Lesson Plan

Resources → Subject Notes → Physics → Notes
Lesson Plan
Grade: Date: 17/01/2026
Subject: Physics
Lesson Topic: Define density as mass per unit volume; recall and use the equation ρ = m / V
Learning Objective/s:
  • Define density as mass per unit volume and express it using ρ = m/V.
  • Convert between common units of mass, volume, and density.
  • Rearrange the density equation to solve for mass or volume.
  • Solve quantitative problems involving density, mass, and volume.
  • Identify typical densities of common materials and determine which is most dense.
Materials Needed:
  • Projector and screen
  • Whiteboard and markers
  • Balance scales and ruler/measure tape
  • Sample objects (metal block, wooden sphere, etc.)
  • Worksheet with practice questions
  • Calculator for each pair
  • Density conversion chart handout
 Introduction:
Begin with a quick demonstration: drop a metal block and a wooden block of similar size into water to observe which sinks. Review students' prior knowledge of mass and volume from previous lessons. Explain that by the end of the lesson they will be able to calculate density, convert units, and rearrange the formula to find missing values.
Lesson Structure:
  1. Do‑Now (5'): Mini‑quiz on calculating density from given mass and volume.
  2. Mini‑lecture (10'): Define density, present ρ = m/V, discuss units and conversions, show diagram of a block.
  3. Guided practice (12'): Work through the worked example together, emphasizing unit consistency and equation rearrangement.
  4. Hands‑on activity (15'): In groups, measure mass and dimensions of provided objects, compute volume and density, record results.
  5. Concept check (8'): Quick clicker quiz targeting common mistakes (unit mix‑up, wrong symbols).
  6. Independent practice (10'): Worksheet with three practice questions; teacher circulates for feedback.
Conclusion:
Recap that density links mass and volume and that correct unit conversion is essential. For the exit ticket, each student writes the density of a chosen material and one real‑world example of its use. Assign homework to complete additional density problems from the textbook and bring an everyday object to discuss its density in the next class.