Made a catapult out of popsicle sticks and rubber bands

Science

• The child learned about potential and kinetic energy through the use of the catapult. They observed how the stored energy in the rubber bands was converted into motion when the popsicle stick was released.
• They gained an understanding of force and motion by experimenting with different rubber band tensions and angles of release, observing how they affected the distance and height the object was launched.
• Through trial and error, the child learned about engineering design and problem-solving. They had to adjust the placement and stability of the popsicle sticks to ensure the catapult functioned properly.
• They also explored concepts of velocity and trajectory as they measured the distance and angle at which the object was launched.

For continued development, encourage the child to explore different variables that may impact the catapult's performance, such as using different types of rubber bands or varying the size and shape of the popsicle sticks. They could also try launching objects of different masses to observe how it affects the catapult's capabilities. Additionally, they can research historical catapult designs and engineering principles to gain a deeper understanding of the mechanics behind their creation.

Book Recommendations

• The Boy Who Harnessed the Wind by William Kamkwamba and Bryan Mealer: This inspirational true story follows a young boy in Malawi who builds a windmill out of scraps to bring electricity to his village.
• How Machines Work: Zoo Break! by David Macaulay: This book explores the inner workings of various machines, including catapults, through an engaging story about a group of zoo animals trying to escape.
• The Way Things Work Now by David Macaulay: This comprehensive guide explains how various machines and mechanisms, including catapults, work in a fun and accessible way.