Idea for Ecology Pyramids foldable! (Okay, I know, this particular pic is for a food chain/web, and, yes it's got some gross errors, but I like the overall idea for the foldable.) For each side: Energy Pyramid, Numbers Pyramid, & Biomass Pyramid! I like it! You could also do something like food "webs" (trophic levels) for 3 different biomes! Compare and contrast!
The latest Review Qubes game for Biology is "The Biosphere". This fun paper dice game provides up to 72 review questions on food chains, food webs, ecological pyramids, biogeochemical cycles, biodiversity and more!
3D Ecological Pyramid Model Lesson: Biomass, Energy and Food Chain from The Sci-Lander on TeachersNotebook.com - (10 pages) - Students will produce an ecological pyramid in this lesson that shows biomass, energy levels, and food chains.