The document discusses ecological footprints and how they can be integrated into primary school science curricula. It defines ecological footprint as a measure of human demand on Earth's resources compared to its capacity for regeneration. It notes that while developed countries pursue economic growth, this compromises environmental protection. The document then provides an example lesson plan for teaching students about ecological footprints. It involves activities like slicing an apple to represent Earth's limited land and resources. Students also take a quiz to measure their own footprint and discuss how to be more responsible. The goal is to empower students to take action on global environmental issues through developing critical thinking skills.