## Year 5 Properties of shapes Return to Primary Maths Resources

### Teacher resources.

Create and investigate problems involving complementary or supplementary angles, intersecting lines and angles at a point. Angles can be automatically displayed or measured using a protractor.

### Student resources.

Angles game

Each player draws 15 angles on a blank sheet of paper. They swap papers and estimate the size of each angle. Then they measure the angles with a protractor and compare the estimate and the exact measurement of the angles. Points are scored on the difference of the estimate and the actual size of each angle. The player with the lowest score wins.

Angles game

Player 1 chooses an angle e.g. 49°. Player 2 has to draw that angle without using a protractor. Player 1 measures the angle with a protractor. Player 2 scores the number of points that is the difference between their angle size and the intended one. For example, Player 2’s angle is measured to be 39°. So Player 2 scores 10 points (49°-39°). Take it in turns. The winner is the player with the lowest score.

Print out these triangles onto coloured card and follow the instructions. Children work in pairs to follow the instructions on the cards.

Pirates Lost Treasure

This video from Teachers TV is ideal for use in Key Stage Two mathematics lessons. It presents a short drama in which Pirate Kate has lost her map and needs to find her hidden treasure. She reads out a series of directions, each of which involves using her compass to face north, turning a set number of degrees and walking forward a number of metres in the new direction. The instructions are then repeated and displayed on screen and students are challenged to draw the treasure map. To find the buried treasure, students need to use their knowledge of geometry, degrees and angles.