**"Ratio"**

## 30-minute Global Maths & Science Lesson 2022 Golden Mathematics

*By toni On 8 October, 2022 · Leave a Comment*

Click here to register for the 2022 GLOBAL MATHS AND SCIENCE LESSON ON TUESDAY 11 OCTOBER. See below for links to lesson resources in English and Spanish.

Sheep Talk The first sheep talk word is A. To find the next term in the word sequence, each A is replaced by B […]

## Elephant Dreaming

*By toni On 17 August, 2020 · Leave a Comment*

Start to explore ideas of Fibonacci numbers and the golden ratio by copying the picture and drawing this spiral which is made up of quarter circles. Watch this inspirational video.

Then create your own elephant. The numbers in the centres of the squares give the radii of the quarter circles […]

## Surprise Ratios

*By toni On 3 May, 2020 · Leave a Comment*

A circle of radius r and centre O, is inscribed in a triangle with edges of lengths a, b and c.

Find the area and circumference of the circle.

Find the area and the perimeter of the triangle.

What do you notice about the ratios of the two areas and the ratios […]

## Pizza

*By toni On 22 July, 2018 · Leave a Comment*

On Monday Dolly, Kapa and Lolo cut a pizza into equal sized pieces and share the pizza in the ratio 4 : 3 : 5. How many pieces were there and what fraction did each person get?

On Tuesday they buy a pizza of the same size and share it in the […]

## GP Geometrically

*By toni On 12 January, 2017 · Leave a Comment*

The squares in the diagram are to help us visualise an infinite geometric sum and we are not summing the areas of the squares, simply the lengths along the x-axis. The squares have side lengths given by powers of r: where 0 < r < 1 .

## Mixing Paints

*By toni On 18 January, 2016 · Leave a Comment*

Paint A is made up from red and white paint in the ratio 1:3 and paint B is made up from red and white paint in the ratio 1:7 . The cans are the same size.

You can mix the paints to produce different shades of pink. Explain how to find the ratio of […]

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