Environmental Science: Make a Pop Bottle Ecosystem to show illustrate how the animals, plants, and non-living things in an environment all affect one another. Also includes a lesson on responsibility.
Physics: Solar Heating and Designing of a Solar Cooker
6 NGSS Aligned STEM Challenges designed specifically for fifth graders! STEM Activities Grade Next Generation Science Stan
Learning about volcanos - this volcano project lets you look inside a volcano eruption as it happens! Great science experiment for kids.
Science Fair Projects - Splitting Water into Hydrogen and Oxygen