Chapter 1 Investigation Worksheet: Worked Solutions

Try the investigation worksheet first. Pause where prompted, then watch each answer explained. Length: 3 min 23 s. Captions are on: use the CC button.

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• 0:00 · Introduction
• 0:11 · How to think
• 0:26 · Your turn: Questions 1 to 4
• 0:36 · Answers 1 and 2
• 0:52 · Answers 3 and 4
• 1:09 · Your turn: Questions 5 to 8
• 1:21 · Answers 5 and 6
• 1:37 · Answers 7 and 8
• 1:51 · Your turn: Questions 9 to 11
• 2:06 · Answers 9 and 10
• 2:23 · Answer 11
• 2:37 · Your turn: Questions 12 to 14
• 2:51 · Answers 12 to 14
• 3:09 · Well done