Children are natural scientists full of curiosity. This curiosity allows them to ask questions about and to investigate their surroundings. Since science is not just a collection of facts to be learned, but rather investigations that need to be made, teachers should encourage that natural curiosity in the classroom. Luckily, the "Next…

Guided by the Next Generation Science Standards and elements of problem-based learning, four human-environment systems simulations are described in brief--carbon, energy, water, and watershed--and a fifth simulation on nitrogen is described in more depth. These science, technology, engineering, and math (STEM) education simulations illustrate…