What should the students know as a result of this lesson?

• Students will understand how a catapult works
• Students will understand the engineering design process
• Students will understand that the solution to one problem may create other problems and require refining the original design
• Students will understand that the best design may not be feasible because of constraints, such as material availability, cost, or time

What should the students be able to do as a result of this lesson?

• Students will be able to build a simple catapult
• Students will be able to evaluate and improve an existing design
• Students will be able to give and receive constructive criticism