Make NGSS come alive with this 4th grade science story about invisible forces, rhythmic motion, and the bridge that twisted itself to pieces. Aligned to 4-PS4-1, The Bridge That Shook Itself Apart is a narrative science lesson based on the true story of the Tacoma Narrows Bridge collapse — a dramatic demonstration of how waves carry energy and how increasing amplitude can lead to powerful (and dangerous) effects. This Story: The Bridge That Shook Itself Apart Standard: 4-PS4-1 Students explor