Bio Ed Online: Sleep and Circadian Rhythms

Your class will not drift off to sleep during this episode on circadian rhythms. Though the narrator speaks quickly and continuously, he successfully explains our biological clock in a way that holds interest. Assign the viewing of this...

Charles A. Czeisler, MD, PhD, explains the body's "internal clock," how sleep patterns are impacted by spaceflight and microgravity, and strategies to counteract these impacts.

In this activity, learners 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.

Students read about six important discoveries in microbiology and put them on a timeline. They develop an understanding of how these discoveries connect to the invention of new scientific tools and technology. The instructional activity...

A pre-assessment at the beginning of a unit on microorganisms to see what students understand about microbes. The lesson and a set of slides can be downloaded. An included instructional video on microbes is 14 min. 44 sec.

Young scholars learn about the four major groups of microbes and their characteristics, and the roles microbes have in the world. The lesson and PowerPoint slides can be downloaded. The included instructional video on the four types of...

The invention of magnifiers that allow us to see things that are otherwise invisible to us has revolutionized science. In this lesson, students use several types of magnifiers to investigate magnification, and record their observations....

Middle schoolers prepare slides of and examine three types of common microbes using a light microscope, recording what they observe. The lesson and a set of PowerPoint slides can be downloaded. An accompanying instructional video is 22...

Students create models of microbes to scale, and compare their sizes and shapes. A 'Microbe Scaling Chart' is provided. The lesson and a set of PowerPoint slides can be downloaded. An accompanying instructional video is 6 min. 39 sec.

Students learn how to safely work with microbes in petri dishes, and how quickly they can develop into colonies. The lesson and a set of PowerPoint slides can be downloaded. An accompanying instructional video is 10 min. 24 sec.