## Pipes and pathways

Concepts | Problem-solving |
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### Resources

### Teaching notes

When solving these two puzzles, students tend to enjoy experimenting with different approaches. You could either distribute the worksheets to students, or show the PowerPoint files on an interactive whiteboard which can be drawn on in front of the group, involving everyone in the discussion.

For *Puzzling pipes*, you may wish to point out to students that most gas pipes are made up of straight lines and elbows (90° angles), so solutions containing curves are unrealistic, though they may be mathematically sound.