This activity helps students develop a sense of the relative size of quantities in time, length and mass. Learners rank their estimates of given measures in order from least to greatest and justify their decisions. The Teachers' Notes page includes suggestions for implementation, discussion questions, ideas for extension and support, printable cards (pdf), and a link to a related problem, "In Order" (cataloged separately). The solutions page shows that students used standard units of measure to make their comparisons.

Fly through a nebula and see what it might be like to be up close with a new star.

Our Solar System explores each planet and many elements from our solar system using 3D maps and renderings of planets, games, and videos. It follow a journey from our Sun out to the outer reaches with Pluto. It also includes link to many other tools and online games from NASA throughout the page. It is a fantastic resource for those of us exploring the solar system with our students.

Students dissect owl pellets. After dissection, they sort the bones and glue them onto a picture of a vole skeleton.

Learn about how to connect Google for Edu in your classroom with personalized, competency-based learning!

Denise Henry-Orndorff, an instructional technology coach from Google's Trainer program. She put together this amazing chart of Google Chrome Extensions for a variety of purposes and goals.

This edition is based on photos and art of amazing animals from around the world that students may not have heard of or seen before. Remember that these amazing puzzle parties can be completed on an individual level or they can be shared through a unique URL and a whole group can complete the puzzle.

In this problem students practice counting by twos as they explore the natural phenomenon that legs on creatures always come in pairs, laying the foundation for doubling and halving. A set of cards can be downloaded (pdf) and matched. The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, an expanded set of cards (pdf), and links to related activities (Noah and Number Tracks, both cataloged separately).

A magnet is used to make a paper clip "walk" on a paper plate. Students investigate how many paper plates through which the magnetic field will still pass.

This informational text introduces students to photosynthesis and lichens-plant-like organisms resulting from a symbiotic relationship between an alga and a fungus. 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 introduces students to photosynthesis and lichens-plant-like organisms resulting from a symbiotic relationship between an alga and a fungus. The text is written at a grade two through grade three reading level. This is a PDF containing the informational text and a glossary.

This informational text introduces students to photosynthesis and lichens-plant-like organisms resulting from a symbiotic relationship between an alga and a fungus. 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 informational text introduces students to photosynthesis and lichens-plant-like organisms resulting from a symbiotic relationship between an alga and a fungus. The text is written at a grade four through grade five reading level. This is a PDF containing the informational text and a glossary.

This informational text introduces students to photosynthesis and lichens-plant-like organisms resulting from a symbiotic relationship between an alga and a fungus. The text is written at a kindergarten through grade one 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 video accompanies the "Patterns in Adaptations" lesson plan and provides information on the animal in the lesson plan's habitat.

This video accompanies the "Patterns in Adaptations" lesson plan and provides information on the animal in the lesson plan's habitat.