In science we have been learning about forces (push, pull, gravity, friction) and how these forces impact motion. The second part of our unit has the students working with K-Nex to create different vehicles according to the lab's specifications. They have enjoyed the many challenges! They are using timers to time their cars, different sized washers to speed up or slow down their cars and they have used wood blocks to represent a load. Today they had to create lunar vehicles that carry lunar rocks (wood blocks)! I have been very impressed with their teamwork on these challenges!