This is Little Guy's booklight:
Snuggler snapped this pic of Little Guy in front of the window:
We also played around with a magnifying glass, figuring out how close-up you had to be to make it magnify, and how far away to make things turn upside down and backward.
Today we addressed a different topic. I cut several equal-size pieces of aluminum foil from Little Guy's treasure trove, filled a bowl with pennies, and put some water in the tub. The assignment was to make boats, and figure out which one could hold the most pennies. (No, I didn't control for pre-1982 vs. post-1982 pennies, though it does make a difference!)
Boat #1: small, round, and thick, held 62 pennies
Boat #2: triangular and thick, with higher and more even walls, held 92 pennies
Boat #3: round and too shallow, only held 29
Then he switched to making barges. The first barge was 11 inches long, and it held 109 pennies.
Barge #2 was 13 1/2" long and held a whopping 200 pennies
Surface area wins, provided the walls are high enough. Just as important as the scientific experimentation was the fact that the project was done without adult involvement. Free time obtained: 40 minutes.