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Math · Pre-K Math

Chapter 4: Sorting and Matching

Sorting by Shape and Size

More ways to make groups.

Lesson
2
Time
About 6 minutes
0 of 5 done

Step 1: Let's Learn

Read it, or press Listen and follow the words.

You can sort by shape. All the circles here, all the squares there.

Or by size

Big ones in one pile, small ones in another. Size works as a rule just as well as colour.

The same things, sorted differently

One pile of toys can be sorted by colour, then swept up and sorted again by shape. Different piles, same toys.

Why that matters

It means the piles come from your rule, not from the toys. You decided what counts as going together.

Sorting two ways at once is hard

Big red ones, small red ones, big blue ones, small blue ones. That is four piles from two rules. Start with one rule.

Step 2: Try It Yourself

Tap and try it out.

Count the sides. That is one way to sort shapes.

Hexagon

Straight sides

6

Corners

6

A hexagon has 6 straight sides.

Turning it does not change what it is.

Step 3: Watch an Example

One step at a time.

Watch Bo Sort Two Ways

Bo has big red blocks and small red blocks.

  1. Step 1

    First he sorts by colour, but they are all red.

Step 4: Your Turn

Practice makes it stick.

Big and Small

Problem 1 of 1

Two big balls and four small. How many small?

Different Ways to Sort

1 of 3

Can you sort by shape?

2 of 3

Three big and two small. How many big?

3 of 3

How many sides does a hexagon have?

Step 5: Quick Check

Show what you know.

Question 1 of 1

Five small cars and one big. How many small?

What You Learned

  • You can sort by colour, shape, or size.
  • The same things can be sorted many ways.