Home Learning: Animals Including Humans

Subject: Science | Year: 6

Estimated Time: 30-40 Minutes

Name: _________________________ Class/Set: ____________ Due Date: ____________

The Purpose

Why are we doing this? To consolidate your understanding of the human circulatory system by applying your knowledge to how the body transports oxygen and nutrients during physical activity.

Instructions

1. Label: In your exercise book, draw a simple diagram of the human heart. Accurately label the four main chambers: the Right Atrium, Right Ventricle, Left Atrium, and Left Ventricle.

2. Explain: Write a short "biography" of a single red blood cell. Describe its journey in a logical sequence, starting from the Lungs, moving through the Heart, out to the Body, and back again. Ensure you mention when the blood is 'oxygenated' and 'deoxygenated'.

3. Apply: Imagine you have just finished a 100m sprint. Write one paragraph explaining why your heart is beating faster than when you were sitting at your desk. You MUST include the following scientific terms: Oxygen, Carbon Dioxide, Nutrients, and Blood Vessels.

4. Analyse: Draw a simple T-chart (a table with two columns) to list three positive impacts of regular exercise on the circulatory system and three negative impacts of a poor diet (high in salt and saturated fat).

Success Criteria (Checklist)

☐ I have correctly identified and labeled the four chambers of the heart.

☐ I have described the full journey of a red blood cell, including the lungs.

☐ I have used the four required scientific terms in my paragraph about heart rate.

☐ I have completed the T-chart with at least three points in each column.

Challenge / Extension (Optional)

• Research: Use a book or the internet to find out what 'valves' do inside the heart and blood vessels. Write two sentences explaining their specific job in the circulatory system.

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⚠ TEACHER’S GUIDANCE & MARK SCHEME (DO NOT PRINT FOR STUDENTS)

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Teacher’s Post-Task Briefing

1. Model Answers / Expected Outcomes

• Task 1 (The Heart): Look for the correct orientation. The 'Left' side of the heart appears on the right side of the diagram. The ventricles should be at the bottom, atria at the top.
• Task 2 (Blood Journey):
  • Lungs (pick up oxygen) → Left Atrium → Left Ventricle → Body (drop off oxygen/pick up waste) → Right Atrium → Right Ventricle → Lungs (drop off CO₂).
  • Oxygenated: Lungs to Body. Deoxygenated: Body to Lungs.
• Task 3 (Heart Rate Application): The paragraph should explain that muscles need more energy during a sprint. The heart beats faster to pump more blood through the blood vessels to deliver oxygen and nutrients (like glucose) to muscles and to remove waste carbon dioxide quickly.
• Task 4 (T-Chart):
  • Positive (Exercise): Stronger heart muscle, lower resting heart rate, clearer arteries.
  • Negative (Poor Diet): Clogged arteries (cholesterol), high blood pressure, increased risk of heart disease.

2. Common Misconceptions to Flag

• The 'Blue Blood' Myth: Many students believe deoxygenated blood is actually blue because of how it looks through the skin or in diagrams. Clarify that it is actually a dark, dusky red.
• Heart Position: Some students still believe the heart is on the far left of the chest; remind them it is located centrally, slightly tilted to the left.
• Double Pump: Ensure students understand the heart is a 'double pump'—one side for the lungs and one for the rest of the body.

3. Classroom Discussion Starters (The 'Journey')

• The Pulse: If we can feel our pulse in our wrist or neck, what does that tell us about the pressure inside our blood vessels?
• Systems Link: How does the circulatory system 'partner up' with the digestive system to make sure our muscles can actually move?
• Evolution: Why might it be an evolutionary advantage for our heart rate to increase automatically when we are scared or running?