This compact, hands on educational tool makes the ratio between wheel and axle easy to see and study. It is designed for repeated classroom use and small group projects, helping students develop a practical understanding of simple machines and motion conversion. Key benefits Clear demonstration of wheel and axle ratio so students can observe and measure mechanical relationships. Durable construction using pp and metal materials for long term use and repeated handling. Compact size 10.5 x 10.5 x 14.5 cm for easy storage and transport between classrooms and activity spaces. Ideal as a DIY project for primary and secondary school students to encourage critical thinking and problem solving while reinforcing scientific concepts. Suitable for hands on lessons, experiments, and student presentations where a physical example improves comprehension. Function and performance Shows how rotational motion and mechanical advantage relate in a simple, visible format. Built to withstand frequent handling and classroom environments thanks to robust pp components and metal parts. Portable format supports flexible teaching setups and group work. Practical use scenarios Classroom demonstration: Use during a lesson on simple machines to show the relationship between wheel size, axle size, and mechanical advantage. Science fair project: Students can build experiments to compare ratios and report measured outcomes. STEM club or homeschool activity: Small groups can assemble and test principles of motion and force in hands on sessions. Materials and dimensions Materials: pp and metal. Size: 10.5 x 10.5 x 14.5 cm. This tool provides a reliable, tangible way to teach wheel and axle concepts while supporting student engagement and active learning.