**"Symmetry"**

## Grades 4 to 9 Durer’s Magic Square

*By toni On 16 March, 2018 · Leave a Comment*

Add the columns one by one, add the rows, then add the diagonals. What do you notice?

This is Albrecht Durer’s supermagic square from his famous engraving Melencolia dated 1514. Can you see it at the top right hand corner of the engraving under the bell? It has many […]

## PRIMARY G1 INTRODUCTION TO 2D SYMMETRY

*By toni On 5 January, 2018 · Leave a Comment*

People maths and paper folding and cutting to explore the concept of symmetry.

Click here to download a pdf with all you need to run your own professional development workshop.

## Grades 11 & 12 Encircling

*By toni On 15 July, 2017 · Leave a Comment*

This shape is an equilateral triangle sitting on top of a square.

What is the radius of the circle that circumscribes the shape?

Click here for a hint if you need one to get started.

## Grades 4 to 7 Symmetry Challenge

*By toni On 21 June, 2017 · Leave a Comment*

How many symmetric patterns can you make by shading whole squares in a 3 by 3 grid?

Where are the mirror lines (lines of symmetry)?

Which of your patterns also have rotational symmetry?

Here is just one pattern. Can you find more than 60 different patterns? Patterns that are […]

## Grades 4 to 7 Tangram Pattern

*By toni On 3 June, 2017 · Leave a Comment*

Arrange the 7 tangram pieces to make the shape in the grey picture.

What do you notice about this shape?

Describe the shapes of the tangram pieces.

What is the same and what is different about the shapes of the tangram pieces?

Make a pattern of your own using all 7 pieces.

[…]

## Grades 5 and 6 Paper Dolls

*By toni On 13 May, 2017 · Leave a Comment*

Fold a piece of paper in two and tear out half a person. An old newspaper is good for this. Now open out your little person and flatten it. You have made a paper doll that is symmetrical about the fold line. The two halves of the doll on […]

## Grade11 Quadratic Functions

*By toni On 20 February, 2017 · Leave a Comment*

The diagram shows the graphs of five quadratic functions or parabolas.

How do the points where the graph cuts the x axis relate to the axis of symmetry of the graph and the solutions of the quadratic equation ?

Draw a sketch graph of each of the following functions:

if a > […]

## Mathematical Games Advent Calendar

*By toni On 28 November, 2016 · Leave a Comment*

This month we have a link to an Advent Calendar on the NRICH website which gives you a mathematical game when you click on any day in December up to Christmas Eve.

Some of the games you can play on the computer but for many of them do not need a […]

## Grades 6 to 10 Cube Nets

*By toni On 1 November, 2016 · Leave a Comment*

Some arrangements of six squares form the net of a cube, others do not. Explain why the two shaded arrangements are nets of cubes and the two unshaded arrangements are not.

Draw this net and make your own cube.

How many faces, edges and vertices does a cube have?

[…]

## Grade 8 to 12 Mirror Mirror

*By toni On 28 October, 2016 · Leave a Comment*

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