The students researched bridge designs and made a plan before building the base and parts of their bridge. After initially failing a test with dictionaries, they fixed the bridge with small pieces, symmetry, X's and triangles so that it would successfully support weight on a final test.

1. making a strong bridge
by Grade 1

2. First, we researched using bridge
books, pictures and the Internet.

3. Second, we made a plan.

4. Next, we built the base.

5. Then, we started building other
parts.

6. Next, we tested it with
dictionaries, and the bridge fell
down.

7. We fixed it with small pieces,
symmetry, X’s and triangles.

8. Finally, we tested it, and it
worked!