Grover's 10 Terrific Ways to Help Our Wonderful World

Illus. in full color. A jam-packed amalgam of puzzles, experiments, optical

illusions, secret codes, and more are clearly explained in this brain-boggling

activity book. Every puzzle, trick, and project can be executed with safe,

inexpensive materials found around the home and the lively step-by-step

instructions make each activity easy to follow.

• Author
• Anna Ross, Tom Leigh

• Format
• paperback

• Pages
• 1

• Publisher
• Random House Books for Young Readers

• Language
• english

• ISBN
• 9780679813842

• Genres
• childrens

• Release date
• 1992