Rick Broida is the author of numerous books and thousands of reviews, features and blog posts. He writes CNET's popular Cheapskate blog and co-hosts Protocol 1: A Travelers Podcast (about the TV show ...

More than 50 activities connected to mathematical concepts—geometry, fractals, and tangrams, among others—are explored through 37 “labs” that feature step-by-step instructions and photographs. The ...

Explore four-sided shapes looking at straight lines, curved lines and 2D shapes. What are 3D shapes? Learn about 3D shapes and their properties. What is tessellation? Find out how tessellation is when ...

Shapes are everywhere. If you look around, you may be able to see circles, squares and even triangles in the furniture or the flooring. If you step outside, into a garden, park or even the grounds at ...