Lesson plan: Does a bag for life actually help? Life-cycle assessment with real data (ages 15–18)
A 60-minute lesson that uses published life-cycle assessment (LCA) data to work out how many times a reusable bag must be used, and weighs…
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Classroom plastic audit (ages 8–18, with a picture tally for 5–7)
A one-week, 12-category count of a class’s single-use plastic with a published weights table, the sums, and a three-swap action plan.
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Family plastic footprint calculator: how it works and the weights we use
The full method, per-item weights and country benchmarks behind our calculator, so families and classes can check every number.
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Science fair: Which shopping bag is strongest per gram? (ages 10–16)
A fair-test experiment comparing failure load and load-per-gram for five bag types, linked to published reuse break-even data.
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Science fair: How many fibres come off our clothes in a wash? (ages 11–16)
A two-session experiment capturing laundry microfibres on filter paper and comparing fabrics or wash settings.
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Science fair: What happens to plastic, paper and ‘compostable’ packaging over eight weeks? (ages 10–16)
An eight-week degradation trial in soil, water, sunlight and dark, with a photo log and an honest discussion of the ‘450 years’ myth.
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Convince your parents: 12 conversation cards
Twelve printable cards, each with a claim a child can make, the evidence sentence with its source, a reply to objections and a family…
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30-day Swap Challenge: day-by-day tracker
One swap a week for four weeks plus a wild-card, with daily ticks, weekly ‘did it stick?’ checks and grams avoided at the end.
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Where does my plastic go? A read-aloud story for ages 5–7
Bob the Bottle’s four journeys (bin, ground, recycling, refill) in a reading-age-7 story with four checked facts.
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Where does my plastic go? An explainer for ages 8–11
One bottle, four endings, and the answer to ‘if we recycle it, why is it still a problem?’, with six sourced facts.