This is a power point that I use in 8th grade Science to teach about abiotic and biotic factors, as well as populations and communities. We have already touched on ecosystems at this point in the course, so you will see reference to that. I also would often have the students brainstorm all the things that they think are included in an ecosystem or community, before we start the power point. Then as we go through the slides they enjoy seeing all the factors they missed, and all the ones they were dead on with.
The power point itself includes vocabulary, flow chart, pictures, examples, a matching activity, and a great closing exercise where the kids can show a little creativity and some critical thinking.
My students always loved this topic and the discussions we would have while talking about the information in the power point.