- Read the passage.
A desert kangaroo rat came out at night. The sand still held some warmth. During the day, the sun made the ground too hot. The kangaroo rat stayed in a cool burrow then. At night it searched for seeds and small plants. It packed seeds into its cheek pouches. Later, it carried them back to store for dry times. The kangaroo rat rarely drank water. Instead, it got moisture from the food it ate. Its body also saved water in another way. It made very little urine, so it did not waste liquid. When an owl swooped down, the kangaroo rat leaped in a quick zigzag. This sudden movement made it harder to catch. By being active at night and saving water, the animal lived well in a harsh desert.
What is the central theme of the passage?
Answer: Kangaroo rats used special habits to survive in the desert.
This question tests ISEE Lower Level reading comprehension skills, specifically identifying the main idea. The main idea is the central point or theme that the author wants to convey, supported by key details. In this passage, details like nocturnal activity, staying in cool burrows during the day, storing seeds, getting moisture from food, and making quick escape movements all support the main point that kangaroo rats use special habits to survive in the desert. Choice B is correct because it encapsulates the passage's main idea, accurately reflecting how multiple adaptations work together for desert survival. Choice D is incorrect because it focuses on a trivial detail (taste of seeds) that isn't even mentioned in the passage, demonstrating how students might be distracted by imaginative but irrelevant options. To help students: Teach them to identify multiple supporting details that connect to a central survival theme. Encourage them to recognize patterns of adaptation across different behaviors described in the passage.
- Which statement best expresses the main idea of the passage?
Answer: Therapy dogs are trained to improve people's well-being through comfort and companionship.
When you encounter a main idea question, you need to identify what the entire passage is primarily about, not just focus on specific details or examples mentioned along the way.
This passage introduces therapy dogs and explains their overall purpose: providing comfort and support to improve people's well-being. The author describes where they work (hospitals, schools, nursing homes), clarifies how they differ from service dogs, and gives several examples of their benefits (lowering blood pressure, reducing anxiety, helping children gain reading confidence). All of these details support the central concept that therapy dogs help people feel better through companionship.
Answer D captures this main idea perfectly by stating that therapy dogs are "trained to improve people's well-being through comfort and companionship." This encompasses the passage's primary focus.
Answer A is incorrect because it focuses only on the comparison between therapy dogs and service dogs, which is just one supporting detail, not the main point. Answer B is wrong because it zeroes in on just the reading example with children—again, this is only one specific benefit mentioned, not the overall main idea. Answer C makes the same mistake by highlighting only the blood pressure benefit, treating one detail as if it were the central message.
For main idea questions on the ISEE, always step back and ask yourself: "What is this passage really trying to teach me overall?" Avoid answers that focus on single examples or details, even if those details are mentioned prominently in the text.
- What is the main idea of this passage?
Answer: Desert animals have evolved a variety of physical adaptations to cope with heat and lack of water.
The correct answer is B because it accurately summarizes the central theme of the passage, which is that different desert animals have developed various physical traits to survive the environment. Choice A is too narrow, as it only mentions one example from the passage. Choice C is incorrect because the passage explicitly states these adaptations are not choices. Choice D is also too narrow and makes a claim of importance that the passage does not support.
- What is the main purpose of the passage?
Answer: To explain what the braille system is, how it works, and who invented it.
The correct answer is B because the passage provides a concise overview of the braille system: its definition, its inventor, and its basic function. Choice A is too broad, as the passage only discusses Louis Braille in relation to this one invention. Choice C is a supporting detail about the system's origin. Choice D makes a claim about the importance of braille that is not stated in the passage.
- What is the best summary of this passage?
Answer: The passage defines a food chain and uses an example to explain how energy flows through it.
When you encounter a summary question, you need to identify the choice that captures the passage's main purpose and overall structure, not just a supporting detail.
This passage has a clear organization: it defines what a food chain is, explains that it starts with producers and moves through consumers, provides a concrete example (grass → grasshopper → frog → snake), and concludes by mentioning food webs. The author's main goal is to teach you about food chains by combining definition with illustration.
