These famous logic stories stimulate critical and creative thinking skills. Each story contains a hole or mystery that the students must solve. Students must ask questions in order to gain clues to solve the mystery. Most stories will take 3 to 20 minutes to solve. Nathan Levy's Stories With Holes are designed to provide growth in imagination and divergent thinking skills. The stories are sure to create a dynamic learning experience while teaching kids to work together to solve a problem. Each volume contains 20 stories along with step-by-step instructions. These books are great for kids of all ages. The volumes are in order of when the stories were developed and not difficulty level. (You may order individual volumes at $9.95 each.)