A kit that can be used to teach students about ionic bonding and the needed number of combinations of anions and cations. We used to use paper versions in class, but I wanted something more durable, as well as the ability to swap out the element so many examples could be used. 

Ions are in the lewis dot form so students can see how their octets need to be completed and which element is the electron donor/receiver.

You can use them as-is or use the included hole for a 3x1mm magnet so they stick together.