Probably the only time you should let a child play with Plutonium and Arsenic. The entire periodic table of elements on 20 hand-crafted wood cubes. Each colourful block features six element images accompanied by their atomic number, symbol, and name.
20 x 1.75" cubes (44 mm).
Ages 2+.
Made in USA of michigan basswood. Printed using childsafe inks.