Resources tagged with: Triangles

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There are 62 results

Broad Topics > Angles, Polygons, and Geometrical Proof > Triangles

Jig Shapes

Age 5 to 11
Challenge Level

Can you each work out what shape you have part of on your card? What will the rest of it look like?

Name That Triangle!

Age 7 to 11
Challenge Level

Can you sketch triangles that fit in the cells in this grid? Which ones are impossible? How do you know?

Possible Pairs

Age 7 to 11
Challenge Level

In this game, you turn over two cards and try to draw a triangle which has both properties.

Sorting Logic Blocks

Age 5 to 11
Challenge Level

This activity focuses on similarities and differences between shapes.

Triangle or No Triangle?

Age 5 to 7
Challenge Level

Here is a selection of different shapes. Can you work out which ones are triangles, and why?

Part the Polygons

Age 7 to 11 Short
Challenge Level

Draw three straight lines to separate these shapes into four groups - each group must contain one of each shape.

Three Fingers and a Loop of String

Age 5 to 7
Challenge Level

Using a loop of string stretched around three of your fingers, what different triangles can you make? Draw them and sort them into groups.

Animated Triangles

Age 5 to 7
Challenge Level

Watch this "Notes on a Triangle" film. Can you recreate parts of the film using cut-out triangles?

Logic Block Collections

Age 5 to 7
Challenge Level

What do you think is the same about these two Logic Blocks? What others do you think go with them in the set?

Data Shapes

Age 5 to 7
Challenge Level

Sara and Will were sorting some pictures of shapes on cards. "I'll collect the circles," said Sara. "I'll take the red ones," answered Will. Can you see any cards they would both want?

Folding

Age 7 to 11
Challenge Level

What shapes can you make by folding an A4 piece of paper?

Egyptian Rope

Age 7 to 11
Challenge Level

The ancient Egyptians were said to make right-angled triangles using a rope with twelve equal sections divided by knots. What other triangles could you make if you had a rope like this?

Bracelets

Age 7 to 11
Challenge Level

Investigate the different shaped bracelets you could make from 18 different spherical beads. How do they compare if you use 24 beads?

Tri.'s

Age 7 to 11
Challenge Level

How many triangles can you make on the 3 by 3 pegboard?

Walking Round a Triangle

Age 5 to 7
Challenge Level

This ladybird is taking a walk round a triangle. Can you see how much he has turned when he gets back to where he started?

Triangle Edges

Age 5 to 7
Challenge Level

How many triangles can you make using sticks that are 3cm, 4cm and 5cm long?

Uncanny Triangles

Age 7 to 11
Challenge Level

Can you help the children find the two triangles which have the lengths of two sides numerically equal to their areas?

Nine-pin Triangles

Age 7 to 11
Challenge Level

How many different triangles can you make on a circular pegboard that has nine pegs?

Putting Two and Two Together

Age 7 to 11
Challenge Level

In how many ways can you fit two of these yellow triangles together? Can you predict the number of ways two blue triangles can be fitted together?

Triangle Animals

Age 5 to 7
Challenge Level

How many different ways can you find to join three equilateral triangles together? Can you convince us that you have found them all?

Board Block

Age 5 to 7
Challenge Level

Take it in turns to make a triangle on the pegboard. Can you block your opponent?

Triangle Relations

Age 7 to 11
Challenge Level

What do these two triangles have in common? How are they related?

More Transformations on a Pegboard

Age 7 to 11
Challenge Level

Use the interactivity to find all the different right-angled triangles you can make by just moving one corner of the starting triangle.

Inside Seven Squares

Age 7 to 11
Challenge Level

What is the total area of the four outside triangles which are outlined in red in this arrangement of squares inside each other?

Folding Flowers 2

Age 7 to 11
Challenge Level

Make a flower design using the same shape made out of different sizes of paper.

Paper Patchwork 2

Age 5 to 7
Challenge Level

Have a go at making a few of these shapes from paper in different sizes. What patterns can you create?

Making Maths: Test the Strength of a Triangle

Age 7 to 11
Challenge Level

Have you noticed that triangles are used in manmade structures? Perhaps there is a good reason for this? 'Test a Triangle' and see how rigid triangles are.

Regular Rings 1

Age 7 to 11
Challenge Level

Can you work out what shape is made by folding in this way? Why not create some patterns using this shape but in different sizes?

Let's Investigate Triangles

Age 5 to 7
Challenge Level

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

Sticks and Triangles

Age 7 to 11
Challenge Level

Using different numbers of sticks, how many different triangles are you able to make? Can you make any rules about the numbers of sticks that make the most triangles?

Peg and Pin Boards

Age 5 to 11

This article for teachers suggests activities based on pegboards, from pattern generation to finding all possible triangles, for example.

Cutting Corners

Age 7 to 11
Challenge Level

Can you make the most extraordinary, the most amazing, the most unusual patterns/designs from these triangles which are made in a special way?

Repeating Patterns

Age 5 to 7
Challenge Level

Try continuing these patterns made from triangles. Can you create your own repeating pattern?

Triangle Shapes

Age 5 to 11
Challenge Level

This practical problem challenges you to create shapes and patterns with two different types of triangle. You could even try overlapping them.

Chain of Changes

Age 5 to 7
Challenge Level

Arrange the shapes in a line so that you change either colour or shape in the next piece along. Can you find several ways to start with a blue triangle and end with a red circle?

Cut it Out

Age 7 to 11
Challenge Level

Can you dissect an equilateral triangle into 6 smaller ones? What number of smaller equilateral triangles is it NOT possible to dissect a larger equilateral triangle into?

Triangle Island

Age 7 to 11
Challenge Level

You have pitched your tent (the red triangle) on an island. Can you move it to the position shown by the purple triangle making sure you obey the rules?

Board Block for Two

Age 5 to 7
Challenge Level

Board Block game for two. Can you stop your partner from being able to make a shape on the board?

Inside Triangles

Age 5 to 7
Challenge Level

How many different triangles can you draw on the dotty grid which each have one dot in the middle?

Matching Triangles

Age 5 to 7
Challenge Level

Can you sort these triangles into three different families and explain how you did it?

Colouring Triangles

Age 5 to 7
Challenge Level

Explore ways of colouring this set of triangles. Can you make symmetrical patterns?

Tri-five

Age 7 to 11
Challenge Level

Find all the different shapes that can be made by joining five equilateral triangles edge to edge.

Six to Four

Age 5 to 7
Challenge Level

Move four sticks so there are exactly four triangles.

Fraction Fascination

Age 7 to 11
Challenge Level

This problem challenges you to work out what fraction of the whole area of these pictures is taken up by various shapes.

Overlaps

Age 5 to 7
Challenge Level

What does the overlap of these two shapes look like? Try picturing it in your head and then use some cut-out shapes to test your prediction.

Cut and Make

Age 7 to 11
Challenge Level

Cut a square of paper into three pieces as shown. Now,can you use the 3 pieces to make a large triangle, a parallelogram and the square again?

Tessellating Transformations

Age 7 to 11
Challenge Level

Can you find out how the 6-triangle shape is transformed in these tessellations? Will the tessellations go on for ever? Why or why not?

Rectangle Tangle

Age 7 to 11
Challenge Level

The large rectangle is divided into a series of smaller quadrilaterals and triangles. Can you untangle what fractional part is represented by each of the shapes?

Tessellating Triangles

Age 7 to 11
Challenge Level

Can you make these equilateral triangles fit together to cover the paper without any gaps between them? Can you tessellate isosceles triangles?

Seven Sticks

Age 5 to 7
Challenge Level

Explore the triangles that can be made with seven sticks of the same length.