Skip to lesson

Math · Kindergarten Math

Chapter 1: Counting to Twenty

Counting to Ten Again

Warming up the numbers you know.

Lesson
1
Time
About 12 minutes
Practice sheets
0 of 16 done
Part 1 of 7Let's Learn

Step 1: Let's Learn

Read it, or press Listen and follow the words.

Watch the idea first — 52 seconds. Then read on, and try it yourself in the next step.

The counting words always come in the same order. One to ten, every time, for everything.

Count with me

Touch each apple as you count. One. Two. Three. Four. Five. Six. Seven. Eight. Nine. Ten. Now count them again, starting from the other end. Still ten. The order of the words never changed.

Why the order can never change

If the words came in a different order each time, the last one would change too. Then it could not tell you how many.

Step 2: Try It Yourself

Tap to add. Count out loud each time.

Tap to add an apple. Say the number each time.

How many in all7

Ten boxes, ten counters. Fill them and count.

How many10

That is a full ten!

Step 3: In Real Life

Hide and seek

You cover your eyes. You count to ten. One, two, three, all the way to ten. Then you shout: ready or not!

Step 4: Watch an Example

One step at a time.

Watch Mia Count Seven Apples

Mia has seven apples in a row.

  1. Step 1

    She touches the first apple and says one.

    Apples7

Watch Leo Count the Stars

Leo has a row of stars. Leo starts. You finish.

  1. Step 1

    Leo touches the first star and says one.

Step 5: Your Turn

Practice makes it stick.

The Fruit Bowl

Problem 1 of 13

Six oranges in the bowl. How many oranges?

The Pencil Cup

Problem 2 of 13

Leo counts his pencils. The last number he says is 9. How many pencils?

Count Them All

Touch each one. Say one number each time.

Problem 3 of 13

How many?

Problem 4 of 13

How many?

Problem 5 of 13

What comes after nine?

Problem 6 of 13

You counted to eight. How many are there?

Find the Mistake

A friend counted. Can you spot the slip?

Problem 7 of 13

Sam counts these stars. He says 9. What did Sam do?

Problem 8 of 13

How many stars are there?

Problem 9 of 13

Ana counts these fish. She says 4. What did Ana do?

Problem 10 of 13

How many fish are there?

Which Way?

Pick the way that works.

Problem 11 of 13

Mia counted her blocks to 7. Which way is quick?

Problem 12 of 13

Ten balls. Which way helps you count them right?

Make Ten

Fill the boxes.

Problem 13 of 13

Fill all ten boxes.

Tap the boxes.

How many0

Step 6: Quick Check

Show what you know.

Question 1 of 1

How many?

Ready for more?Optional. Past the lesson, for anyone who wants it.

Stretch 1 of 1

Ana counts these stars. Now she starts at the other end. What number does she end on?

What You Learned

  • Numbers always come in the same order.
  • One number for each object.
  • The last number is how many.
For the grown-up

Every object gets exactly one number, and every number gets exactly one object. Nothing counted twice, nothing skipped.

Counting one thing twice makes your answer too big. Missing one makes it too small. Both happen when your finger and your voice get out of step.

The last number you say tells you how many there are. You do not count again to find out — the counting already answered it.

Seven is not the name of the last object. Seven is how big the whole set is.