Thursday, 15 November 2012

Median, IQR and boxplots

In this clip I show how to find the median and the interquartile rage of these numbers:

2   8   7   4   0   1   1   11   2   3   2

In this clip I show how to draw a box and whisker diagram (or boxplot) using the same data as above.

Wednesday, 3 October 2012

Saturday, 29 September 2012

Sunday, 9 September 2012


This is a PowerPoint that I uploaded. The viewer doesn't give all the slide transitions but it's better than nothing.

Saturday, 8 September 2012

Welcome to the 2012-13 group

You will need the following equipment:


Paper, pencil, pens, coloured pencils, pencil sharpener, eraser


Calculator (must have fraction button, square root, sin, tan and cos on it)

Ruler 30 cm (clear prefered)

Compass - the one with a pencil not the one showning North
Protractor (360° preferred)

The syllabus we are following is Edexcel linear A. The full syllabus is available here.

There are two tiers: foundation (up to grade C) and higher (grades D-A*)

Thursday, 6 September 2012

Fractions: the four rules

This slide shown will (hopefully) help with adding, subtracting, dividing and multiplying fractions.

Friday, 20 April 2012

Graph plotting

This YouTube shows how to plot the graph of a linear equation (= straight line).

Have a go at plotting the line before watching the video
1. (a) Plot the graph y = 2x + 1
(b) Use your graph to find y when x = 2.5
(c) From the graph find the value of x when y = 4.

A ditty to recall averages

Hey diddle diddle the median's the middle
You add then divide for the mean
The mode is the one you see the most
The range is the one in between!

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