Building Bridges

Building Bridges

1st Grade · Science · 30 min

Lesson Preview

Learning Objective

I can build a bridge that can hold toy cars.

  • 1

    Engineers design bridges to help roads or railroads cross things like a river or valley.

  • 2

    Triangles are strong shapes that engineers use to build bridges because they don't bend easily when force is applied.

  • 3

    Suspension bridges use thick cables and tall towers to spread out the weight and hold up the bridge.