DNA model chips

I made these simplified DNA model chips for students who learn about DNA and RNA.
These chips can be joined, stacked and twisted using fine wire to present the basic structure of DNA and RNA. Students learn very quickly if they have something to play with in their hands.

I recommend you to print each chips (A,T,G,C,U) in different colour, to see the difference between each nucric acid entities.
Please note, this model has been radically simplified, so tell students about this is not really