S1·E231 Episode 231
Aired May 13, 1963
Synopsis
Christopher Trace and Valerie Singleton introduce a magazine programme for younger viewers. Including Petra the Blue Peter Puppy shows what she has learnt during the past few months, "The Green Grass Grew All Around" sung and played by Steve Benbow and John Langstaff and Elastic Gymnastics: How you can bounce ten feet in the air.