Interactive Spinners

This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.
Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Reasoning, convincing and proving
Being curious Being resourceful Being resilient Being collaborative



Interactive Spinners printable sheet

 



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 use the purple cog, in the top right-hand corner of the interactivity, to 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?