A sunny day is a day for play...Astrid loves playing in the sun. It's where all the most exciting things happen, you know. But Echo the cat would rather sleep in the sun all day. Join Astrid in Sunny Day Play Day and discover the exciting things sunlight can do. As you go, check in on Echo's relaxing sunny day.When you're done with the story, Astrid will share her seven favorite science activities (plus fun facts) inspired by the sunlight, like Build a Kaleidoscope, Build a Periscope, the Evaporation Experiment, and the Light and Color Lab.