Counting on and back to 20 Learn on how to count on and back from 0 to 20. Comparing numbers within 20 Find out how to compare numbers 1 - 20, using number lines and symbols. Odd and even numbers ...

Counting on and back to 20 Learn on how to count on and back from 0 to 20. Comparing numbers within 20 Find out how to compare numbers 1 - 20, using number lines and symbols.