Hickory Dickory Dock: The Biological Clock

Robins migrate because their food, the earthworms, are frozen in the ground in winter. Last in the series of four, the lesson focuses on bird migration, specifically the robin, and climate change. Pairs or groups discuss and analyze the...

Students investigate how the Earth's rotation affect the length of day. For this earth science lesson, students construct a sighting apparatus and record their observations over a few days. They analyze data collected and formulate a...

You don't have to be a scientist or even out of high school to contribute to scientific research. In the 12th lesson in the series of 21, scholars use this opportunity to add to the growing body of scientific knowledge and consider the...

Explore optics using an inquiry-based experimental approach! Young scholars use a set of materials to design and build a unit capable of focusing a beam of light. They experiment with different lenses to determine the best approach to...

What effects do temperature and carbon dioxide levels have on the zooplankton of Antarctica? This concluding lesson plan in a short unit on climate change and the ocean helps environmental scientists answer these questions. After...

The change in genetic makeup of a species over time is explored in this PowerPoint.  Facts around parent populations, the Hardy Weinberg principle, and selection under different circumstances contributing to an overall change in genetic...

What will you do with an extra 30 seconds? Scholars learn that December 22nd is 24 hours and 30 seconds long, which classifies it as the longest day of the year. An engaging video lesson analyzes Earth's orbit in combination with its...

Can someone really have a "biological clock"? Discover why many organisms on earth have an inherent awareness of where they are in the day's cycle.This video discusses animal adaptations, the earth's revolutions, and how light and...

Students complete several activities that stimulate their assessment of time. They consider the term 'biological clock' and how animals in the wild depend on their own internal clocks for survival.

How many hours should be in a day? One species of drosophila naturally prefers a 24.5 hour day, while another strongly prefers a 19-hour day. An animation and graph share data from each of these species when exposed to the typical light...