Pulley
Description
Students recognize the pulley in daily life machines, such as the well and the elevator. They understand the critical points of its operation.
Learning objectives
It understands the function of the pulley.
Connect engineering to life.
Suggested age group
1st Grade - 2nd Grade
Time
45 minutes
Fields in S.T.E.A.M.
Mechanics
Mathematics
Materials
The cylinder on which the ribbons are wrapped up can become an ideal pulley.
Chopsticks
Rope or twine
Paper tape
Plastic glass
Scissors
Steps
1
Students observe and describe a well, and they make hypotheses about how it might work.
2
Then they learn about the elevator, which works with a similar mechanism. The class asked to identify what these machines have in common: where is that they both carry a significant amount of weight
3
Students make their pulleys using chopsticks, tape, plastic glass, rope, and an old ribbon package.
4
By rotating the shaft to one side, they observe that the rope turns around the pulley and lifts the plastic glass upwards.
5
Instead, as they rotate the shaft in the opposite direction, the rope is released, and the plastic glass descends.