Choice A correctly captures this structure. The passage does indeed define a food chain in the opening sentences, then uses the grass-to-snake example to demonstrate how energy flows through each link. This choice reflects both the definitional content and the explanatory example.
Choice B only focuses on the first part of the passage about producers and plants. While this information is accurate, it ignores the example and the broader explanation about energy transfer, making it too narrow for a complete summary.
Choice C emphasizes the final sentence about food webs being more complex, but this is just a brief concluding point. The passage primarily focuses on explaining simple food chains, not comparing them to food webs.
Choice D incorrectly identifies consumers as "most important." The passage presents all parts of the food chain as necessary components without ranking their importance, and actually emphasizes that chains must start with producers.
For summary questions, look for the choice that reflects the passage's main teaching goal and overall flow, rather than getting distracted by accurate but incomplete details.
- The passage is mainly about...
Answer: the process of creating a mosaic and its long-lasting nature.
When you see a "main idea" question asking what a passage is "mainly about," you need to identify the central theme that connects all the key points discussed throughout the text.
This passage covers three main elements about jazz: where it came from (African American communities in New Orleans in the late 19th/early 20th centuries), what makes it special (improvisation, strong rhythm, call-and-response patterns, blend of blues and ragtime), and how it spread (throughout the country and world, influencing other music styles). Answer choice A captures all these elements perfectly by mentioning "origins, key characteristics, and influence of jazz music."
Let's see why the other choices miss the mark. Choice B focuses only on improvisation, which is just one characteristic mentioned in the passage, not the main topic. Choice C narrows the focus to New Orleans itself rather than jazz music—while New Orleans is important to the story, it's not what the passage is mainly about. Choice D suggests the passage compares different musical styles, but it only briefly mentions that jazz blends blues and ragtime traditions; it doesn't actually explain the differences between these genres.
For main idea questions, avoid answers that focus on just one detail from the passage, even if that detail is mentioned prominently. Instead, look for the choice that acts like an umbrella, covering all the major points discussed. The correct main idea should make you think, "Yes, that's what the whole passage was trying to tell me."
- Read the passage.
A meerkat lived with its group on a dry plain. Each morning, the group left its burrow to search for food. One meerkat climbed a rock and stood very still. It looked in every direction and listened closely. This meerkat acted as a guard while others dug for insects. When a hawk circled above, the guard gave a sharp bark. The group rushed back to the burrow at once. After the danger passed, the guard climbed down. Another meerkat took its place on the rock. The guards switched jobs many times each day. That way, no one got too tired or hungry. The group stayed safer because someone always watched. Even young meerkats learned to look up and listen. Over time, the group became faster at hiding. This simple habit helped the meerkats survive in a place with many predators.
What is the main idea of the passage?
Answer: Meerkats took turns guarding to warn the group of danger.
This question tests ISEE Lower Level reading comprehension skills, specifically identifying the main idea. The main idea is the central point or theme that the author wants to convey, supported by key details. In this passage, details like meerkats taking turns as guards, warning calls when danger appears, and the group rushing to safety all support the main point that meerkats use a guard system to protect their group. Choice B is correct because it encapsulates the passage's main idea, accurately reflecting how meerkats take turns guarding to warn the group of danger. Choice A is incorrect because it focuses on a single detail (eating insects) rather than the main idea, a common mistake when students misinterpret supporting information as the central theme. To help students: Teach them to look for repeated ideas and topic sentences that indicate the main idea. Encourage summarizing passages in one sentence to capture the essence, and watch for confusing details with the main point or focusing on interesting but non-central information.
- Which of the following best summarizes the passage?
Answer: Photosynthesis is a process where plants use sunlight, water, and carbon dioxide to create their own food.
The correct answer is B because it provides a complete and concise summary of the entire process described in the passage, mentioning the inputs (sunlight, water, carbon dioxide) and the outcome (food for the plant). Choices A and C are too narrow, focusing on only one aspect of the process (the byproduct or one ingredient). Choice D misinterprets the function of chloroplasts; they are where photosynthesis happens, not where food is stored.
- The passage is primarily about...
Answer: the traditional, hand-drawn method of creating animated films.
