In this video segment adapted from NOVA scienceNOW, learn about RNAi's potential to treat a wide range of genetic and infectious diseases.
How does energy flow in and out of our atmosphere? Explore how solar and infrared radiation enters and exits the atmosphere with an interactive model. Control the amounts of carbon dioxide and clouds present in the model and learn how these factors can influence global temperature. Record results using snapshots of the model in the virtual lab notebook where you can annotate your observations.
In this lesson designed to enhance literacy skills, students learn how to use fractions to interpret the nutritional information contained on food labels.
This video segment from Nature features ravens, the most intelligent birds in the crow family.
This video segment from NatureScene describes the characteristics of redwood trees at Redwood National Park.
In this lesson designed to enhance literacy skills, students learn about the advantages and disadvantages of the two basic forms of reproduction for the living things that practice them.
In this video segment adapted from NOVA, learn about the critical role of flowers in seed plant reproductive biology.
In this video segment from NatureScene, discover some reptiles in the swamp forest ecosystem at Congaree Swamp National Park.
Four Antarctica researchers describe how they keep warm while working in extreme cold, taking lessons from adaptations of wildlife.
The PhET Activities Database is a collection of resources for using PhET sims. It includes hundreds of lesson plans, homework assignments, labs, clicker questions, and more. Some activities have been created by the PhET team and some have been created by teachers.
This video segment from Kentucky Life describes how scientists control pollination of one of the few remaining American chestnut trees to develop blight resistant trees.
The discovery of restriction enzymes and their applications in DNA analysis has proven to be essential for biologists and chemists. This lesson focuses on restriction enzymes and their applications to DNA analysis and DNA fingerprinting. Use this lesson and its associated activity in conjunction with biology lessons on DNA analysis and DNA replication.
By examining the progress of a genetic eye disease, students learn about eyes, genetic disorders, and neurons in this case designed for clickers and large lecture sections.
This article assembles free resources from the Rocks and Minerals issue of the Beyond Penguins and Polar Bears cyberzine into a unit outline based on the 5E learning cycle framework. Outlines are provided for Grades K-2 and 3-5.
In this video segment from NOVA scienceNOW, meet researchers who are studying obesity and trying to understand the role that hormones and genetics can play in regulating appetite.
In this video from Science City, meet Romiya Glover, a chemist who develops products for HIV/AIDS testing. She describes the multidisciplinary nature of her job, how she decided to go into science, and how her work benefits others.
Learn how ravens benefit from sharing information and working together in this video segment from Nature.
Learn about root systems of trees in the Congaree Swamp National Park in this video segment from NatureScene.
Students learn about rotary encoders and discover how they operate through hands-on experimentation. Rotary encoders are applied in tools to determine angle measurements and for translations of angular motion. One common rotary encoder application is in a computer's ball-type mouse—the ball itself is a type of rotary encoder. In this activity, students experiment with two rotary encoders, including one from a computer mouse and one created using a LEGO® MINDSTORMS® NXT kit. They collect data to define and graph the relationship between the motion of the rotary encoder and its output.
In this video segment adapted from Northwest Indian College, Lummi Elders explain how a decline in the availability of salmon reflects a threatened environment that must in some way be protected.