Purchased as a gift for an 8-year-old girl and her 6-year-old brother. They got right to work exploring ways to make the pieces fit. The 8-year-old has similar construction toys at school and chose a helicopter from the directions book. She loved the challenge of translating the 2- dimensional picture into a 3 dimensional object. It has provided the children with hours of quiet play time together and is a wonderful opportunity to visualize and interpret what they see. Later they began constructing toys of their own.