Hi HN parents, I'm wondering how you expose STEM topics to your kids?
On my side, I think I picked the interest as my parents frequently took me to Natural Museums when I was 5 and I was super interest to dinosaurs and palentology in general at the time. We also sit together every Sat night to watch a few episodes of palentology programs (probably BBC or something else but there was many years ago). I never studied in that field but nevertheless I think that was one good trick to get kids into STEM and I'll probably do the same for mine.
What's your trick? I really believe that every kid is naturally interested in STEM but needs some guidance.
Changing the color of red cabbage juice with lemon and changing it back with backing soda. (Bonus points for the bubbles.) (Some teas also change color, but it not so dramatic.)
Magnets, lot of magnets. Make a complete analysis of every wall and object at home to see if it is magnetic, and think what is is made of. (Try also coins. Here in Argentina, some of the 10 cents coins were magnetic and other non magnetic. (Self nitpick: ferromagnetic.))
Some germination experiments. (Bonus point for spotting the difference between corn and beans.)
Watch light at night using a CD as a diffraction lattice to get rainbows. Some light have a continuous spectrum (like the old incandescent lights) and other have very peaky spectrum (like the old red/orange/yellow/green leds, or the neon lamps of different colors). (Modern lamps and white/blue leds are more complicated.)
Did you see the video of the feather and hammer in the Moon? (This in not in the DIY category, but there are a lot of things to talk about.)