For a 5 year old, **helping** mum with baking (cakes/bread) is really good across many areas - maths, physics, chemistry, comp sci. Lot of hands-on activity, learning to follow an algorithm (the recipe) and doing things in order, lot of measuring of different types of things - fluids, powders, oven temperatures, concept of time. And the good thing is that at the end, something good comes out of it - you can sit down together and eat something nice.
Kids get how to measure a line, they start to struggle with area and doing stuff with volumes can be really confusing so the more practical experience they have in the 3D world the better.
Later - building a castle with boxes, cellotape and scissors (maybe with friends); lego and other building toys.
