Small but mighty! Learners explore the role of microbes in a healthy ecosystem. An engaging activity asks pupils to design an aquaponics system that demonstrates that healthy microbes are necessary to maintain the ecosystem.

Students study what worms need to survive in different environments. They study how worm composting improves soil and reduce waste. They discuss composting techniques and present a puppet show about a worm's life.

Students create a model of a salt marsh to discover the impact of pollution and human activities on water-based habitats including bays and the ocean. They recognize the relationship between natural and developed areas. Students impact...