Year 9 Science · Unit 4 · Lesson 7
Challenge Worksheet
Learning Goals
Odd one out
Circle the item that does not belong in each group. Then explain why it doesn't fit in the answer column.
| # | Group | Your answer (odd one + reason) |
|---|---|---|
| 1 | Testimonial Before-and-after photo Peer-reviewed trial "Doctors hate this" | |
| 2 | CSIRO NHMRC Choice A product's own sales page | |
| 3 | "Flushes toxins" "Realigns your energy" "Boosts your aura" "Lowered blood pressure in a trial" | |
| 4 | Named study Large sample Control group Paid celebrity quote |
Evaluate the advert
An advert claims...
"PureGlow Detox Crystals: this all-natural ancient remedy, used by healers for over 2000 years, removes harmful toxins and chemicals from your body and boosts your immune system. Clinically proven! Sarah, 34, says: 'I felt amazing after one week, it's a miracle!' The big medical companies don't want you to find out. Order now and feel the difference in just 7 days."
(a) Identify at least four separate red flags in this advert. Name each red flag and quote the words from the advert that show it.
(b) The advert says it is "clinically proven" and includes Sarah's quote. Explain why neither of these counts as scientific evidence that the crystals work.
(c) Write a clear, step-by-step plan you would follow to fact-check this advert. Name at least two trusted sources, explain what evidence would change your mind, and state what conclusion you would reach if no real study could be found.
Wrap Up
In one sentence, what was the main idea of this lesson?