Your feeder has been planned, built, tested and improved. Today you become the engineer who explains the story of that design.
Real engineers do not only show the finished object. They explain who it was for, what they changed, what the evidence showed, and what they would try next.
Today's five parts of a design analysis:
- User need: what the birds needed the feeder to do.
- Design choice: one decision you made and why.
- Test evidence: what the watering-can or balance test showed.
- What changed after testing: what you changed and why.
- Next step: one thing you would try if you built it again.
Turn to your partner for thirty seconds: which of those five will be hardest to explain in one minute? Be ready to share one idea.
In your group, prepare a short talk about your feeder. You have about one minute to speak.
Your journal and prototype are your evidence — that is what real engineers bring to a meeting.
Cover these five points:
- User need: what the birds needed the feeder to do
- Design choice: one decision you made and why
- Test evidence: what the watering-can or balance test showed
- What changed after testing: what you changed and why
- Next step: one thing you would try if you built it again
Use your prototype and your Investigation Journal pages as evidence. On presentation paper, jot short cue notes for the five points if that helps you remember while you speak.
Each group presents its feeder. You may share with another group or with the whole class — your teacher will tell you which. Hold up the prototype. Tell us the user need, one design choice, what the tests showed, what changed after testing, and what you would do next.
Listeners: be ready with one thoughtful question about a design choice or the evidence. Strong questions help the next design as much as a neat build.
Think about the presentations you heard. In pairs, discuss: which design choice had the strongest evidence that the feeder holds seed, stays dry, or offers a stable perch, and why?
Be ready to share one idea with the class.
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