Lesson Plan

• Write clear word equations for chemical reactions.
• Convert word equations into balanced symbol equations with correct state symbols.
• Balance equations using coefficients while keeping subscripts unchanged.
• Identify and correct common errors such as missing state symbols or wrong formulas.
• Apply the equation‑writing process to novel reaction descriptions.

• Projector or interactive whiteboard
• Handout/worksheet with practice reaction descriptions
• Periodic table posters
• Whiteboard and markers
• Calculator (optional)

Begin with a quick question: “How would you describe the reaction of iron rusting in words?” Connect this to students’ prior experience writing simple equations. Explain that today they will master the full process—from word equation to a balanced symbol equation with state symbols—so they can meet the IGCSE success criteria.

1. Do‑now (5'): Students write a word equation for a familiar reaction (e.g., iron + oxygen → iron oxide).
2. Mini‑lecture (10'): Review word vs. symbol equations, state symbols, and balancing rules using projected examples.
3. Guided practice (12'): Model the methane combustion conversion step‑by‑step, prompting students to suggest coefficients.
4. Pair activity (15'): Learners complete the three practice problems, writing word and balanced symbol equations with state symbols; teacher circulates for feedback.
5. Common‑mistakes discussion (5'): Present a deliberately incorrect equation; students identify and correct the errors.
6. Exit ticket (3'): Each student writes one balanced symbol equation with state symbols for a new reaction described verbally.

Summarise the four‑step process (identify, formulae, state symbols, balance) and check understanding through the exit tickets. Assign homework: complete a worksheet with five additional reactions, ensuring all state symbols are included.