Counting to 20: Building Your Number Bridge
Ten fingers. Ten toes. But what happens when you run out of fingers and still have more to count? Today you build a bridge from 10 all the way to 20, one number at a time!
What You'll Learn
- Count out loud from 1 to 20 without skipping - Match a number word to the right group of objects - Tell which of two numbers is bigger using a number line - Spot the pattern in the teen numbers (11-19)
Ten, Then a Little More
Numbers 11 through 19 are called the 'teen' numbers. Each one is just 10 plus a little bit more. 13 is 10 and 3 more. 17 is 10 and 7 more. If you line up 10 blocks in a row and then add loose blocks next to them, you can SEE the teen number appear!
Hold up both hands (that's 10!). Now ask a friend to hold up 4 more fingers. Count all the fingers together out loud: 11, 12, 13, 14. You just made 14 with two people's hands.
After the Teens: 20
After 19 comes 20 — two full groups of 10. Think of 20 as two hand-fulls of fingers, or two rows of 10 blocks stacked on top of each other.
Match each number to the group size it describes.
Terms
Definitions
Drag terms onto their definitions, or click a term then click a definition to match.
Which number is 10 plus 6 more?
You have 14 stickers and your friend has 17 stickers. Who has more?
On a number line, numbers get bigger as you move right. If you ever forget which number is bigger, find both numbers on the line — whichever is further right wins.
Build a Bridge of Blocks
Using 20 small objects (blocks, buttons, or pasta pieces), build a 'bridge': lay down a row of 10 objects, then keep adding one object at a time next to it, saying the number out loud each time, until you reach 20. Take a picture or draw your finished bridge of 20 and label the row of 10 and the extra numbers.
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