Yeah - I see this approach as being far too “on the nose” to be sustainable. It makes it seem like work. My approach as a kid, and as an adult, which I hope to

Yeah - I see this approach as being far too “on the nose” to be sustainable. It makes it seem like work. My approach as a kid, and as an adult, which I hope to instill in my daughter, was just to use mathematics as a lens to examine the world - using the equations of motion to derive how deep a well is or how high a cliff is from dropping a stone, calculating the mass of water in a swimming pool and therefore the force on each support column underneath it, the number of candies in a jar (man, I won so much candy as a kid), estimating the number of people in a crowd from a sample (that got me backstage at Glastonbury!), how much longer will I need to read this book based on my current pace, what my basal metabolic rate is based on the curve I see in my weight loss on a fixed diet, etc. etc. - nothing overly taxing, but plenty of things which answer small “I wonder…” questions, and keep the habit of doing mental arithmetic alive, and various equations and tools alive in my mind. It also ends up giving insight, and therefore an incentive to keep honing those mental tools. I generally find the best way to get myself or anyone else to do something is to make it useful and interesting, and to make it not feel like work.