Wednesday+27th+April

Wednesday 27th April

REMEMBER- Otago Test #1 this FRIDAY!!!! REMEMBER- Homework this week is to use and attach the [|BEFORE] and [|AFTER] wallwishers we have to record our thinking about RADIOACTIVITY.

To use algebra to explain (patterns, sequences and phenomena)

We have looked at how probability can affect number sequences and chains this week and last- the probability of an atom decaying, the chance of a material reaching its half-life sooner than another etc.

This activity builds on this learning.

You will need the [|interactive activity] for this problem.
 * Musical Chairs**

__**Remember the SUCCESS CRITERIA from the radioactivity unit;**__ -Carry out small practical trials -Record results and tests clearly (and explain your parameters/ conditions) -Make some predictions based on small scale tests -Combine results or carry out large scale trials -Use algebra to calculate the theory behind the tests __SHOW THESE IN YOUR LEARNING TODAY__

A container holds  4   yellow balls,   2   blue balls and   1   red ball. The balls are identical in all ways except colour. Shake the container, and look at how the balls settle.


 * You win if two blue balls touch- in this example, you would lose because no 2 blues are touching.**

Did you win? Complete several shakes and look at your results.

Approximately how often do you think you would win if you completed  100   throws? What is the effect of attempting 1000 throws? Even 100,000? Is it worth going this far? Make a prediction and **then** check it by doing the experiment.
 * Can you explain how to work out the theoretical probability of winning?**