Mathematics Kindergarten 10 min

Big and small

Compare sizes of objects

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1

Introduction & Learning Objectives

Learning Objectives Identify the 'big' object in a pair. Identify the 'small' object in a pair. Sort objects into two groups: big and small. Use the words 'bigger' and 'smaller' to compare two objects. Point to the biggest object in a group of three. Point to the smallest object in a group of three. Look at an elephant 🐘 and a mouse 🐁. Which one is big? Today, we will learn about size! We will find big things and small things. It helps us understand our world. Real-World Applications Picking a big apple to eat 🍎 Finding a small toy to fit in your pocket 🧸 Putting on big shoes for Dad or small shoes for you 👟 Choosing a big box for a big present 🎁
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Key Concepts & Vocabulary

TermDefinitionExample BigSomething that takes up a lot of space.A big bus 🚌 is big. SmallSomething that takes up a little space.A small ladybug 🐞 is small. SizeHow big or small something is.The size of the sun ☀️ is very big. CompareTo look at two things and see how they are different.Let's compare a grape 🍇 and a watermelon 🍉. BiggerWhen you compare two things, this is the one that is more big.A dog 🐕 is bigger than a cat 🐈. SmallerWhen you compare two things, this is the one that is more small.A bee 🐝 is smaller than a bird 🐦. Same SizeWhen two things are not big or small compared to each other.Two matching blocks 🟥 🟥 are the same size.
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Core Formulas

The 'Bigger Than' Rule Big Object > Small Object The open mouth eats the bigger thing! We use this to show one thing is bigger. The 'Smaller Than' Rule Small Object < Big Object The small point is next to the smaller thing. We use this to show one thing is smaller.

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Sample Practice Questions

Challenging
You have a small cup ☕. Which can you fill it with?
A.big watermelon 🍉
B.few small blueberries
C.whole swimming pool
D.large pumpkin
Challenging
A long string is coiled into a small ball. A short string is laid out straight. Which string is really longer?
A.The coiled string
B.The straight string
C.They are the same length
D.You can't tell
Challenging
If a giant's shoe is big, what is a fairy's shoe like?
A.Big
B.Long
C.Heavy
D.Tiny

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