Grade 1 Math · Level 1, Add & Subtract to 10
Add and Subtract on a Number Line
How the lesson starts: Add and Subtract on a Number Line
Zip the race car
Vroom vroom! Meet Zip the little race car. Zip drives on a track from 0 to 20. Zip jumps forward to add. Buckle up!
Jump forward to add
Zip starts at 5. Jump +4! Zip drives forward. 6, 7, 8, 9. Zip lands on 9. 5 + 4 = 9.
A bigger jump
Zip starts at 11. Jump +3. Watch out! Don't count 11. Zip is already there. 12, 13, 14. Zip lands on 14! Tap 14.