Similar Triangles – Real-Life – 3 Stars In this activity, 2 teams compete to place 3 stars in a row on the game board. Click/Touch a grid square to go to the corresponding question. Click the ‘Answer’ box for the answer and again to return to the game board. Click the colour of the team to place a star in that square. This game has sound!

This game is flexible and can be run in a variety of ways: Teams could choose questions individually, with the opportunity for the other team to ‘steal’ if their answer is incorrect. A whole team may complete a question with one student being chosen to provide an answer. Individual students from each team may compete simultaneously for a quickest answer. Red/Blue team students can be paired. The teacher can then either assess which majority of a team got their answer correct fastest (using mini-whiteboards) or poll the class as to how many red/blue team members won within each pair, and therefore determine the overall winning team.

3 Stars

First team to get 3 stars in a row wins!

A B C D 1 1 2 2 3 3 4 4

How tall is the tree? 3 m 10 m 40 m (not to scale) 15 m Answer

How tall is the house? 20 m 10 m 2 m (not to scale) 6 m Answer

12 m Answer How far away is the person from the flagpole? 6 m 1.5 m Careful! (not to scale) 12 m Answer

12 m Answer A How far away is the school from A? The school is 4 m tall. 20 m A 60 m (not to scale) 12 m Answer

120 m Answer A How far away is the lighthouse from A? 60 m 10 m 20 m (not to scale) 120 m Answer

21 m Answer A How far away from A is the house? 3.5 m 1 m 6 m (not to scale) 21 m Answer

28 m Answer A How far away is the top of the house from the boy? 7 m Careful! (not to scale) Answer 28 m

How tall is the building? 2 m 7 m 63 m (not to scale) 18 m Answer

70 m Answer How far away is the lighthouse from the person? 30 m The person is 2 m tall 30 m 5 m Careful! (not to scale) 70 m Answer

480 m Answer How tall are the mountains? 60 m 500 m 3500 m (not to scale) 480 m Answer

54 m Answer A How far away is the top of the building from A? 36 m 9 m (not to scale) Answer 54 m

How tall is the building? 5 m 20 m 80 m (not to scale) 25 m Answer

How tall is the person? 5 m 4 m 4 m (not to scale) 2.5 m Answer

15 m Answer A How far away is the school from A? 3 m 2 m 10 m (not to scale) 15 m Answer

7 km Answer A How far away are the base of the mountains from A? 700 m (not to scale) Answer 7 km

105 m Answer A How far away is the top of the lighthouse from A? 30 m (not to scale) 70 m 105 m Answer

tom@goteachmaths.co.uk Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths.co.uk