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Number Stairs

This Subtangent investigation looks at the total of the squares inside a stair shape.

Initially students investigate the relationship of the totals of a three step stair and its position on a 10 by 10 grid.

Using algebra, students may discover a general rule which applies to any stair on the grid....

Loopy Snooker

A special snooker table is the basis for this investigation from Subtangent. There are only four pockets on the table and you can only play the ball at 450 to the sides of the table. The ball begins from a given corner of the table and keeps moving until it hits a pocket. The number of bounces is...

Leapfrog

The frogs in this Subtangent investigation have to be moved from one set of lily pads to another, following specific rules. This classic investigation is suitable for a wide age range of students. The number of frogs on each side can be varied, allowing further investigation and generalisations for the number of...

Diagonal Differences

This Subtangent investigation looks at what happens if the numbers in opposite corners of a three by three square, placed on an eight by eight grid, are multiplied then their difference found. Using algebra, students may discover a general rule which applies to any three by three square placed on the grid. Students...

Colouring Maps

This activity from Subtangent is based on the four colour theory, which is used by mapmakers. There is an interactive task which challenges students to colour a map using no more than four colours and ensuring that no two regions which share a border have the same colour. Further resources include examples of...

Measuring

This Subtangent activity uses information from the Hubble space telescope to emphasise the need for accurate measurements and the costs involved when things go wrong.

There are demonstrations of measuring lengths and angles before asking the students to try for themselves.

An interactive ruler and...

Rotational Symmetry

A simple animation from Subtangent presents examples of rotational symmetry in nature and demonstrates how to establish, using a centre of rotation, the order of rotational symmetry.

Students are given five shapes and invited to investigate their symmetry.

Build a Bug Activity

This is a classroom-based activity from the Wellcome Trust Sanger Institute that allows students to explore the features of two bacterial pathogen genomes. The aim of this activity is to highlight the role of different genetic components in two closely related subspecies of Salmonella enterica, and to identify how...

Sportscience and Engineering in Education

This interactive resource explores the roles played by engineering, science and technology in today’s sports. The four modules are: Forces and motion (for students aged 9 to 11 and above); Sports shoe design (for students aged 11 to 14); How high will it fly? (for students aged 11-14); and Making waves (for...

Bodmas and Bidmas

This excel file has four interactive sheets dealing with the order of operations. The first shows groups of calculations involving addition, subtraction and multiplication where the answers can be revealed. The second interactive sheet is similar, but it deals with calculations involving division instead of...

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