Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Biology
Lesson Topic: define the terms monomer, polymer, macromolecule, monosaccharide, disaccharide and polysaccharide
Learning Objective/s:
  • Describe the hierarchical relationship among monomers, polymers, and macromolecules.
  • Explain the structural differences between monosaccharides, disaccharides, and polysaccharides.
  • Identify biological examples of each term.
  • Compare dehydration synthesis and hydrolysis in carbohydrate formation.
Materials Needed:
  • Projector and laptop
  • Printed handout with term table
  • Molecular model kits (sugar models)
  • Worksheet for matching and short‑answer tasks
  • Whiteboard and markers
  • Exit‑ticket slips
 Introduction:
Ask students to picture building blocks such as LEGO bricks to spark curiosity. Review prior knowledge that proteins are polymers of amino acids. State that by the end of the lesson they will be able to define each carbohydrate term and illustrate how they interrelate.
Lesson Structure:
  1. Do‑now (5'): Matching activity – students match terms to brief definitions on the board.
  2. Mini‑lecture (10'): Slide presentation of definitions and the glucose structural diagram.
  3. Hierarchy activity (10'): Small groups arrange term cards to build the monomer → polymer → macromolecule chain.
  4. Model building (10'): Using molecular kits, construct a monosaccharide, a disaccharide, and a short polysaccharide.
  5. Guided practice (10'): Complete worksheet with fill‑in‑the‑blank and short‑answer questions.
  6. Check for understanding (5'): Exit ticket – write one real‑world example for each term.
Conclusion:
Recap the key relationships between the terms and highlight the role of dehydration synthesis. Collect exit tickets as a retrieval check and assign an online quiz on carbohydrate terminology for homework.