P164 - Exploring levers
An activity where children investigate how much effort is needed to lift a load.
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P177 - Measuring how pulleys affect lifting a load
An activity where children measure the effort needed to lift a bucket of water with different pulley systems.
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P176 - Observing how pulleys affect lifting a load
An activity where children feel how much effort is needed to lift a bucket of water with and without pulleys.
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