One question.
Three predictions.
Try a short balance investigation before a workshop. This fictional learning example runs only in your browser; it does not save or send your choices.
Which way will it tip?
Imagine a weightless beam and equal mass units. Put two units one step left of the pivot and one unit two steps right. Predict what happens when you let go.
Authored ideal-model diagram. A fictional learning example, with friction and beam mass omitted.
Without JavaScript, choose a prediction and compare it with the explanation below.
Outcome: it stays balanced
The level beam in the diagram shows the outcome. Left: 2 × 1 = 2. Right: 1 × 2 = 2. Each side has the same turning effect about the pivot.
A real model may differ because the beam has mass and the pivot has friction. That difference is something to investigate.
A notebook
for noticing.
You can use these prompts for any small investigation. Copy them onto paper and keep one test per page.
- My question is…
- I predict… because…
- The one thing I will change is…
- The things I will keep the same are…
- I observed…
- Next, I would like to try…
For physical experiments, use age-appropriate materials and suitable adult supervision. Ask the workshop organizer for the activity’s specific guidance.
Words for the experiment.
What is a pivot?
The pivot is the support a lever turns around. In the diagram it sits in the middle of the beam.
Why does distance matter?
A load farther from the pivot has a larger turning effect. For this ideal example, compare load × distance on each side.
Why might a real test look different?
A real beam has its own mass, weights are not perfectly identical and friction can hold the pivot still. Record those differences instead of hiding them.