Dr. Lee Hoi Man, Ms. Lee Oi Ying Sanny, Wong Hoi Ying
The video introduces the making of catapult by using everyday materials at home. The teacher first highlights the characteristic of catapult as well as the principle of its motion. Students are given with opportunities to brainstorm different designs fora successful catapult. Then, the teacher demonstrates the process of preparing different components of the catapult, and asks the students to find everyday materials at home for such making. After the catapult is made, reflection questions are posed at the end of the video for students to learn more about the effects and reasons of using different materials.
