THE EVOLUTION OF THE CANADIAN CONSTITUTION. Mead, 1987. Videocassette. 20 minutes. $164.95. Includes teacher's guide. Distributed by School Services. Grades 7 and up Volume 16 Number 6 1988 November This is a history of constitutional government from ancient days through the recent Canadian constitutional changes. Half the tape is taken up with historical background, so the set could be divided in two. There's a lot to absorb all together. Unfortunately, only stills of historic paintings and documents are used. The medium is not exploited. Picture quality is not as sharp as it might be. Recommended with reservations. From the Evaluation Committee of the Board of Education for the City of North York.