This huge book of brain teasers for kids is a genius activity book for kids ages 9 to 12 and up. Keep your kids busy and engaged for hours of fun away from their screens! Some of the activities included are long time family favorite brain teaser puzzle games such as find hidden pictures, cryptograms, math puzzles, logic grid puzzles, picross, and matchsticks. In addition to being fun and challenging, the IQ busters in this book also provide many benefits to brain health and development. The activities can help improve your child's concentration, develop their short-term memory competency and promote their critical thinking abilities.