How LEGO Car Rally Turns 6th Graders into Young Engineers

We designed a project‑based learning (PBL) program that requires a science teacher to spend five days a week, 47 minutes each day, teaching sixth‑grade students essential science and engineering knowledge and sparking their fascination.

The course, called LEGO Car Rally , abandons traditional exams; teachers grade every two weeks based on the performance of students' LEGO cars.

This typical engineering project lets students learn conservation of energy, energy conversion, kinetic and potential energy, as well as related mathematical concepts. Students must not only make the car move by gravity but also navigate two circular turns, a winding track, radar detection, and uphill and downhill sections.

Teachers also teach industrial design, emphasizing the iterative cycle of designing, building, testing, improving, and redesigning. Students are encouraged to fail repeatedly until they succeed, fostering resilience and motivation.

Project‑based learning is a means to ignite enthusiasm, but teachers must clearly list the required knowledge and ensure students truly master it; when done well, students learn mathematics, kinetic energy, potential energy, work, and more through the project.

The project’s outcome is standardized: teachers set criteria that guide students to apply the pre‑taught knowledge, ensuring consistent assessment.

LEGO car STEAM projects are popular because the components are readily available, requiring engineering design, physics (kinematics, dynamics), and, when adding smart control, programming—perfectly fitting interdisciplinary STEAM goals.