Atom Model Set (3 boards and a marble set)
#NAC-P0080
$101.80
This set includes three Atom Model Boards and 1 Atom Model Marble Set (protons, neutrons and electrons).
The marble set consists of 40 large white, 40 large red, and 40 small blue marbles in a plastic storage tray.
More Info
Each group needs 3 boards and 1 set of marbles.