The Scientific Method "Investigating Floating Paper Clips. This product is classroom ready. This simple science experiment teaches students the scientific process in an engaging way. This is a great lab to use anytime during your school year and also during the science fair season. As you can see it is adaptable for multiple grade levels. I used this experiment effectively for K-6 grade levels, however it is written for 3-6. Included: teacher notes, scientific student lab, student lab handouts and classroom scientific method posters. Enjoy and have fun with science.