We have added a new STEM Kit to our Wired for Science collection that allows you and your child to build thousands of molecules from magnetic atom models. Experiment on your own by snapping together atoms to form molecules, or follow detailed step-by-step instructions for 150 molecules. Because the physical atom models already have the correct number of free electrons and empty bonding sites, it is difficult to build a molecule that doesn’t actually exist! See the Happy Atoms Kit in the catalog.