We’re willing to bet it’s been a minute since you prepared slides in a science lab. If your kid’s back-to-school list includes a microscope, you probably need a refresher before beginning your search.

In the late 1800s to mid 1900s, microscopist C.R. Percival collected and prepared microscope slides that let scientists zoom in on the natural world. His slides capture the colors and textures of life ...

To use a light microscope to examine animal or plant cells. To make observations and draw scale diagrams of cells. Turn the coarse focus so that the stage is as close to the objective lens as possible ...