Have you ever wondered what happens to the different stars in the night sky as they get older? The Star in a Box application lets you explore the life cycle of stars. It animates stars with different starting masses as they change during their lives. Some stars live fast-paced, dramatic lives; others change very little for billions of years. The app visualises the changes in mass, size, brightness and temperature for all these different stages.

This lesson teaches students how to summarize argumenative articles and find connections in the authors' arguments and purposes.

This article provides elementary school teachers with background knowledge about science concepts needed to understand the first of seven essential principles of climate literacy--the sun is the primary source of energy for our climate system. Graphs, diagrams, and oneline resources provide more background for the teacher. The article appears in a free online magazine that focuses on the seven essential princples of the climate sciences.

This book list contains children's books that have been screened for accuracy in depicting scientific concepts. Each book's content is briefly described and its cover pictured. The topics of the books support learning in Grades K-5 about the issue's theme. The list appears in the free, online magazine Beyond Weather and the Water Cycle, which focuses on the essential principles of climate literacy.

Science Phenomena: HS Physical Science - Energy (Phys 2.1, 2.2) - Supercooling occurs when the temperature of a liquid is lowered below the freezing point without forming a solid. In the case of water it needs a seed crystal or a nucleation site to start forming ice. If the water has been filtered through reverse osmosis or chemical demineralization it can be safely cooled below the freezing point. Simply shaking the bottle forms solid ice.

This interactive activity produced for Teachers' Domain shows the relationship between tectonic boundaries and the locations of earthquake events and volcanoes around the world.

This illustration from Evolution by Monroe W. Strickberger shows the remarkable similarities between the bones in the forelimbs of various tetrapods, all of whose limbs serve very different functions.

This infographic outlines three common types of election disinformation that are likely to circulate on social media during election cycles in the United States. It also includes tools and tips for locating credible information in your state or district.

This illustrated essay from the NOVA Web site answers questions about irregularities in the tides.

This informational text introduces students to the geographic uniqueness of the North and South Poles. The text is written at a grade four through grade five reading level. This version is a full-color PDF that can be printed, cut and folded to form a book. Each book contains color photographs and illustrations.

This printable rubric is for teachers, administrators, field instructors and other educators who are evaluating the connection between the technology in a lesson plan and the learning goals of the lesson plan. This PDF includes details on reading the results and instructional moves to foster authentic learning through technology tools.

This webpage includes graphic models that help educators understand the Tripple E Framework and how to apply it.

This webpage includes three planning tools to help educators utilize the Tripple E Framework: the Triple E Walk Through Administrator Observation Tool, the Triple E Lesson Planning Template, and the Triple E Coaching Tool.

This informational text explores the relationships between tundra species: marsh marigolds, bot flies, and caribou. The text is at a reading level appropriate for second through third grade. It is a full-color pdf file that can be printed, cut, and folded to form a 2 1/8" by 2 3/4" book. It contains color photographs and illustrations and a glossary.

This informational text explores the relationships between various tundra species: marsh marigolds, bot flies, and caribou. The text is at a reading level appropriate for fourth through fifth grade. It is a full-color pdf file that can be printed, cut, and folded to form a 2 1/8" by 2 3/4" book. It contains color photographs and illustrations.

This informational text explores the relationships between various tundra species: marsh marigolds, bot flies, and caribou. The text is at a reading level appropriate for Kindergarten through first grade. It is a full-color pdf file that can be printed, cut, and folded to form a 2 1/8" by 2 3/4" book. It contains color photographs and illustrations.

This informational text explore how scientists are using robots to explore underwater mountain ranges in the Arctic Ocean. The difficulties associated with under ice exploration are explained. The text is written at a grade two through grade three reading level. This version is a full-color PDF that can be printed, cut and folded to form a book. Each book contains color photographs and illustrations.

This informational text explore how scientists are using robots to explore underwater mountain ranges in the Arctic Ocean. The difficulties associated with under ice exploration are explained. The text is written at a grade four through grade five reading level. This version is a full-color PDF that can be printed, cut and folded to form a book. Each book contains color photographs and illustrations.