1. 3-D trigonometry BAA* Odd one out What is the same, what is different? Make 5 more Free choice (animation and printable) The matching sets Content covered Sort Select the three cards of a particular colour. Which card is the odd one out? Is there a reason why each card might be the odd one out? Repeat for a second colour if you wish. Select the two cards of a particular colour. Find all the things they have in common. Find all the things that are different about them. Repeat for a second colour if you wish. Select all the cards of a particular colour. Think up five more cards that could be part of this set. Repeat for a second colour if you wish. Choose your own cards and questions or use this slide to produce a paper version for use as a card sort. Matching cards are shown in the same colour, providing answers for the card sort activity.  Choose one of these sorting activities to develop a deeper understanding of this topic.

2. 3-D trigonometry BAA* Sort – Content covered BLength, area and volumeUse trigonometry to solve right-angled triangles ALength, area and volumeUse Pythagoras’ theorem in three dimensions A*Length, area and volumeUse trigonometry in three dimensions

3. 3-D trigonometry BAA* Sort – Odd one out Possible answers The others have side lengths that are either integers or irrational. The others have a length of 6. The others are triangles. The sides given on the others are all integers. The others are two- dimensional shapes. The others have some non-integer lengths. Why is it the odd one out? Can you find more than one reason? Why could the others be the odd one out? Can you find more than one reason?

4. 3-D trigonometry BAA* Sort – What is the same, what is different? Possible answers 63.4 Different: One is a rectangle. One is a triangle. Same: Both have a length of 6. Both have a right angle. Different: One is a diagram. One is an angle. Same: Both involve angles. Why are they the same? Why are they different? Can you find more than one reason?

5. 3-D trigonometry BAA* 10 53.1  36.9  Sort – Make 5 more How do you know all your cards match? How did you devise your cards? Which make the best cards? Why? Possible answers 67.4  6.96 cm 45  22.6  3.54 cm 16.25 cm²

6. 3-D trigonometry BAA* Sort – Free choice (animation and printable)  Use odd one out, same and different, or make 5 more before the card sort to scaffold access to this activity. 67.4 59.0 63.4 Can you add more cards to the sorted sets? Copy/paste one set of cards into your book. Why do they make a set? What other criteria could you use to sort the cards?

7. 3-D trigonometry BAA* Sort – The matching sets 67.4 59.0 63.4