Kick-start the building blocks of calendar concepts. Explore and feature special days, months, seasons, and the weather. Includes a 17 1/2" x 23 1/4" calendar, weather graph, weather wheel, seasons card with slider, 33 numbers, separate topper, 12 month headers, 46 special days, blank header, and Yesterday, Today, Tomorrow sliders. 103 pieces, up to 23" . Coordinates with BlockStars. Collection.