Proteins Unpacked

Overview

In this lesson, students explore what proteins are and why they are essential for the body’s growth, repair, and day-to-day functioning. They will use examples from food and biology to explain protein roles clearly.

Learning intentions

• Students will be able to define proteins as nutrient molecules used by the body.
• Students will explain how proteins support growth and repair of body tissues.
• Students will identify examples of protein-containing foods and relate them to body functions.
• Students will communicate their understanding using clear scientific language.

Success criteria

• I can define proteins in my own words.
• I can name at least three body functions proteins support.
• I can give at least three food examples that contain protein.
• I can link an example food to a specific protein function in the body.

Curriculum links

• Understanding life processes in humans, including growth and maintenance of the body.
• Using knowledge of nutrients to explain how the body functions and stays healthy.
• Using scientific vocabulary to describe structures and functions.
• Presenting explanations using evidence from observations and reliable information.

Lesson structure (60 minutes)

1. 0–5 mins: Starter—Protein snapshots Students view or read three short prompts (e.g., “repair after exercise”, “build muscle”, “make enzymes”). In pairs, they decide which prompt fits “proteins” and give a one-sentence reason.

2. 5–15 mins: Direct teaching—What proteins are Teacher explains proteins as nutrient substances made of amino acids, used by the body to build and repair tissues. Use a simple diagram: amino acids → protein structures → body tissues and enzymes. Provide a dyslexia-friendly option: a short, structured fact card and a read-aloud version.

3. 15–25 mins: Guided practice—Functions and wording Students complete a “function ladder” worksheet. For each function (growth/repair, enzymes, transport/signalling, immune response), they write a key phrase and then rephrase it into simpler language. Teacher circulates and models one example, focusing on precise but accessible wording.

4. 25–40 mins: Food-to-function task Small groups sort cards into categories: protein foods (e.g., meat, fish, eggs, beans, lentils, tofu, dairy) and match them to the most relevant function card. Groups must justify their match with a sentence starter (e.g., “Protein helps the body by…, so … is a suitable example”).

5. 40–48 mins: Mini-assessment—Explain it clearly Students complete a short “3–2–1” response in their books:

• 3 things proteins do
• 2 foods that contain protein
• 1 full sentence linking one food to one body function Provide a word bank and sentence stems for students who need support.

6. 48–55 mins: Whole-class feedback—Correcting misconceptions Teacher leads discussion on common errors (e.g., confusing proteins with carbohydrates for energy only; assuming proteins are only for muscle). Students revise one sentence from their response using class feedback.

7. 55–60 mins: Exit ticket—Define + exemplify Students submit an exit ticket with:

• a definition of proteins (one or two sentences)
• one example of a protein function in the body Teacher checks quickly for readiness for the next lesson in the unit.

Resources

• Dyslexia-friendly fact cards on proteins (short sections, large font, high contrast)
• Read-aloud audio or teacher script (for key definitions and function statements)
• Diagram of amino acids assembling into proteins (simple, labelled)
• “Function ladder” worksheet with sentence stems
• Food cards and function cards (cut-outs for sorting/matching)
• Word bank (proteins, amino acids, repair, growth, enzymes, immune system, transport, signalling)
• Short “3–2–1” response sheet
• Exit ticket slips or small template pages
• Timer and projector/printed prompts for starter

Assessment

• Formative: teacher observation during sorting and guided practice (checking that students can match foods to functions).
• Formative: “3–2–1” written response for definition and accurate linking of function to example.
• Summative check for this lesson: exit ticket definition and one correct protein function.

Differentiation

• Support: provide sentence stems, a word bank, and a read-aloud version of the key definition; allow oral rehearsal with a partner before writing.
• Support: offer a partially completed “function ladder” for students who need structure; use reduced-card sets.
• Extension: ask advanced learners to include a second link (e.g., “enzymes” plus how they relate to digestion or chemical reactions) and to justify why the function matters for health.
• EAL/SEN: use visual aids and consistent sentence frames; pre-teach essential vocabulary with examples (not just definitions). Allow responses in clear paragraphs or bullet points if handwriting is a barrier.

Extension (optional)

• Advanced extension for early finishers: write a short “Protein Myth vs Fact” paragraph addressing one misconception (e.g., “proteins only build muscle”) and replace it with a scientifically accurate explanation.