The tub includes 40 cards with engaging, standards-based activities covering 5 different curriculum areas: math, language, science, social studies, and arts & crafts. Plus, you get tons of ready-to-use materials for exploring concepts in depth, including toy cars, spools and marbles for experimenting with action and reaction, ramps, a stopwatch and measuring tape…plus write & wipe experiment posters, vocabulary cards, writing prompts and more!