This is a science study course from Educational Insights product number 9106, for use in class rooms, groups, and homes. It consists of a set of 138 reference cards, 4 tabed cards, and a box. Each card has text, with the occational black and white illustration. The set is broken up into 'Introduction' 13 cards {10 numnbered, title card, Intro card, and Table of Contents}, 'Animal' Kingdon 53 cards, 'Plants' 48 cards, 'Ecology' 24 cards, and 4 tabbed cards with the name of each section. It was originaly copyrighted in 1971, while a later box has the copyright of 1974. The box says it contains "135 Nature Study Activities".