When you encounter a question asking what a passage is "primarily about," you're looking for the main idea that runs throughout the entire text, not just supporting details or examples mentioned along the way.
This passage focuses on explaining how traditional animation worked before modern computer techniques. The author walks you through the entire cel animation process: artists drawing each frame by hand, creating hundreds of thousands of individual drawings with slight differences, painting them onto clear sheets called cels, photographing them over backgrounds, and playing them back to create the illusion of movement. The Disney example serves to illustrate just how labor-intensive this process was, but it's not the main focus.
Answer choice D correctly identifies this main theme about hand-drawn animation methods. Choice A is wrong because while Disney and Snow White are mentioned, the passage doesn't discuss Disney's history or other famous films—it uses this single movie only as an example of the workload involved. Choice B is incorrect because the passage doesn't describe different animation jobs or career paths; it focuses on the technical process itself. Choice C misses the mark because the passage doesn't argue that Snow White is important—it simply uses it to demonstrate how many drawings were needed for a full-length animated film.
Remember that main idea questions test whether you can distinguish between the central topic and supporting examples. Look for what the author spends most of their time explaining, not just what gets mentioned as evidence or illustration.
- Which statement best describes the main topic of the passage?
Answer: The passage describes the complete life cycle and migratory journey of the monarch butterfly.
The correct answer is A because the passage covers all the stages of the monarch's life, from egg to caterpillar to chrysalis to adult, and also includes its famous migration. Choice B is too narrow, focusing on just one stage. Choice C is a specific detail about the caterpillar's diet. Choice D is too broad, as the passage is exclusively about the monarch butterfly, not other insects.
- What is the main idea of the passage?
Answer: Recycling is a beneficial process that conserves resources and reduces pollution.
When you encounter a main idea question, you need to identify the central point that the entire passage supports, not just a specific detail or example mentioned within it.
The correct answer is A because it captures the passage's overarching message. The text presents recycling as a process with multiple environmental benefits: it conserves natural resources by reducing the need for raw material extraction, saves energy (as shown in the aluminum example), and reduces pollution by decreasing landfill waste. Answer A encompasses all these key points in one comprehensive statement.
Now let's examine why the other choices fall short. Answer B focuses only on the sorting aspect mentioned in the final sentence, which is actually a call to action rather than the main idea. Answer C zeroes in on the specific aluminum can statistic, but this is just one supporting example used to illustrate the broader point about energy conservation. Answer D suggests that preventing overfull landfills is recycling's main purpose, but the passage presents landfill reduction as just one of several benefits, not the primary goal.
The key difference between a main idea and supporting details is scope. Supporting details like the 95% energy savings or trash sorting are specific pieces of evidence, while the main idea is the umbrella concept they all support.
For main idea questions on the ISEE, look for the answer choice that could serve as a title for the entire passage. Ask yourself: "What is this whole passage really about?" The broadest accurate statement that covers all the key points will be your main idea.
- Read the passage.
A prairie dog lived in a wide grassland. It did not live alone. Many prairie dogs shared a town of burrows. Each burrow had tunnels and rooms underground. The tunnels gave shade in summer and warmth in winter. They also gave quick hiding places. Prairie dogs took turns standing upright near the burrow openings. From that high view, they watched for danger. If a coyote appeared, a prairie dog gave a loud call. The sound warned the whole town. In a flash, many animals disappeared underground. The town stayed quiet until the predator left. Prairie dogs also used their burrows to raise babies. The young learned where to run when they heard alarm calls. Living together and warning each other helped the group survive. In open grassland, teamwork made a big difference.
What is the main idea of the passage?
Answer: Prairie dogs used burrows and warning calls to stay safe together.
This question tests ISEE Lower Level reading comprehension skills, specifically identifying the main idea. The main idea is the central point or theme that the author wants to convey, supported by key details. In this passage, details like shared burrow towns, taking turns as sentries, loud warning calls alerting the whole town, and young learning the system all support the main point that prairie dogs use burrows and warning calls to stay safe together. Choice A is correct because it encapsulates the passage's main idea, accurately reflecting both the physical protection (burrows) and the communication system (warning calls) that enable group survival. Choice B is incorrect because it focuses on a dietary detail not emphasized in the passage and uses absolute language ("only"), demonstrating how students might invent details or focus on minor points rather than the main survival strategy. To help students: Teach them to identify complementary survival strategies (physical structures AND behaviors). Encourage recognition of how community cooperation enhances individual safety.
