Interactive Spinners

Stage: 3 and 4 Challenge Level:

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We have two spinners each numbered $1$ to $4$.
We're going to spin them both and add the numbers.
What possible totals might you get?
What is the least likely/most likely total to occur?
Can you summarise your ideas clearly? Can you justify them?

Use the interactivity to test these hypotheses.

Now make a new set of spinners, and write down a hypothesis about the possible outcomes and the shape of the relative frequency bar chart. Justify your ideas to a friend, before testing them with the interactivity.

Once you have experimented with the interactivity you might like to try this problem: Which Spinners?