Teacher Monitoring Guide
Grade 8 · Cycle 1 · Week 4 — State Changes & Phase Transitions

Learning Goal

Students will construct and interpret heating/cooling curves to explain phase transitions in terms of energy input, particle arrangement changes, and temperature plateau during changes of state.

Station Checkpoints

Station 1 — Hook & Phenomenon
Look for: Students connecting the phenomenon to prior knowledge and generating testable questions
Common misconception: Temperature always increases when energy is added — use heating curve plateaus (melting and boiling points) to show energy goes into breaking intermolecular bonds rather than raising temperature
Station 2 — Investigation / Data Collection
Look for: Accurate data recording and identification of emerging patterns in the evidence
Common misconception: Melting and dissolving are the same process — compare melting (physical state change, pure substance) with dissolving (mixture formation, solute disperses throughout solvent)
Station 3 — Sense-Making
Look for: Students revising their model based on evidence collected during investigation
Common misconception: Sublimation is very rare — connect to everyday examples: dry ice, frost on a winter morning, freeze-drying of food

Exit Ticket Monitoring

Score Range Interpretation Next Step
18–23 pts Meeting target Extend with synthesis question
10–17 pts Developing Small group re-teach at day start
0–9 pts Needs support 1:1 intervention before next station

MTSS Tier 2 Supports

For students scoring below 10 pts on the exit ticket: use the sentence frames below during the next class's hook.