Units / Unit A / Word Equations and Balancing (Conservation of Mass)
Word Equations and Balancing (Conservation of Mass)
Word ↔ balanced equations; Lavoisier conservation (A-GO3-SO6, SO1).
Lesson plan — step by step
- 1
Prepare
Chip counting or diagram tiles for balancing.
- 2
Set purpose
Display learning-intent slide; clarify success criteria and POS tags.
- 3
Teach
Walk through 9 slides in order—use talk tracks and questions in presenter notes.
- 4
Formative check
Balance three: Individual balance then peer verify.
- 5
Close
Exit slide; assign optional review of student notes online.
Materials
- Chip counting or diagram tiles for balancing.
Program of Studies tags
General outcomes
A-GO3
Specific outcomes
- A-GO3-SO6
- A-GO3-SO1
Teacher overview
Balancing as accounting for atoms.
Before class
- Chip counting or diagram tiles for balancing.
Common misconceptions
- Change subscripts to balance.
Formative checks (classroom)
Balance three
Individual balance then peer verify.
Look for: Coefficients only; atom count match.
Slide outline
- 1. [hook] Lavoisier and the balance · ~3 min
- 2. [learning-intent] Outcomes · ~2 min
- 3. [concept] Word equations · ~6 min
- 4. [concept] Skeleton → balanced · ~6 min
- 5. [worked-example] Combustion of propane · ~7 min
- 6. [guided-practice] Practice set · ~8 min
- 7. [safety] Lab conservation demo · ~3 min
- 8. [exit] Predict products · ~2 min
- 9. [sts] Industrial equations · ~4 min