When Flinn’s very own biologist picked up this book and couldn’t stop reading it, we knew this was a “must-have” book for your biology class. Consists of 50 inquiry-based thinking activities that force students to use an entire array of cognitive skills, such as questioning, defining, hypothesizing, induction, deduction, fact-finding, assuming and comparing and contrasting. The book contains 23 relatively easy, 17 moderately difficult and 10 difficult nature puzzlers. Each puzzler includes an interesting problem or situation read to the class by the teacher. Students then devise a strategy to solve the problem or explain the situation using a variety of cognitive skills. Reproducible student “fact-question” and “hypothesis” worksheets are included as well as teacher information, possible solutions, alternate hypotheses and additional activities. Skills index, concept index and organism index. 152 pages, 8½" × 11", soft cover.