In Charles Tuttle’s AP Physics class, students recently applied core physics principles to a real-world engineering challenge: designing and building model bridges.
Working in teams, students constructed bridges using materials such as toothpicks and pasta, then prepared their designs for a class competition to determine the strongest structure.
Throughout the project, students demonstrated how the same physics concepts govern structures of all sizes—from classroom models to full-scale steel bridges. Just as important as the building process was students’ ability to clearly explain their thinking, articulating not only what they knew but how they applied those principles in ways accessible to others.
Designs varied based on engineering approach. Some students built Warren truss bridges, which rely on a repeating pattern of triangles to evenly distribute loads, with members alternating between tension and compression to maintain structural balance. Others constructed K truss bridges, which divide each panel into shorter segments that share the load, reducing buckling in compression members and enabling the structure to support greater weight.
The project exemplified a dynamic, hands-on learning environment where students were challenged to think critically, collaborate effectively, and connect theory to practice—supported by high expectations and expert instruction.
Check out Dr. Tara Christie Kinsey's perspective!