From addition and subtraction to plane and space geometry, simultaneous linear equations, and probability, this book explains middle school math with problems that kids want to solve: "Seventy-five employees of a company buy a lotto ticket together and win $22.5 million. How much does each employee get?-Intriguing facts about the history of math show what a human creation it is, and human errors are revealed through explorations of both Maya and Hindu...

With fascinating experiments, models, and demonstrations, this scientific survey provides a vivid exploration of natural phenomena. Ideal for budding earth scientists, this in-depth resource demonstrates how to build a seismograph to record a simulated earthquake, compare pressure waves and shear waves the two types of ground shocks with a Slinky, and replicate a tsunamis destructive effect on a coastline built in a bathtub. The chapters answer questions...