For a fun home project this summer try finding some Vorticella to view under your microscope. You will want to collect some water from a fresh-water pond or stream. Generally the Vorticella will remain in clusters, so look for groups of swimming Vorticella. You will be able to view Vorticella best at 400x magnification. A microscope such as the child microscope 109L would work well.
Use a small eye dropper to place a droplet of pond water on a depression slide, then cover it with a cover slip. Have children draw what they see through the microscope. An entire workbook covering Protozoa with projects for kids can be found here.
