Construction – Triangles – Messenger! In this competitive activity, one student at a time acts as a messenger for their team of 2 or more students. Without running (!), they relay information about questions (posted around the room) to their teammates who then answer them. Students need to record the question letter and the answer so they can mark their work using the answer slide at the end of the activity. With the points system, students can attempt appropriate questions. You could choose posters/questions to include and delete others. (Clear plastic wallets around your classroom make it quick and easy to display posters.)

Printing To print handouts from slides - Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides - Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’

Messenger! Title Slide

10 In teams pick a messenger! It’s their job to collect questions for the rest of the team to answer. You can change who is the messenger but only one person is allowed to stand up at once and they can’t carry a pen or paper to the question! Each question is worth a different number of points! Record the question letter and your answer on a single piece of paper. After marking, the team that scores the most points wins! 10 Optional rules slide to show the class.

6 5 Question B Question A ? 6cm Construct an accurate triangle with side lengths: 6cm, 7cm and 10cm. Measure the three angles. ? 6cm What is the vertical height? (Hint: it’s equilateral) (1 dp)

copy of this rhombus with Question C Question D 8 7 ? Construct an accurate copy of this rhombus with 6cm side length. Measure the diagonal. 4cm 70° 110° 7cm Construct an accurate copy of this trapezium. Measure the top length. ? 6cm (1 dp) (1 dp)

6 7 Question F Question E ? 70° 5cm Construct an accurate triangle with side lengths: 5.5cm, 8.5cm and 9.5cm. Measure the three angles. 70° 5cm Construct an accurate copy of this triangle. Measure the side shown. (1 dp)

11 7 Question G Question H ? 3.5cm 55° 7.5cm 7cm 40° 120° Construct an accurate copy of this parallelogram. Measure the diagonal shown. Construct an accurate copy of this kite. Measure the side shown. (1 dp) (1 dp)

Construct triangle ABC. Question I Question J 6 7 ? Construct triangle ABC. AB = 6cm BC = 7cm & AC = 9cm Measure angle ABC. 70° 50° 6cm Construct an accurate copy of this triangle. Measure the side shown. (1 dp)

4 13 Question L Question K ? ? 5cm 108° 4cm Construct an accurate copy of this regular pentagon. Measure the length shown. Construct an accurate copy of this triangle. Measure the length shown. (1 dp) (1 dp)

6 5 Question N Question M ? 115° 35° 4.5cm Construct an accurate triangle with side lengths: 5cm, 8cm and 6cm. Measure the three angles. 115° 35° 4.5cm Construct an accurate Copy of this triangle. Measure the side shown. (1 dp)

Question Answer (within 0.5cm or 5°) Points A 5.2cm 5 B 35°, 45°, 100° 6 C 9.8cm 8 D 4.2cm 7 E 62°, 35°, 83° F 7.3cm G 5.8cm Question Answer (within 0.5cm or 5°) Points H 3cm 11 I 5.3cm 6 J 87° 7 K 8.1cm 13 L 5.6cm 4 M 8cm 5 N 38°, 50°, 92° Answers to display so students can mark their own or another team’s work.

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