The Little Labs line begins with Stepping into Science, a starter kit that covers five topics. The kit teaches science fundamentals through 25 experiments, while at the same time introducing children to the concept and process of experimentation. In addition, there are ten single-topic kits: Plants, Physics, Colors, Animals, Weather, Cars, Boats, Time, Cranes, and Navigation. Each kit offers a handful of essential experiments that address common questions children have from their everyday observations. The simple instructions included in each Little Labs kit rely heavily on illustrations. They have just enough text to reinforce vocabulary and aid in language learning, and also to advise parents and adult supervisors. Although numbered, the kits do not have to be used sequentially.