Counting objects and writing numbers to 20 (kindergarten) · lesson

Touch each one once

Tap each one to count it

💡 Touch each thing one time as you say one number.

Point to one thing and say one number. Then move to the next thing.

If you skip one, your count is too small. If you touch one twice, it is too big.

🧠 How to think about it

Count in rows. Go across the top row. Then go to the next row. Do not jump around.

how many: the number of things in a group

🏡 Try it at home

Count the spoons in the drawer. Move each spoon to the side as you count it.

The last number tells how many

Tap each one to count it

💡 The last number you say tells how many there are in all.

Count 1, 2, 3, 4, 5. You stop at 5. So there are 5.

You do not need to say all the numbers again. Just say the last one.

🧠 How to think about it

Sam counts 1, 2, 3, 4, 5, 6. How many cars? Look at the last number he said. It is 6.

in all: all of them together

🏡 Try it at home

Count the socks in the wash. Then ask, "So how many socks?" Wait for just one number.

Zero means none

an empty basket

💡 When there is nothing to count, the number is zero.

An empty box has zero toys. We write zero as 0.

2 birds sit on a tree. Both fly away. Zero are left.

🧠 How to think about it

Look for things to count. If you find none at all, the answer is 0.

zero: none at all, written 0

🏡 Try it at home

Put 3 crackers on a plate. Eat them one at a time. Count what is left each time, down to zero.

Moving things does not change the count

Tap each one to count it

💡 If none come or go, the count stays the same.

Put 5 toys in a line. Now spread them out. There are still 5.

A spread out group can look like more. Count to check.

🧠 How to think about it

Ask: did any come or go? If not, the number did not change. You do not need to count again.

same: not changed

🏡 Try it at home

Line up 6 coins. Count them. Push them into a pile. Ask, "How many now?"

One more

+

Tap each one to count it

💡 One more than a number is the next number we count.

There are 7 ducks. 1 more comes. Say the next number: 8.

One more than 15 is 16. Just say the next number.

🧠 How to think about it

Find the number. Say the number that comes next. That is one more.

one more: add just one

🏡 Try it at home

Stack 4 blocks or cups. Add one. How many now? Add one more and ask again.