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Main Curriculum Tie:
Background For Teachers:
What a Load
Over the Edge
Intended Learning Outcomes:
Launch your straw rocket. Ask the students "What did you observe?"
Part 1: What a Load
The force of the car remains the same. Additional weight is added to each run. At first, the amount of washers (weight) added does not affect the toy's performance. Later one, each additional washer (increased weight) makes it more and more difficult to move the load. Finally, the load (weight/washers) cannot be moved by the amount of force applied.
Part 2: Over the Edge
The sock filled with the rice remains the same weight. As force (washers) is added to the paper clip, it reaches the point where the force is enough to move the weight. The greater the amount of force (number of washers), the greater the effect on the weight (sock) thus making the sock move across the tabletop and over the edge more quickly.
Part 3: Collision Zone
Tape the dowels together at each end.
The balls are all the same size but they are not all the same weight. The weight of each ball helps to determine how it will react when it collides with another ball. The material used to make each ball will also affect the experiment. Some materials absorb more energy.
Objective 4:2 Use appropriate techniques and tools to determine measurement.
1. Measure and record the distance the wind-up or pull string toy goes each time.
Adaptation: All three main activities can be investigated by the students individually or in small groups at a learning station, or demonstrated to the entire class by the teacher.
Homework & Family Connections
Have the student make a straw rocket at home.
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