Make sure you have enough "space" to put together this stunning 48-piece solar system puzzle. Extra-thick cardboard jigsaw pieces will last for years of puzzling and are easy to wipe clean Assembled puzzle measures 3'L x 2'W. K-3 Core Standards 1-ESS1-1. Use observations of the sun, moon, and stars to describe patterns that can be predicted.; 1-ESS1-2. Make observations at different times of year to relate the amount of daylight to the time of year.; 2-ESS2-1. Compare multiple solutions designed to slow or prevent wind or water from changing the shape of the land.; .