lesson
Offspring are not usually copies
1 · Learn
Living things produce offspring of the same kind. Offspring inherit characteristics from their parents but usually vary; a litter of puppies need not have identical markings. Some differences also arise from environment and experience.
A scar acquired during life is not the same as an inherited characteristic. Avoid assuming a single visible feature tells the full inheritance story. For this lesson, use fictional plants and animals rather than comparing families in the class.
2 · Worked example
Two seed-grown plants of the same kind may differ in height. Their inherited differences and growing conditions could both contribute; one observation alone cannot separate the causes.
3 · Your turn
Would different watering make height alone a fair test of inherited differences?
Check your answer
No. Watering is an environmental difference that could affect growth, so the comparison would be confounded.
4 · Apply your learning
Design a paper comparison of fictional seedlings grown with matching conditions and discuss what still cannot be concluded.
Adult guidance and safety
Do not ask about biological parentage, family resemblance or personal genetic traits. Keep examples fictional and non-sensitive.
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Check a calculation · Year 5 onward
Use this only when your teacher or adult allows a calculator for the task. Show your thinking first. It does not replace mental or written arithmetic and does not mark your lesson answer.
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Ask your teacher for support with the method and recording. A prediction is what you think might happen; an observation is what you actually see, hear or feel safely.
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