Investigating Vibrating Materials - 1st Grade Science

1. Look at the steps. What does this plan test? QUESTION: Can we make sound by making things vibrate? MATERIALS: rubber band, hands STEPS: 1) Hold the rubber band stretched between fingers. 2) Pluck the rubber band with your other hand. 3) Watch the rubber band and listen. OBSERVE: Does the rubber band shake? Do you hear sound? RESULT: The rubber band moves fast and makes a twang.
   Answer: It tests if vibrating makes sound from the rubber band. This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? This plan tests a rubber band. The steps are: hold the rubber band stretched between fingers, pluck it with your other hand, watch and listen. The student should observe if the rubber band shakes and if it makes a twang. The correct answer says "It tests if vibrating makes sound from the rubber band." which correctly identifies the investigation purpose is to test vibration-sound connection. This matches what the investigation plan is designed to show. A distractor like "It tests if fingers are sticky when you pluck." is wrong because it focuses on wrong purpose. Students might choose this if they only focus on one part of investigation, don't understand purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
2. Read the plan: QUESTION: Do vibrating things make sound? MATERIALS: rubber band, hands. STEPS: 1) Stretch rubber band. 2) Pluck it. 3) Watch and listen. OBSERVE: shaking and sound. RESULT: it shakes fast and twangs. What will you see and hear?
   Answer: You will watch the rubber band shake and hear sound This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound, focusing on the investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? This specific investigation tests a rubber band. The steps are: stretch the rubber band, pluck it, then watch and listen. You should observe if the rubber band shakes and if it makes sound. The correct answer says "You will watch the rubber band shake and hear sound" which correctly identifies the expected result is vibration and sound. This matches what the investigation plan is designed to show. A distractor like "You will hear sound, but it will not shake" is wrong because it only mentions sound without vibration, reversing the cause-effect. Students might choose this if they only focus on one part of the investigation, don't understand the purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
3. Read the plan. What should Sofia observe? QUESTION: Do vibrating things make sound? MATERIALS: drum, hand STEPS: 1) Touch the drum top. It is still. 2) Tap the drum. 3) Look at the drum top and listen. OBSERVE: Is it shaking? What sound do you hear? RESULT: The drum top shakes and goes boom.
   Answer: Watch the drum top shake and listen for sound. This question tests understanding of 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically what to observe during investigation. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Sofia's plan tests a drum. The steps are: touch still drum, tap it, then look and listen. Sofia should observe if the drum top shakes and if it makes sound. The correct answer says "Watch the drum top shake and listen for sound" which correctly identifies both things to observe - the drum vibrating (shaking) and the sound it makes. This matches what the investigation plan is designed to show. Wrong answers like "Listen for sound only, and do not watch" are incorrect because they only observe one part - students need to observe BOTH vibration and sound to understand the connection. Students might choose this if they think hearing is enough, or don't understand we need to see vibration to connect it to sound. Before investigation, remind students "We need to use our eyes AND ears." During investigation, guide: "Look at the drum top - what do you see?" and "Listen - what do you hear?" After, connect observations: "The shaking drum top made the boom sound." Practice with multiple instruments so students always observe both vibration and sound together.
4. Read the plan. What is Jamal trying to find out? QUESTION: Can we make sound by making things vibrate? MATERIALS: rubber band, hands STEPS: 1) Hold the rubber band stretched between your fingers. 2) Pluck the rubber band with your other hand. 3) Watch the rubber band and listen. OBSERVE: Does it shake? Do you hear sound? RESULT: The rubber band moves fast and makes a twang sound.
   Answer: If the rubber band shakes and makes a sound. This question tests the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically understanding investigation purpose. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Jamal's plan tests a rubber band stretched between fingers. The steps are: hold rubber band stretched, pluck it, then watch and listen. Jamal should observe if the rubber band shakes and if it makes a twang sound. The correct answer says "If the rubber band shakes and makes a sound" which correctly identifies the investigation purpose is to test if vibration and sound happen together. This matches what the investigation plan is designed to show. Wrong answers like "If the rubber band is the longest in class" are wrong because they focus on irrelevant properties instead of the vibration-sound connection. Students might choose this if they get distracted by object features instead of focusing on the investigation's purpose. Before investigation, ask "What are we trying to find out?" Help students focus on the question: Can vibrating things make sound? After testing, ask "Did it shake? Did it make sound?" Help students see the pattern across different materials.