- What is the main purpose of this passage?
Answer: To define weather and climate and explain the key differences between them.
The correct answer is C because the entire passage is structured to define the two terms, weather and climate, and then highlight the main distinction between them (short-term vs. long-term). Choice A is incorrect; the passage does not discuss weather prediction. Choice B is too narrow, as the desert climate is just one example used for illustration. Choice D makes a judgment of importance that is not present in the passage.
- Which statement best summarizes the passage?
Answer: The passage describes the Statue of Liberty's origin as a gift and the process of its construction and assembly.
When you encounter a question asking you to summarize a passage, you need to identify the main ideas and overall scope of what the author discusses, not just focus on individual details.
Looking at this passage, the author covers two main elements: the Statue of Liberty's background as a French gift to America, and the detailed process of how it was created and transported. The correct answer is D because it captures both of these central themes - the statue's origin story and the construction/assembly process that brought it to New York Harbor.
Let's examine why the other choices miss the mark. Choice A focuses only on the connection between Bartholdi and Eiffel, which is mentioned but isn't the passage's main point. The passage actually clarifies that Bartholdi was the designer while Eiffel worked on the internal structure. Choice B emphasizes the friendship symbolism, but while the passage mentions the statue represents "freedom and democracy," it doesn't elaborate on US-France relations as its primary focus. Choice C suggests that shipping was the most difficult part, but the passage never makes this claim - it simply describes the shipping as one step in the overall process.
The key to summary questions is distinguishing between supporting details and main ideas. Individual facts like "350 pieces" or "Gustave Eiffel" are interesting details, but they support the broader story rather than define it.
Study tip: For summary questions, ask yourself "What would I tell someone if I had to explain this entire passage in one sentence?" The answer that covers the most ground while staying accurate is usually correct.
- The passage is mainly about...
Answer: the origins, key characteristics, and influence of jazz music.
When you see a "main idea" question asking what a passage is "mainly about," you need to identify the central theme that connects all the key points discussed throughout the text.
This passage covers three main elements about jazz: where it came from (African American communities in New Orleans in the late 19th/early 20th centuries), what makes it special (improvisation, strong rhythm, call-and-response patterns, blend of blues and ragtime), and how it spread (throughout the country and world, influencing other music styles). Answer choice A captures all these elements perfectly by mentioning "origins, key characteristics, and influence of jazz music."
Let's see why the other choices miss the mark. Choice B focuses only on improvisation, which is just one characteristic mentioned in the passage, not the main topic. Choice C narrows the focus to New Orleans itself rather than jazz music—while New Orleans is important to the story, it's not what the passage is mainly about. Choice D suggests the passage compares different musical styles, but it only briefly mentions that jazz blends blues and ragtime traditions; it doesn't actually explain the differences between these genres.
For main idea questions, avoid answers that focus on just one detail from the passage, even if that detail is mentioned prominently. Instead, look for the choice that acts like an umbrella, covering all the major points discussed. The correct main idea should make you think, "Yes, that's what the whole passage was trying to tell me."
- What is the primary subject of the passage?
Answer: The story of the first successful human flight in a hot air balloon.
The correct answer is C because the passage focuses on the specific event of the first passenger hot air balloon flight, who invented it, and its significance. Choice A is a supporting detail that explains the science behind the flight. Choice B is too broad; the passage only mentions the airplane as a later development inspired by this event. Choice D is also too broad, as the passage only discusses the brothers in the context of this one invention.
- Which statement best expresses the main idea of the passage?
Answer: The passage explains the scientific process that causes a geyser to erupt.
When you encounter a main idea question, you need to identify what the entire passage is primarily about, not just focus on specific details or examples mentioned along the way.
