Mechanics Unboxed: Unlocking Theory with Lego Models

ETH students likely had a childhood passion for mechanical toys, shaping their intuitive understanding of mechanics. However, at university, complex math and derivations can overshadow intuition for mechanics, particularly for first-semester students. While computer visualization aids understanding, it risks passive learning. In constrast, building Lego demonstrators offers hands-on experience crucial for understanding mechanics. Lego is ideal for swiftly constructing mechanical systems. The use of Lego demonstrators already proven successful in Technische Mechanik lectures. This project develops versatile Lego-based assigments for students to build models, bridging theory with practical application. Students work in small groups, developing mathematical models and replicating them with Legos, comparing analytical solutions to actual responses. Reports from these assignments contribute to their final grade. This project not only provides a unique learning opportunity but also broadens assessment, evaluating students› ability to relate real systems with simplified models, crucial for future engineering courses. It encourages a shift in learning attitude, enhancing understanding not just in mechanics but across their engineering studies.

The project aims at designing dedicated small groups assigments where students build Lego models mimicking systems discussed in the theory. Through this, the following objectives are targeted:

a) Foster intuition through hands-on approach and gamification;
b) build critical assessment on impact of modeling assumptions on the accuracy of the model and the mathematical solution procedures;
c) promote discussion, share of knowledge and interaction among students;
d) promote active engagment of students;
e) broaden the set of skills to be assessed;
f) smear the assessment towards the semester by lifting some pressure from the final exam.

The project will impact teaching and learning ETH at various levels.

For students, the project will significantly enhance their comprehension of modeling assumptions and encourage active correlation between mathematical model and intuitiion. This skills with be beneficial non only for Technische Mechanik, but for the whole course of their studies, as critical thinking on modeling and solution methods is an essential asset for successfull engineers.

At faculty level, the project could demonstrate the use of a simple platform as Lego for the implementation in many mechanics courses, whether for in class demonstrations of for broader projects. Concerted extensions of the project across different chairs could be envisioned.

The entire degree programme will benefit for this project by having more engaged and motivated students, shifting the old paradigm of classical theory + exercises education to a more comprehensive and active learning experience. This will have the potential of attracting more students to the program and strengthen the position of ETH on the international educational scene.