5. Read the plan. What is Amir trying to find out? QUESTION: Do vibrating things make sound? MATERIALS: ruler, desk STEPS: 1) Put the ruler on the desk edge. 2) Hold it, push down the end, let go. 3) Watch the ruler and listen. OBSERVE: Does it shake? Do you hear sound? RESULT: The ruler moves fast and makes a buzzing sound.
   Answer: If vibrating things can make sound. This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Amir's plan tests a ruler. The steps are: put the ruler on the desk edge, hold it, push down the end, let go, watch and listen. Amir should observe if the ruler shakes and if it makes buzzing. The correct answer says "If vibrating things can make sound." which correctly identifies the investigation purpose is to test vibration-sound connection. This matches what the investigation plan is designed to show. A distractor like "If sound makes the ruler start to shake." is wrong because it reverses cause-effect. Students might choose this if they only focus on one part of investigation, don't understand purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
6. Read the plan. What should Carlos do first? QUESTION: Can we make sound by making things vibrate? MATERIALS: ruler, desk STEPS: 1) Put the ruler on the desk edge. 2) Hold it, push down the end, let go. 3) Watch the ruler and listen. OBSERVE: Does it shake? Do you hear sound? RESULT: The ruler moves fast and makes a buzzing sound.
   Answer: Put the ruler on the desk edge. This question tests the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically following investigation steps. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Carlos's plan tests a ruler on a desk edge. The steps are: put ruler on edge, push down and let go, then watch and listen. Carlos should first put the ruler on the desk edge. The correct answer says "Put the ruler on the desk edge" which correctly identifies the first step in the investigation procedure. This matches what the investigation plan is designed to show. Wrong answers like "Listen for buzzing before you let it go" are wrong because they suggest doing steps out of order - you can't hear buzzing before making the ruler vibrate. Students might choose this if they don't understand that steps must be done in order. Before investigation, read steps together: "First we do this, then this." Practice following steps in order with other activities. Emphasize: "We can't skip ahead - each step prepares for the next one."
7. Read the plan. What will Yuki see and hear? QUESTION: Can we make sound by making things vibrate? MATERIALS: guitar, hand STEPS: 1) Pluck a string. 2) Watch the string and listen. 3) Touch the string to stop it. OBSERVE: How does it move? When does sound stop? RESULT: The string moves and sounds until you stop it.
   Answer: She will see the string shake and hear sound. This question tests understanding of 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically predicting investigation results. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Yuki's plan tests a guitar string. The steps are: pluck string, watch and listen, then touch to stop it. Yuki should observe if the string shakes and if it makes sound. The correct answer says "She will see the string shake and hear sound" which correctly identifies both expected observations - the string vibrating (shaking) and making sound. This matches what the investigation plan is designed to show. Wrong answers like "She will hear sound, but the string will not move" are incorrect because they separate sound from vibration - guitar strings must vibrate to make sound. Students might choose this if they can't see the fast vibrations of a thin string, or think sound happens without movement. Before investigation, have students gently touch a quiet guitar string: "Is it moving? Making sound?" (no to both). After plucking, use slow-motion video or put paper on the string to make vibrations visible. The stopping step is powerful: "When we stop the shaking, what happens to the sound?" This clearly shows vibration and sound are connected.
8. Read the plan. What will Maya see and hear? QUESTION: Do vibrating things make sound? MATERIALS: tuning fork, hand STEPS: 1) Tap the tuning fork gently on a table. 2) Hold it near your ear. 3) Look at the ends and listen. OBSERVE: Are the ends moving? Do you hear sound? RESULT: The ends wiggle fast and the fork hums.
   Answer: The fork ends will wiggle, and you will hear humming. This question tests the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically predicting investigation results. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Maya's plan tests a tuning fork. The steps are: tap fork on table, hold near ear, then look at ends and listen. Maya should observe if the fork ends wiggle and if it hums. The correct answer says "The fork ends will wiggle, and you will hear humming" which correctly identifies both the vibration (wiggling ends) and sound (humming) that will occur. This matches what the investigation plan is designed to show. Wrong answers like "The fork will stay still, but you will hear humming" are wrong because they separate vibration from sound - if there's sound, there must be vibration. Students might choose this if they don't understand that sound always comes from vibration. Before investigation, ask "If it makes sound, what else must be happening?" Help students predict both parts. After testing, point out: "Look! The ends are wiggling AND we hear humming. They happen together!"
