This a 3 day science lab I do with my students when we explore force and motion with gravity being the force. It involves placing a car at 3 different spots on a ramp and seeing how far it rolls. Our investigation question is: What is the effect of the starting height of a car on a ramp and the distance the car can travel? I have incorporated some writing in science as well as using their science notebooks. This takes us about three days with the 3rd day purely focused on writing and drawing conclusions from the data they collected.