Save the future: A time mission
2 hours' reading
6 activities
During a school field trip, Iris and Orestes discover a time machine that transports them into a future where nature and the city face serious challenges. To return home, they must collect three keys that guide them through different missions: saving trees through recycling, lighting the city with renewables, and clearing the air by rethinking transport. Each success brings visible signs of hope — green shoots, glowing lights, cleaner air — showing that change is possible. The box offers an inquiry-based STEM journey where pupils use mathematics to explore real environmental issues and realise how everyday choices can shape a sustainable future.
For teachers
Learning objectives
- Help pupils connect mathematical reasoning—such as classification, scaling, estimation, percentages, and data analysis—to real-world environmental challenges.
- Develop understanding of how recycling, renewable energy, and transport choices influence the sustainability of cities and communities.
- Show how observation, calculation, measurement, and comparison can support informed decision-making and sustainable planning.
- Encourage pupils to explore how daily habits, such as waste management, energy use, and mobility, can create measurable environmental impact.
- Raise awareness of how individual and collective actions can reduce pollution, save resources, and contribute to a more sustainable future.
- Foster collaboration, critical thinking, and evidence-based decision-making through group discussion and problem-solving activities.
Activities
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Achievement badges
Pedagogical file
Lesson plans and implementation guidance

