So, what is a future investigation?  In this part of your project you write about what else you would like to investigate if you had more time to do so.  For example, in the question we looked at in class (Weight of the car vs. distance traveled down a ramp), I might want to see what would happen if I changed the surface of the ramp or the slope of the ramp and if changing these variables would change the distance traveled. 

The great thing about science is that one question leads to another question, which leads to another question, which leads to another...  Well, you get the picture.