Elemental Block Set
Likely the only time you will want your kids to play with plutonium and arsenic.
Twenty solid basswood blocks are decorated with the entire Periodic Table of Elements, sorted by color for each grouping (with similar chemical properties). Each face has an elemental symbol, its atomic number, and its full name.
Cubes are 1.75", lightweight solid American basswood (1.2 ounces each) painted with non-toxic, mouth safe inks. The entire set is shrink wrapped for protection. Safe for kids 2+.
Made in Michigan