Wikipedia
Mathmakers
Mathmakers was a Canadian educational children's television series produced in 1978 by the province of Ontario's public television network, TVOntario. The series starred Derek McGrath and Lyn Harvey.
Producer/Director Clive Vanderburgh, Production Assistant Jane Downey and Brian Elston, Editor.
The premise is set in a television studio where the production crew produces an educational series illustrating various concepts of grade school mathematics.