Help your students understand how simple machines make work easier with this investigation-based worksheet and answer key! Designed for middle school science (Grades 6–9), this resource guides students through hands-on experiments measuring mechanical advantage and efficiency of ramps, pulleys, levers, and wheelbarrows Investigating the Efficiency of… . What’s Included: Student Investigation Worksheet covering: Aim and background on simple machines, force, and efficiency Step-by-step metho