Outside of a dog, a book is man's best friend. Inside a dog, it's too dark to read. — Groucho Marx
One-Minute Mysteries: 65 Short Mysteries You Solve With Math! and 65 Short Mysteries You Solve With Science! make math and science fun. Read these one-page mysteries and solve them using your knowledge of math and science — or learn something new from the solution to the mystery. Great for reading together with a class, with [...]