Cut It Up!
Sam and Meg have one cake. Can they cut it into equal shares?
1st Grade MathStep 1: Cut in Two
Sam cuts the cake. Each share is the same size.
How many equal shares do you see?
There are 2 equal shares.
Each share is a half.
Two halves make one whole!
Step 2: Cut in Four
Meg cuts her cake into more equal shares.
How many equal shares do you see?
There are 4 equal shares. Each share is a fourth. A fourth is also called a
quarter.
Four fourths make one whole!
Let's Remember
Equal Shares
Halves: 2 equal shares.
Fourths (quarters): 4 equal shares.
The whole is all of the shares.
Fourths (quarters): 4 equal shares.
The whole is all of the shares.
Watch Out!
Shares must be the same size to be equal!
Name the Share
One share is blue. What is the blue share?
The whole has 4 equal shares. One share is a fourth of the whole.
You can also say a
quarter of the whole.
Share the Bun
Two kids share one round bun. Each kid gets one equal share.
What is each share?
The bun has 2 equal shares. Each kid gets a
half of the bun.
What Goes in the Blank?
? fourths = 1 whole
4 fourths = 1 whole. The whole is four of the fourth shares.
Add the Halves
1 half + 1 half = ?
A half and a half make 1 whole. The whole is two of the half shares.
Word Problem
Kit cuts a cake into quarters. Each share is equal.
How many shares did Kit make?
Quarters means fourths. Fourths are 4 equal shares. Kit made 4 shares.
Challenge: Compare!
halves
fourths
The cakes are the same size. Compare the blue shares.
Which blue share is bigger?
More shares make smaller shares! A fourth is smaller than a half.
The half is bigger.
What can you cut into halves at home? What can you cut into fourths?
Great Work!
0/7
correct
equal
half
quarter
compare