A contest in which boys and girls demonstrate their enterprise in investigating the world around them.
The third of six heats.
Paddy Feeny introduces the three teams:
St. Augustine's School - Mathematics of the one-armed bandit
Queen Elizabeth's School - Purifying chemicals by zone-refining
Heywood School - Peat as a preservative of history
Their work is assessed by: Professor J. Fremlin, Dr. Howard Aron, Professor William Kershaw
under the chairmanship of Dr. Tom Margerison.