Description:This engaging resource introduces students to the essential algebraic skill of substitution—replacing variables with numbers to evaluate expressions and solve problems. Perfect for middle school math or introductory algebra lessons, this worksheet includes: ✅ Clear explanations of substitution and its real-world applications ✅ Step-by-step examples to guide learners through the process ✅ Three scaffolded sections: Section 1: Single-variable substitution in basic expressionsSectio