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CChemistryBiologyS1 to S3Environment
Waste audit lab: reduce, reuse, recycle
Rwanda is known for clean streets and its ban on plastic bags. Find out how much waste a school makes and how much can be turned into something useful.
LevelS1 to S3 (and IGCSE)
TimeAbout 35 min
You usePercentages, masses
PriceFree: no account
🎯 Aim
To audit the waste of a school and plan how to reduce, reuse and recycle it.
You will learn to
- Classify waste as biodegradable or non-biodegradable.
- Calculate percentages and masses of waste.
- Explain composting, biogas and recycling.
- Describe the dangers of burning waste and of e-waste.
🧭 What to do
- Read the mass of each kind of waste.
- Choose what to do with each one: compost, biogas, recycle, reuse or landfill.
- Read how much is kept out of the landfill.
- Find the plan with the fewest warnings and the most waste saved.
- Answer the questions with the class data.
- Write your conclusion and download your lab report.
📋 The data
Daily waste of an example school.
🧠 Investigate: answer from the data
Type your answer and tap Check. Use 💡 Hint first; open the method only when you are stuck.
➕ Get more from this experiment
📝 Free
Print the worksheet (button above), download the data, and save your report. Teachers can project this page in class.
📦 Premium Lab Pack
1 000 RWF
- Project worksheet: audit and weigh the waste in your own school for a week
- Waste management problems
- Teacher guide and answer key
- Exam-style questions with marking scheme
👩🏫 For teachers
Use it as a practical when apparatus is missing, as homework, or as a project. Free lesson plans help you plan, teach and assess.
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