MathsClass

Note for self really,

In the new NSW Syllabus for Mathematics K-10 what used to be referred to as scores when analysing data are now called data values.

So the definition of mean is written as

$$\bar{x}=\frac{\text{sum of data values}}{\text{number of data values}}$$

MA4-20SP

Here’s a second foldable for the Preliminary (Year 11) General Mathematics course for the topic DS1 Statistics and society, data collection and sampling.

This second foldable is about classifying data.

I’m trying to make the time to create foldables to use with my Year 11 General Mathematics class. The topic DS1 Statistics and society, data collection and sampling lends itself to foldables.

The first foldable is for the process of statistical inquiry:

posing questions, collecting data, organising data, summarising and displaying data, analysing data and drawing conclusions, and writing a report

On MathsStarters, I have added a Frequency Distribution Table tool. The tool lets you have 3 to 10 scores, you tally as you go and the frequency and total are calculated.

You could use this on a projector/IWB (the buttons for incrementing the tally are sized for an IWB). Or, students could use this to record data on their own laptop as they collect it – paperless!

Smartie colours are not evenly distributed across the two bags of 11 fun size boxes I used with my class:

Looking around, there are lots of activities for collecting and analysing data using small boxes of Smarties. Here is my version.

Returning from a few weeks leave, it wasn’t clear where my Year 8s were up to. I figured they had started looking at grouped data, but I didn’t want to repeat work they might have already seen.

Google have added a nice little feature to their online spreadsheet – the ability to collect information via an online form.