The Vehicles STEM Boost Kit is a hands-on engineering kit for one elementary student. Learners design, build, and test paper racers while exploring how variables affect vehicle performance, guided by bilingual student guides (English and Spanish). Students change one variable at a time—weight, shape, wheel position—and measure how each change affects distance and speed. This introduces the scientific method through a building challenge that keeps learners moving. All supplies are included—no additional materials or technology required. Works in classrooms, makerspaces, afterschool programs, camps, and home learning environments.