9. Look at the steps. What will Keisha hear and see? QUESTION: Do vibrating things make sound? MATERIALS: drum, hand STEPS: 1) Touch the drum top. It is still. 2) Tap the drum. 3) Look at the drum top and listen. OBSERVE: Is it shaking? What sound do you hear? RESULT: The drum top shakes and the drum goes boom.
   Answer: Keisha will see shaking and hear a boom sound. This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Keisha's plan tests a drum. The steps are: touch the drum top (it is still), tap the drum, look at the drum top and listen. Keisha should observe if the drum top shakes and if it makes boom. The correct answer says "Keisha will see shaking and hear a boom sound." which correctly identifies the expected result is vibration and sound. This matches what the investigation plan is designed to show. A distractor like "Keisha will hear boom, but the drum stays still." is wrong because it only mentions sound without vibration. Students might choose this if they only focus on one part of investigation, don't understand purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
10. Read the plan. What will happen when Maya taps? QUESTION: Do vibrating things make sound? MATERIALS: triangle, stick STEPS: 1) Hold the triangle by the string. 2) Tap the triangle with the stick. 3) Watch and listen. OBSERVE: Does the triangle shake? What sound happens? RESULT: The triangle shakes and rings until you grab it.
    Answer: The triangle shakes and rings when Maya taps. This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Maya's plan tests a triangle. The steps are: hold the triangle by the string, tap it with the stick, watch and listen. Maya should observe if the triangle shakes and if it rings. The correct answer says "The triangle shakes and rings when Maya taps." which correctly identifies the expected result is vibration and sound. This matches what the investigation plan is designed to show. A distractor like "The triangle rings, but it does not shake." is wrong because it only mentions sound without vibration. Students might choose this if they only focus on one part of investigation, don't understand purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
11. Read the plan. What should Yuki watch and listen for? QUESTION: Can we make sound by making things vibrate? MATERIALS: rubber band, hands STEPS: 1) Hold the rubber band stretched. 2) Pluck it with your other hand. 3) Watch and listen. OBSERVE: Does it shake? Do you hear sound? RESULT: The rubber band shakes fast and twangs.
    Answer: Watch the rubber band shake and listen for twang. This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Yuki's plan tests a rubber band. The steps are: hold the rubber band stretched, pluck it with your other hand, watch and listen. Yuki should observe if the rubber band shakes and if it twangs. The correct answer says "Watch the rubber band shake and listen for twang." which correctly identifies what to observe is both shaking and sound. This matches what the investigation plan is designed to show. A distractor like "Listen for twang, but do not watch shaking." is wrong because it only mentions sound without vibration. Students might choose this if they only focus on one part of investigation, don't understand purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
12. Read the plan. What does this plan test? QUESTION: Can we make sound by making things vibrate? MATERIALS: rubber band, hands STEPS: 1) Hold a rubber band stretched between fingers. 2) Pluck the rubber band. 3) Watch it and listen. OBSERVE: Does it shake? Do you hear sound? RESULT: The rubber band moves fast and twangs.
    Answer: It tests if vibrating makes sound from the rubber band. This question tests understanding of 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically identifying investigation purpose. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? This plan tests a rubber band stretched between fingers. The steps are: hold rubber band stretched, pluck it, then watch and listen. The student should observe if the rubber band vibrates and if it makes sound. The correct answer says "It tests if vibrating makes sound from the rubber band" which correctly identifies the investigation purpose is to test the vibration-sound connection. This matches what the investigation plan is designed to show. Wrong answers like "It tests if a rubber band can stretch far" are incorrect because they focus on the wrong property - stretching instead of vibrating and making sound. Students might choose this if they get distracted by the setup steps rather than understanding the main purpose of connecting vibration to sound. Before investigation, ask "What are we trying to find out?" Point to the question in the plan. After, ask "What did the rubber band do?" (vibrated) and "What happened when it vibrated?" (made sound). Connect the two: "The vibrating rubber band made a twang sound." Do multiple examples so students see pattern: all vibrating things make sound. Help students focus on the investigation question, not just the materials or setup.
13. Read the plan. How can Maya test if vibrating makes sound? QUESTION: Can we make sound by making things vibrate? MATERIALS: rubber band, hands STEPS: 1) Hold the rubber band stretched tight. 2) Pluck it with your other hand. 3) Watch it and listen. OBSERVE: Does it shake? Do you hear sound? RESULT: It shakes fast and makes a twang.
