Demystifies middle-school math concepts that are most challenging, sharing step-by-step instructions for developing real-world math skills, providing time-saving tips and tricks, and offering practice problems with detailed answers and explanations.

Ready to exercise those brain cells? Professor Arthur T. Benjamin is renowned for his feats of mental calculation performed before audiences at schools, theaters, museums, conferences, and in this series, he shows that there are simple tricks that allow anyone to look like a math magician. Throughout these lectures, he shows how everything in mathematics is connected--how the beautiful and often imposing edifice that has given us algebra, geometry,...