Exploratorium
Exploratorium: Microscope Imaging Station: What's the Size of What You See?
In this lesson, you use microscope images to show how to use scale bars to measure very small things.
BioEd Online
Bio Ed Online: The Science of Microbes: Magnifying and Observing Cells
In this activity, students create slides of plant cells and observe them under a microscope. The lesson plan and PowerPoint slides can be downloaded. The included instructional video on cell observation is 20 min. 44 sec.
Department of Defense
Do Dea: Biology: Unit 3: Cell Structure
In this third unit of a Biology course, students learn about cells and cell structure. They compare prokaryotic and eukaryotic cells and learn about the specialized structures in a cell and what their functions are. They will also learn...
Florida State University
Florida State University: Pond Life
Explore the microscopic organisms that live in the freshwater ponds with this video collection. These video clips feature unicellular organisms, from under the microscope, showing off their daily activities. Collection includes videos of...
National Health Museum
Access Excellence: Modeling Limits to Cell Size
Why can't cells continue to grow larger and larger to become giant cells, like a blob? Why are most cells microscopic in size? Find out answers to these questions through this "hands-on" activity that simulates the changing relationship...