Kick-start the building blocks of calendar concepts! Explore and feature special days, months, seasons, and the weather. Includes a 17½" x 23¼" 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". Includes a Discovery Guide with creative activities that teach and delight! Coordinates with BlockStars!™ Collection.