Don't forget natural science and the outdoors! My DH is a scientist, but he's a botanist, so the science in our house comes from a different angle. The natural world outside your doorstep is a different kind of science lab, and the naturalist approcah is often forgotten these days. My DD is an avid birder, entomologist, botanist, you name it. There are some really awesome citizen science projects out there these days. For instance, if you geek out on this sort of thing, eBird is incredible. You can do some simple things like planting certaint sunflower seeds in your yard and then observing what insects come to them on a certain day and sending in your observations, Then your kid can look at the other data sent in by others and see how this coalesces into useful data. There are a million ways to do this. Cornell Lab of Ornithology has some great stuff if your kid is into birds at all (and even if they aren't--again, you can really approach this as science, not lalala nature). Another thought is stream insects studies--what you find directly reflects water quality. So much great stuff like this out there. Also, it encourages the scientist mindset every time they're outdoors. My kids' thing right now is weather. Weather! It's always happening! The patterns are constantly there to observe, and you can see if your hypotheses were correct! I mean, it's perfect. It's pretty hilarious when they are walking through the grocery store parking lot loudly arguing about whether those are cumulus or cumulonimbus, though. They also constantly think they are seeing bizarre, rare phenomena.