This passage introduces therapy dogs and explains their overall purpose: providing comfort and support to improve people's well-being. The author describes where they work (hospitals, schools, nursing homes), clarifies how they differ from service dogs, and gives several examples of their benefits (lowering blood pressure, reducing anxiety, helping children gain reading confidence). All of these details support the central concept that therapy dogs help people feel better through companionship.
Answer D captures this main idea perfectly by stating that therapy dogs are "trained to improve people's well-being through comfort and companionship." This encompasses the passage's primary focus.
Answer A is incorrect because it focuses only on the comparison between therapy dogs and service dogs, which is just one supporting detail, not the main point. Answer B is wrong because it zeroes in on just the reading example with children—again, this is only one specific benefit mentioned, not the overall main idea. Answer C makes the same mistake by highlighting only the blood pressure benefit, treating one detail as if it were the central message.
For main idea questions on the ISEE, always step back and ask yourself: "What is this passage really trying to teach me overall?" Avoid answers that focus on single examples or details, even if those details are mentioned prominently in the text.
- Read the passage.
A sea turtle swam thousands of miles across the ocean. After many years, it returned to the same beach. This beach was where it hatched as a baby. At night, the turtle crawled onto the sand. It moved slowly because its flippers worked best in water. The turtle dug a deep hole with its back flippers. Then it laid many eggs inside. When the nest was full, it covered the eggs with sand. The turtle also tossed extra sand around the area. This made the nest harder for predators to find. After that, the turtle returned to the sea. Weeks later, the eggs hatched. Tiny turtles broke out of their shells and raced to the water. Many dangers waited, but some survived. By nesting on the same beach, sea turtles gave their young a chance to begin life.
Which sentence best summarizes the passage?
Answer: Sea turtles returned to their birth beach to lay and hide eggs.
This question tests ISEE Lower Level reading comprehension skills, specifically identifying the main idea. The main idea is the central point or theme that the author wants to convey, supported by key details. In this passage, details like turtles swimming thousands of miles to return, digging holes for eggs, covering nests with extra sand to hide them, and baby turtles racing to water all support the main point that sea turtles return to their birth beach to lay and hide eggs. Choice A is correct because it encapsulates the passage's main idea, accurately reflecting both the remarkable return journey and the protective nesting behavior. Choice C is incorrect because it makes an absolute statement ("all" and "every time") that contradicts the passage's mention of dangers and only some surviving, a common mistake when students oversimplify or misremember details. To help students: Teach them to identify the complete cycle described (journey, nesting, protection). Encourage careful attention to qualifying words like "some" versus "all" that affect meaning.
- The passage is primarily about...
Answer: a brief overview of the Pony Express, including its purpose, function, and why it ended.
When you encounter a question asking what a passage is "primarily about," you're looking for the main idea that runs throughout the entire text, not just supporting details or examples mentioned along the way.
This passage focuses on explaining how traditional animation worked before modern computer techniques. The author walks you through the entire cel animation process: artists drawing each frame by hand, creating hundreds of thousands of individual drawings with slight differences, painting them onto clear sheets called cels, photographing them over backgrounds, and playing them back to create the illusion of movement. The Disney example serves to illustrate just how labor-intensive this process was, but it's not the main focus.
Answer choice D correctly identifies this main theme about hand-drawn animation methods. Choice A is wrong because while Disney and Snow White are mentioned, the passage doesn't discuss Disney's history or other famous films—it uses this single movie only as an example of the workload involved. Choice B is incorrect because the passage doesn't describe different animation jobs or career paths; it focuses on the technical process itself. Choice C misses the mark because the passage doesn't argue that Snow White is important—it simply uses it to demonstrate how many drawings were needed for a full-length animated film.
Remember that main idea questions test whether you can distinguish between the central topic and supporting examples. Look for what the author spends most of their time explaining, not just what gets mentioned as evidence or illustration.
- What is the main point the author is making about libraries?
Answer: Libraries have evolved from being just book warehouses into dynamic community hubs.
The correct answer is C because the passage's central theme is the evolution of libraries from quiet book repositories to active community centers with diverse resources and activities. Choice A is incorrect; the passage states libraries still have plenty of books. Choice B is a supporting detail, highlighting one of the many new services offered. Choice D is also a supporting detail, an example of the types of events libraries host.
