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In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device. This activity can be used as a lesson on simple machines, motion/forces or construction.
- Under 5 minutes
- 1 to 2 hours
- $10 - $20 per student
- Ages 8 - 18
- Activity, Model
- English
Quick Guide
Materials List (per student)
- wooden base, 1 1/2 in x 5 in x 3/4 in
- wooden arm, 3/4 in x 3/4 in x 5'
- 4 wooden tongue depressors, 6 in long x 3/4 in wide
- 2 machine screws, 10-24 x 2 1/2 in long
- 2 teflon lock nuts, 10-24
- 4 wood screws, 3/4 in long
- 1 sheet metal screw, pan head, 1 in
- wooden spring-loaded clothespin
- plastic drinking straw
- rubber band
- plastic spoon
- 3/16 in drill bit
- electric drill
- hot glue stick and gun
- projectile (i.e. penny or other coin)
Subjects
-
Engineering and Technology
-
Technology
- Construction
-
Technology
-
Mathematics
- Measurement
-
Physical Sciences
-
Energy
- Potential and Kinetic Energy
- Energy and Power
- Work and Machines
-
Motion and Forces
- Machines
- Projectile Motion
-
Energy
Informal Categories
- Model Building
- Toys
Audience
To use this activity, learners need to:
- see
- read
- touch
Learning styles supported:
- Involves hands-on or lab activities
Other
This resource is part of:
Access Rights:
- Free access
By:
- Rathjen, Don
Rights:
- All rights reserved, Exploratorium, 2002