Environment and Bones

Overview

Students investigate how environmental conditions can affect the skeletal system. Building on prior learning about bones, muscles, tendons and ligaments, they analyse real-world cases and use evidence to explain impacts and suggest realistic responses.

Learning intentions

Students will:

• Explain how environmental factors can affect bone growth, strength and repair.
• Apply knowledge of the skeletal system to real-world case examples.
• Distinguish between a direct cause, a biological effect and a possible response.
• Communicate a supported explanation using scientific vocabulary and evidence.

Success criteria

• I can identify the environmental factor in a case study.
• I can explain how it affects bones or the skeletal system.
• I can use evidence to connect the cause with the effect.
• I can suggest a practical response and explain how it may help.

Curriculum links

• Science — Biological Science: how organisms meet their needs and respond to environmental conditions.
• Science — Biological Science: evaluating ways humans can support health and wellbeing through informed actions.
• Nature of Science: communicating scientific explanations and using evidence to support ideas.
• Key Competencies: thinking; managing self; participating and contributing; using language, symbols and texts.

Lesson structure (50 minutes)

Instructions for students: Please work quietly and independently. Use the word bank provided to help with your answers. Ask the relief teacher only if you need clarification about the instructions.

1. 0–5 minutes · Read and retrieval question. Read the learning intentions carefully. Then, in your exercise book, complete the silent retrieval question provided. Work quietly and think carefully.

2. 5–10 minutes · Read student information. Read the information about environmental factors and their effects on bones. Take your time to understand the key points.

3. 10–15 minutes · Worked example. Copy the worked example of one factor, its effect, and the body's response into your exercise book. Then complete the missing parts of the example using the word bank.

4. 15–35 minutes · Case-study worksheet. Independently complete the case-study worksheet. Identify the environmental factor, the biological effect on bones, the evidence from the case, and the possible response. Use the word bank and work quietly.

5. 35–42 minutes · Comparison task. Complete the comparison task by ranking two cases based on their environmental impact on bones. Write a justification for your ranking using cause-and-effect reasoning.

6. 42–47 minutes · Extension or unfinished work. Complete the extension task if you have finished early, or use this time to finish any unanswered questions from the worksheet.

7. 47–50 minutes · Exit response. Complete the exit response question and submit your work to the relief teacher.

Remember to work quietly and independently throughout the lesson. Use the word bank to help with your answers, and ask the relief teacher only if you need clarification on the instructions.

Resources

• the environmental impacts on bones slide deck
• the skeletal system environmental impacts case-study worksheet
• Board or shared digital display
• Student exercise books and pens
• Reliable classroom reference material supplied by the teacher
• Timer

Assessment

• During teaching, listen for accurate links between vitamin D, calcium absorption and bone health; question students who name an effect without explaining the mechanism.
• Check paired worksheets for a clear factor–process–outcome chain, appropriate use of evidence and realistic responses.
• Use the exit response to identify whether students can explain, rather than merely name, an environmental impact. Re-teach cause-and-effect language where needed.

Differentiation

• Provide a word bank, a completed model chain and sentence starters: “The environmental factor is…”, “This affects the skeletal system because…”, and “One possible response is…”.
• Pair students strategically and allow students to explain their reasoning orally before writing. Read case information aloud and provide enlarged, high-contrast text for students with literacy or visual needs.
• For EAL learners, pre-teach key terms with simple definitions and diagrams; accept labelled flow diagrams as an initial response before requiring full sentences.
• Extend confident students by asking them to compare two interacting factors, evaluate the strength of the evidence, or explain why a proposed response may not work in every situation.