homemade rain gauge

Over the summer, we did a little theme unit on water and weather. One easy project is to make a simple homemade rain gauge. You can use any plastic bottle and write on it with a Sharpie. A 2-liter bottle works well because you can invert the lid and duct tape it on, keeping out bugs and debris.

Whenever it rains, Nora cries, "MOM! We need to put out the rain gauge!" It's exciting for her to see how much rain we got, although she always expects a lot more. I guess one or two inches of rain doesn't really LOOK like much to a 5-year-old!