Fifth-grade level projects and experiments can test the speed of ice melting or the strength of eggshells. Many experiments can be done using simple household items such as soft drink bottles, balloons and eggs.
For instance, fifth graders can conduct an experiment investigating which soft drink brand sprays farthest when shaken. A student can make a self-inflating balloon using vinegar and baking soda in a soda bottle. Students can test whether adding salt to pasta makes it cook faster or whether ice would melt faster if it's in an unusual shape. Another unusual experiment is testing the strength of egg shells by stacking books on top of four eggs in a carton to see if they break. Students could also test whether text on a screen or text on paper is easier to remember.