Series 12 Episodes
1. Puddles and Pools
December 5th, 1972
2. Spots
December 12th, 1972
3. Animals
December 19th, 1972
4. Lines
January 2nd, 1973
5. Doors
January 9th, 1973
6. Wheels
January 16th, 1973
7. Bricks
January 23rd, 1973
8. Balance
January 30th, 1973
9. Metal
February 6th, 1973
10. Weather
February 13th, 1973
11. Nets
February 20th, 1973
12. Clocks
February 27th, 1973
13. Pipes
March 6th, 1973
14. Uniforms
March 13th, 1973
15. Numbers
March 20th, 1973
16. Water
March 27th, 1973
