2. How does a bridge work? A Mini Lesson: Bridges & Forces

3. How does a bridge work? –Let’s see what happens when a car drives across! A Mini Lesson: Bridges & Forces

4. How does a bridge work? –Let’s see what happens when a car drives across! A Mini Lesson: Bridges & Forces

5. How does a bridge work? –Let’s see what happens when a car drives across! –What about a more complicated bridge? A Mini Lesson: Bridges & Forces

6. Loads and Forces A Mini Lesson: Bridges & Forces

7. Activity: Build a Suspension Bridge Task –Build a suspension bridge Index cards, string, tape –Test your design-load the bridge to failure 20 minutes How much weight will yours be able to hold?!

9. Galloping Gertie

10. Activity Recap What makes a good bridge? What are some OTHER loads that could impact a bridge?? WindEarthquakeSnow and Ice