101 Activity Books Pack includes four books titled Brain Teasers, Early Learning, Logic Puzzles, and Mega Activity. Each book in this pack features more than 100 different themed activities including patterns, mazes, inferences, analogies, and more. This collection of activities will help children build their analysis and critical thinking skills. Ideal for ages 46 Colorful presentation 4 books of 72 pages each Different themed brain scratching puzzles Answers included This adorable and colorful pack of books will keep children engaged for hours ensuring they understand the challenge. All activities come with answers to help kids out if they get stuck on a puzzle or to check their progress.