Why did the dinosaur cry when it saw a fossil? It got sedimental. This and many other fun riddles are waiting to be discovered in Mary Quijano's Hooked on Riddles, a book that explores techniques for teaching kids with various education-themed riddles. Teach your students math, English, science, and more with the help of these easy-to-remember word puzzles. People of all ages learn more effectively if they are enjoying themselves, and with these riddles, your students will be continually challenged and entertained. Not many third-graders can claim to have giggled their way through their g.