Recording work in a science journal becomes important in second grade. I printed this experiment right off the internet, but when I read the Teachers.net Lesson Plans instructions, it said NOT to post URLs here. Pitch Put five metal items in a box. Items should be nearly circular in shape. Include a large blunt nail for striking.
Students hold the string and strike the item with the nail.
Bury these pieces in a plastic shoe box. Students must dig for dino-bones, but carefully. Again, we do a lot of class activities before this box is added for independent work. There are several levels of classification activities. For the first, I place thirty small objects in the box.