    Answer: Pluck it, then watch it shake and hear sound. This question tests understanding of 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically how to conduct the investigation. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Maya's plan tests a rubber band. The steps are: hold it stretched tight, pluck it, then watch and listen. Maya should observe if the rubber band shakes and if it makes sound. The correct answer says "Pluck it, then watch it shake and hear sound" which correctly describes the action (pluck) and both observations (see shaking, hear sound). This matches what the investigation plan is designed to show. Wrong answers like "Hold it still and wait for a sound" are incorrect because they don't include the action that causes vibration - nothing will happen if you just hold the rubber band still. Students might choose this if they don't understand that we need to DO something to make vibration happen, or think objects make sound on their own. Before investigation, demonstrate: "If I just hold this rubber band, does it make sound?" (no). "What do I need to do?" (pluck it). During investigation, emphasize the sequence: action (pluck) → vibration (shake) → sound (twang). Have students predict before each step to build understanding of cause and effect.
14. Read the plan: QUESTION: Do vibrating things make sound? MATERIALS: triangle, stick. STEPS: 1) Hold triangle by string. 2) Tap it. 3) Grab it to stop. OBSERVE: shaking and sound. RESULT: ringing stops when grabbed. What should you observe?
    Answer: Watch the triangle shake and listen for ringing This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound, focusing on the investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? This specific investigation tests a triangle. The steps are: hold triangle by string, tap it, grab it to stop, then observe. You should observe if the triangle shakes and if it makes sound. The correct answer says "Watch the triangle shake and listen for ringing" which correctly identifies what to observe is both shaking and sound. This matches what the investigation plan is designed to show. A distractor like "Listen for ringing only, do not watch" is wrong because it only mentions sound without vibration. Students might choose this if they only focus on one part of the investigation, don't understand the purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
15. Read the plan. What will Chen see and hear? QUESTION: Do vibrating things make sound? MATERIALS: ruler, desk STEPS: 1) Put the ruler on the desk edge. 2) Hold it, push down the end, let go. 3) Watch the ruler and listen. OBSERVE: Does it shake? Do you hear sound? RESULT: The ruler moves fast and makes a buzzing sound.
    Answer: The ruler will shake, and you will hear buzzing. This question tests the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically understanding investigation results. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Chen's plan tests a ruler on a desk edge. The steps are: put ruler on edge, push down and let go, then watch and listen. Chen should observe if the ruler shakes and if it makes a buzzing sound. The correct answer says "The ruler will shake, and you will hear buzzing" which correctly identifies both the vibration (shaking) and the sound (buzzing) that the investigation shows. This matches what the investigation plan is designed to show. Wrong answers like "You will only listen for sound, not watch shaking" are wrong because they only focus on one observation instead of both vibration and sound. Students might choose this if they don't understand we need to observe both shaking AND sound to connect them. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound.
16. Read the plan. What should Jamal observe? QUESTION: Do vibrating things make sound? MATERIALS: drum, hand STEPS: 1) Touch the drum top. It is still. 2) Tap the drum. 3) Look at the drum top and listen. OBSERVE: Is the drum top shaking? What sound do you hear? RESULT: The drum top shakes and the drum goes boom.
    Answer: Watch the drum top shake and listen for boom. This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Jamal's plan tests a drum. The steps are: touch the drum top (it is still), tap the drum, look at the drum top and listen. Jamal should observe if the drum top shakes and if it makes boom. The correct answer says "Watch the drum top shake and listen for boom." which correctly identifies what to observe is both shaking and sound. This matches what the investigation plan is designed to show. A distractor like "Only listen for boom, do not watch." is wrong because it only mentions sound without vibration. Students might choose this if they only focus on one part of investigation, don't understand purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
17. Read the plan: QUESTION: Do vibrating things make sound? MATERIALS: ruler, desk. STEPS: 1) Put ruler on edge. 2) Hold it down. 3) Push end and let go. 4) Watch and listen. OBSERVE: vibration and sound. RESULT: buzzing. What should you do first?
    Answer: Put the ruler on the desk edge This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound, focusing on the investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? This specific investigation tests a ruler on a desk. The steps are: put ruler on edge, hold it down, push end and let go, then watch and listen. You should observe if the ruler vibrates and if it makes sound. The correct answer says "Put the ruler on the desk edge" which correctly identifies the first step in the procedure. This matches what the investigation plan is designed to show. A distractor like "Let go of the ruler before holding it" is wrong because it describes wrong steps. Students might choose this if they only focus on one part of the investigation, don't understand the purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.
