Investigate bugs and worms
A fun project for your budding entomologist is creating a bug hotel or worm farm. Dead wood is the perfect condo for beetles and their larvae; decaying leaves or hay provide an ideal environment for invertebrates; and centipedes, spiders, wood lice and beetles thrive in loose bark. You can find fancy bug hotel plans on blogs such as Garden Therapy, or you can gather some rotting wood or wet leaves from around your neighborhood and set up a bug corner in your yard.
Worm bins simply require compost, a lidded, ventilated container of some sort, a starter crop of red wiggler worms (found at most pet stores) and a steady supply of kitchen scraps. Seattle Tilth offers a free worm bin resource on its website.
Kids can bury compost in the worm bin as an ongoing task, exploring the different stages of decomposition and worm population.
Next up: a secret hideaway