Grades 9-12. Developed for visually impaired students, this set makes it easy to see or feel the structure of the atom. Subatomic particles are molded with their charge on top (plus for protons, minus for electrons, and a flat surface for neutrons), while orbitals are represented with raised rings around the nucleus.

Using the 30 electrons, 30 neutrons, and 30 protons provided, students build atoms, ions, and isotopes on both the container lid and bottom. Activity reinforces concepts of atomic number, atomic mass, filling order of orbitals, and ionic charge.

Set accommodates one group of 3 to 4 students. Container size, 9" diam × 1 1/2" H.