1 to 20 to 1

1 1, 3, 5, 7, 9
2 I'm a Circle
3 A Pair of Shoes
4 A Counting Star
5 A Mouse Is Smaller Than a Dog
6 Ten Fat Sausages
7 Putting Things in Order
8 A Square
9 Ten in the Bed
10 Two Little Frogs
11 Seven Days
12 1 to 10 and Back Again
13 Lean Forwards Lean Backwards
14 2, 4, 6, 8, 10
15 1, 2, 3, Triangle
16 Fill It Up
17 Plus 1
18 1 to 19
19 1 to 20 to 1
20 2, 4, 6, 8, 10, 12, 14, 16, 18, 20