Teaching my son some 40k

For the first time I ran a little small skirmish game with my 5 year old son tonight. I mostly did it to help him work on counting and a little math. He had a lot of fun and got to whoop on my sisters with a ton of daemons. Don't know how much if any of the rules stuck but it was a cool little counting game for him, taught him how to roll dice and measure with a tape measure.