Math6-8
Writing and Evaluating Algebraic Expressions Guided Notes
By Timothy J.
A guided-notes packet for 7th graders on writing and evaluating algebraic expressions, with a short Key Concepts box followed by substitution and word-problem practice. Each question includes ruled space so students can show every step of their work.
Customize for your classroom
Teacher Guide & Tips
- Use as a 45-minute whole-class lesson: project the Key Concepts, model one substitution problem together, then have students complete the rest of the packet in pairs.
- Discussion question: Why does the expression -2.5m make sense for a diver's depth change after m minutes, and what does the negative sign tell us?
- Discussion question: In the salt-and-oil problem, why must you substitute the fractions 1 1/2 and 2 1/2 before multiplying, and what happens if you forget to distribute the coefficients?
- Scaffold for struggling readers: Provide a worked example of substituting d = 2 into 3d - 4, and encourage them to underline each variable and circle the operation before calculating.
- Extension for advanced students: Ask them to write their own real-world situation for 2/3p + 3r and evaluate it for two different sets of values; estimated time for the full packet is about 35 to 45 minutes.
Math6-8
Writing and Evaluating Algebraic Expressions Guided Notes
By Timothy J.
A guided-notes packet for 7th graders on writing and evaluating algebraic expressions, with a short Key Concepts box followed by substitution and word-problem practice. Each question includes ruled space so students can show every step of their work.
Customize for your classroom
Teacher Guide & Tips
- Use as a 45-minute whole-class lesson: project the Key Concepts, model one substitution problem together, then have students complete the rest of the packet in pairs.
- Discussion question: Why does the expression -2.5m make sense for a diver's depth change after m minutes, and what does the negative sign tell us?
- Discussion question: In the salt-and-oil problem, why must you substitute the fractions 1 1/2 and 2 1/2 before multiplying, and what happens if you forget to distribute the coefficients?
- Scaffold for struggling readers: Provide a worked example of substituting d = 2 into 3d - 4, and encourage them to underline each variable and circle the operation before calculating.
- Extension for advanced students: Ask them to write their own real-world situation for 2/3p + 3r and evaluate it for two different sets of values; estimated time for the full packet is about 35 to 45 minutes.