• Quick retrieval from earlier learning (Heart, blood and circulation). Students answer on mini whiteboards.
• Show answers together and note who needs support in the main task.

1. Priya counts 16 pulse beats in 15 seconds. What is the pulse rate in beats per minute? → 64Prompt: How many lots of 15 seconds are there in one minute?
2. What do arteries do? (make urine / digest food / carry blood away from the heart / carry blood back to the heart) → carry blood away from the heartPrompt: "A" for arteries, "A" for away.
3. Blood and circulation: which statement is NOT true? (Blood in veins is blue. / Veins carry blood back to the heart. / Blood is always red; it is bright red with oxygen and darker red without. / Capillaries are tiny blood vessels where substances pass to and from cells.) → Blood in veins is blue.Prompt: One of these is a famous myth.

• Ask everyone to find their pulse, then jump for 30 seconds and find it again.
• Share the objective: Follow blood through the heart and lungs. Read the success criteria together.

• Work through the example out loud, saying why you do each step, not just what you do.
• Example: Following blood from the lungs to the body: where does blood go straight after the lungs?
• Step 1: lungs → pulmonary vein → left atrium → left ventricle → aorta
• Step 2: So the answer is: pulmonary vein
• Answer: pulmonary vein
• Pause after each step and ask a student to say what comes next.

• Do these together. Students try each step on whiteboards before you reveal it.
• Use the hints as prompts rather than giving the answer.

1. Following blood from the body to the lungs: where does blood go straight after the right atrium? (right ventricle / pulmonary artery / vena cava / lungs) → right ventriclePrompt: This side of the heart carries blood low in oxygen.
2. Why is the wall of the left ventricle thicker than the right? (It holds more blood / It pumps blood all round the body, so it needs more force / It pumps blood to the lungs only / It is older) → It pumps blood all round the body, so it needs more forcePrompt: Compare how far blood goes from each ventricle.

• Students work on the student sheet. Circulate and check the first two answers of every student early.
• Students who finish: write a question of their own for a partner, with the answer.

The 8 questions are on the student sheet below, with answers in the key.

• Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.

1. Humans have a double circulatory system. What does that mean? (blood passes through the heart twice on each full trip round the body / blood flows both ways in each vessel / we have two hearts / only half the blood reaches the lungs) → blood passes through the heart twice on each full trip round the bodyPrompt: One loop goes to the lungs, one to the body.
2. Following blood from the lungs to the body: where does blood go straight after the pulmonary vein? (left atrium / aorta / lungs / left ventricle) → left atriumPrompt: This side of the heart carries oxygenated blood.

Free online practice with hints and printable worksheets for this skill: eurekami.com/science/grade-7.