Earth didn't always have oxygen, so what caused the change that allows humans to live here? Learn about the change in O2 levels throughout geological history through an interactive graph. Each section offers greater detail on the changes...

Could you determine longitude based on measuring time? Early explorers used a longitude clock to do just that. Scholars learn about early exploration and the importance of the invention of the clock. Then pupils build their own longitude...

Fifteen detailed pictures and informative captions delve deep into the exploration of stars—their life cycle and importance in the universe. 

Now this is a clever approach to familiarizing aspiring astronomers with the phases of the moon! They first record the specific dates for ten special events in their lives. Then they use an online moon phase calendar to find out which...

Young scholars view a seven minute video called Gorilla in the Greenhouse. In this Earth day lesson, students review the history of Earth day. Young scholars work in groups to describe the life cycle of a plastic bag. Students...

Class members have an opportunity to walk in the footsteps of Romans with a skills instructional activity that asks them to use Google Earth to conduct research on famous Romans. The culminating project is a multimedia...

Keep within a water budget. Learners find out that less than 2.5% of Earth's water is available to drink—and that there is a fixed amount of water. Scholars read an interesting article comparing the available water to a game of Monopoly...

Young scholars investigate the history of Earth by creating a geologic time scale.  In this Earth History lesson, students practice sequencing events in their life as a way to get familiar with creating a time scale.  Young...

What do cereal, fog, and space shuttles have to do with newspapers? A collection of science investigations encourage critical thinking using connections to the various parts of the newspaper. Activities range from building origami seed...

An extensive investigation of the Earth's climate changes awaits your environmental science classes. This top-notch presentation begins by looking at the history of Earth's climate and then predicts the impact on each major terrestrial...

The Gulf of Mexico dead zone, an area of low oxygen that kills marine life, costs the United States $82 million every year. Young scientists research anoxic ocean environments then come up with a hypothesis for the cause of the Gulf of...

In this history of life worksheet, students complete a crossword puzzle by figuring out the vocabulary words associated with the 11 clues given. Then students review how paleontologists use fossils to learn more about past living things...

Here's a topic classes can really dig—the fossil record. Use the well-organized and thoughtful road map to take eighth graders back in time to unearth the answer. Learn how our climate has changed, and how organisms have...

Dig through the layers for a better understanding of fossils. Scholars learn that fossils form in layers of sedimentary rock. Pupils arrange virtual layers to show the fossil record of different species. Once the layers are correct, they...

Robert Hass's article "Rivers and Stories" underscores the importance of rivers in the development of civilization and the importance of reclaiming supposedly dead rivers and implementing policies that protect river health. Groups...

Assist your high school class with researching and applying the principles of gravity so they may further understand why Einstein is so widely recognized, even today. Individuals compare and contrast two different models that demonstrate...

Seventh graders examine how the different layers of rock show the history of the Earths surface.  In this rock lesson students divide into groups and complete an activity using clay.

Giving gifts has been a part of the human experience since modern man walked the earth. Upper graders explore the culture of gift giving in Mayan times through an artistic analysis. They analyze gift giving and palace life as seen on an...

Have your high schoolers learn about the modern history of Myanmar by close-reading an article about the city and people of the city Yangon. As they'll learn, the country is going through some dramatic transitions. After...

Using Google Earth, Google Docs, and other Google Tools, collaborative groups of seventh graders research and then create and share online newspapers reporting on the early development, geographical features, political issues, and...

Two lessons explore the possibility of living on the moon. First, scholars read various scenarios to identify which careers would best transfer to life in space. Finally, pupils examine a website to locate items made for outer space,...

Your young historians will learn all about the pharaohs, pyramids, and gods of ancient Egypt with these informational text worksheets, each of which are accompanied by hands-on, follow-up activities.

Young scholars study the physical properties of the Moon.  In this life on the moon activity students describe the ways life on the Moon would be different than on Earth. 

Students explore the Big Bang Theory and the Theory of Plate Tectonics. In this history of life lesson, students explain two ways the Theory of Plate Tectonics and the Big Bang are of direct benefits to humans.