18. Read the plan. What should Marcus observe? QUESTION: Do vibrating things make sound? MATERIALS: ruler, desk STEPS: 1) Put the ruler on the desk edge. 2) Hold it down, push the end, let go. 3) Watch and listen. OBSERVE: What does it do? What do you hear? RESULT: The ruler moves up and down and buzzes.
    Answer: He should watch the ruler vibrate and listen for sound. This question tests understanding of 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically what to observe during investigation. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? Marcus's plan tests a ruler on a desk edge. The steps are: place ruler on edge, push down and release, then watch and listen. Marcus should observe if the ruler vibrates and if it makes sound. The correct answer says "He should watch the ruler vibrate and listen for sound" which correctly identifies both observations needed - seeing the ruler vibrate and hearing the sound it makes. This matches what the investigation plan is designed to show. Wrong answers like "He should watch the desk vibrate and ignore the ruler" are incorrect because they focus on the wrong object - the desk is just holding the ruler, the ruler is what vibrates and makes sound. Students might choose this if they get confused about which object is being tested, or think the supporting object (desk) is important. Before investigation, clarify: "What are we testing - the ruler or the desk?" Point to the ruler: "This is what will vibrate." During investigation, guide attention: "Keep your eyes on the ruler, not the desk." After, discuss: "Which object moved and made sound?" (ruler, not desk).
19. Read the plan. What does this plan test? QUESTION: Can we make sound by making things vibrate? MATERIALS: triangle, stick STEPS: 1) Hold the triangle by the string. 2) Tap the triangle with the stick. 3) Watch and listen. OBSERVE: Does it shake? What sound happens? RESULT: The triangle shakes and rings until you grab it.
    Answer: If a vibrating triangle makes a ringing sound. This question tests the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound - specifically understanding what the plan tests. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? This plan tests a triangle instrument. The steps are: hold triangle by string, tap with stick, then watch and listen. The student should observe if the triangle shakes and if it rings. The correct answer says "If a vibrating triangle makes a ringing sound" which correctly identifies the investigation tests the connection between vibration and sound. This matches what the investigation plan is designed to show. Wrong answers like "If the triangle is heavy or light to hold" are wrong because they focus on unrelated properties instead of the vibration-sound relationship being tested. Students might choose this if they get distracted by other features of objects instead of focusing on the investigation purpose. Before investigation, review the question: "What are we trying to find out?" Keep students focused on vibration and sound, not other properties. After testing, summarize: "The triangle vibrated and made sound, just like our question asked!"
20. Read the plan: QUESTION: Can we make sound by making things vibrate? MATERIALS: ruler, desk. STEPS: 1) Put ruler on edge. 2) Push down and let go. 3) Watch and listen. OBSERVE: vibration and sound. RESULT: buzzing sound. What does this plan test?
    Answer: It tests if vibrating things make sound This question aligns with the skill 1-PS4-1: Plan and conduct investigations to provide evidence that vibrating materials can make sound, focusing on the investigation planning part. An investigation is a test to find out something. In this investigation, students test if vibrating (shaking) materials make sound. A good investigation plan has: question, materials, steps, and what to observe. Students should observe two things: does the object vibrate (shake/move)? Does it make sound? This specific investigation tests a ruler on a desk. The steps are: put the ruler on the edge, push down and let go, then watch and listen. You should observe if the ruler vibrates and if it makes sound. The correct answer says "It tests if vibrating things make sound" which correctly identifies the investigation purpose is to test vibration-sound connection. This matches what the investigation plan is designed to show. A distractor like "It tests if sound makes the ruler shake" is wrong because it reverses cause-effect. Students might choose this if they don't understand the purpose is to connect vibration to sound, think touching alone makes sound without vibration. Before investigation, ask "What do you think will happen?" After, ask "What did you see?" (vibration) and "What did you hear?" (sound). Connect the two: "When it shook, we heard sound." Do multiple examples (drum, rubber band, ruler) so students see pattern: vibration always makes sound. Help students focus on cause-effect: action (tap) → vibration (shake) → sound (hear). Watch for: students who only attend to one sense (just watching OR just listening) without connecting both observations.

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