Prototypes designed for APH by The Puzzled Co. by Waterjet Works, designers of Puzzles for EveryBody™.

Tactile Ionic Bonding Kit pieces

Waterjet cut PVC version of interchangeable puzzle-like tactile subunits, with large print labels and braille, that demonstrate how oppositely charged ions form bonds.

https://www.aph.org/product/tactile-ionic-bonding-kit/

Puzzle pieces are waterproof and easy to sanitize.