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Redesigning Bridges Worksheet

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Redesigning Bridges Worksheet

Year 8 Technology — Building Bridges: Engineering Skills (Lesson 6)

Bridge engineering illustration

🔍 Part 1: Analyse Your Test Results

Look at your bridge test data (photos, videos, or notes) and answer the questions below. Use the Word Bank to help you!

📚 Word Bank: tension  |  compression  |  load  |  stability  |  strength  |  collapse  |  support  |  weight  |  materials  |  structure

1. How much weight (in grams or kilograms) did your bridge hold before it failed or bent?

My bridge held _________ before it _________.

2. Use the two-column chart below to record what happened during testing.

✅ What WORKED well? (Sentence starter: "Our bridge was strong when...")

❌ What did NOT work? (Sentence starter: "Our bridge failed because...")

3. Where on the bridge did you notice the most damage or weakness? Circle all that apply:

The middle of the bridge (centre span)

The sides (supports/pillars)

The joints where pieces connect

The deck (top surface where weight was placed)

Other: _________________________

💡 Part 2: Brainstorm & Plan Your Redesign

Now it's time to think about how to improve your bridge! Work with your group, then complete your own plan below.

4. List 3 changes your group would make to improve the bridge. Use the sentence starter to help you.

Sentence starter: "We could improve the design by..."

Change 1:

Change 2:

Change 3:

5. Which ONE change do you think will make the biggest difference? Why?

Sentence starter: "I think the most important change is _______ because..."

6. In the box below, draw a simple sketch of your redesigned bridge. Add labels and arrows to show the changes you are making. Use technical words from the Word Bank!

💡 Tip: Use arrows to point to changes. Write labels like "stronger joint here" or "added support beam".

7. After listening to peer feedback, did you change any of your redesign ideas? What feedback was most helpful?

Sentence starter: "After hearing feedback, I decided to..."

8. Why is redesigning important in engineering? Choose the BEST answer:

Because engineers always get it wrong the first time.

Because testing and improving designs makes them safer and stronger.

Because it is a rule that engineers must follow.

Because building a bridge only once is too expensive.

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