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 🎁
2
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.
3
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.
4 more steps in this tutorial
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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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