Last September, we had Mrs. Oakley in to talk about composting. We learned about what worms in soil could do to organic material. Then we took two big buckets and loaded them with top soil, worms, and various items we would normally throw away. We predicted what would happen to each buried item. We wrote our work up, using the scientific method, and waited for May.
We had buried the following in each bucket: banana peel, lettuce leaf, plastic water bottle, a plastic grocery bag, wrapper from a granola bar, shredded paper, dryer lint, flower bloom and leaves from a geranium, crab apple tree leaves, a carrot slice, and six grapes. (I added some other organic items throughout the year in hopes the worms had enough food!)
Today, we split into two groups and carefully scooped all the dirt out onto our tables and analyzed the changes.
Here we are scooping and observing:
Here's all that was left:
The bottle, the wrapper and the bag are pretty much unchanged (and a little dirty). Not much of a surprise since we've learned plastic pretty much lives forever if it's not recycled. The worms are fat and happy! I'm taking all three bowls full of them home tomorrow to plant with my flowers. Until then, I'm them water and some veggies from my Subway sandwich to snack on.
So what did your fourth grader learn from this? Ask him! Ask her!
Pink & Say by Patricia Polacco
2 years ago