Series 12
(1972)
Episodes
Puddles and Pools 0.0
December 5, 1972
Spots 0.0
December 12, 1972
Animals 0.0
December 19, 1972
Lines 0.0
January 2, 1973
Doors 0.0
January 9, 1973
Wheels 0.0
January 16, 1973
Bricks 0.0
January 23, 1973
Balance 0.0
January 30, 1973
Metal 0.0
February 6, 1973
Weather 0.0
February 13, 1973
Nets 0.0
February 20, 1973
Clocks 0.0
February 27, 1973
Pipes 0.0
March 6, 1973
Uniforms 0.0
March 13, 1973
Numbers 0.0
March 20, 1973
Water 0.0
March 27, 1973