Trying to find a science unit that has everything can be a frustrating task.
Some units require costly or hard to get materials.
Others require an extensive background in science for the teacher. Still others are just plain dull because of a lack of activity. And then there are those units that don't involve the students in the processes of science. Well, here is a unit that has few drawbacks and a great deal of student interest. It is a unit in which the teacher can learn a great deal along with the students, and it has an added bonus.