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The Math Explorer was developed by education professionals at the Exploratoriuma San Franciscoa (TM)s acclaimed hands-on museum of science, art, and human perception. The activities in this book apply the hands-on teaching methods that work so well in science to teaching and learning about mathematics. This collection of carefully tested activitiesa games, puzzles, experiments, and projects--provides appealing opportunities for practicing a variety of mathematical skills, using easy-to-find tools and materials. From problem solving and graphing, to fractions and ratios, the activities are easy and engaging. Best of all, they make math fun.