Working with probability theory

We have struggled a bit with probability theory, and made this gadget to select random numbers. We then compared it to manual random numbers using dice. Then we entered it into a spreadsheet and analysed the data up against each other. One of our kids build the number selector with dad.

You can see our recordings and progress here:

Random dice number selector we made.
Ordinary dice used.
Manuel probability chart.
It was very slow!