This is a great 2 part lesson on beam bridges. Students first test out materials to make girders, then build a bridge using the girders. Students will use the Engineer Desing Process to feel like real engineers.

Includes a video link and printables.

Materials needed:
6 empty toilet paper or paper towel tubes
Salt
Gravel
Popcorn kernels
Masking Tape
Large container to test in
Prediction sheet (included)

Materials for bridge (per group)
Cardboard or cardstock
Markers
Textbooks
Tape

Happy Engineering :)