Sharpen critical math and thinking skills with the Brainy Book of Time and Money With challenging practice pages, entertaining puzzles and games, and engaging word problems, each page helps young learners hone math proficiency while building on basic skills. The Brainy Book series provides fun, engaging activities for young learners. The series is dedicated to helping children practice and perfect important basic learning skills. These colorful books sharpen concentration skills while supporting classroom learning. Each colorful page offers ample space for children to complete exercises. These books provide an entertaining way to hone critical skills while having fun at the same time.