I used to do stuff like that when they were younger, though getting mine to chart anything has always been an epic battle (we've done rainfall and plant growth, haven't tried fish growth as the ones in our aquaponics are hard to see XD
We still do mostly practical stuff, just eldest has to do more theoretical stuff now given what he wants to get into. Fortunately he is interested in it and has voluntarily done extra on occasion. I think if he had the option to do extra algebra and chemistry instead of English he would take that in a heartbeat XD
Nurseries only smell so much better depending on how much manure they're using ;D
