Biology Paper 1
Heart and blood
Organisation training before the targeted original question drill.
Adaptive teaching card
Make it concrete
Analogy
Heart and blood is like a living system solving a small survival problem: each part has a job, and the answer depends on how those jobs connect.
Why now: An analogy helps when the definition feels abstract.
Do this: Match each part of the analogy to the science idea.
Learn it
The heart pumps blood in a double circulatory system.
Arteries carry blood away from the heart, veins carry blood back.
Red blood cells carry oxygen using haemoglobin.