How are we connected to the patterns we see in the sky and space? Students develop models for the Earth-Sun and Earth-Sun-Moon systems that explain some of the patterns in the sky that they have identified, including seasons, eclipses, and lunar phases. They investigate a series of related phenomena motivated by their questions and ideas for investigations.

This unit is part of the OpenSciEd core instructional materials for middle school.

This interactive activity, in applet form, guides students through the motion of the sun and how they relate to seasons.

ESCOLAR aims to offer ALL elementary and middle-school students the opportunity to learn science within an engaging online environment.

Use this guide to help students learn the relationships between Earth, the Moon, and the Sun and solve the mystery of the shrinking moon.

Use this slide show to help students explore what a meteorite is and how can they help us better understand Earth and our Solar System.

In this unit, students will solve a mystery about changes in oyster larvae in the Salish Sea, causing oyster farmers to send their larvae to Hawaii until they grow stronger. They will look for clues in:
• activities and games, articles, and films that introduce the concepts of habitat and ecosystem
• structures and behaviors for survival in intertidal zone habitats
• the Earth-moon-sun interactions that drive the tides
• the importance of First Foods of the intertidal to first nations communities;
• how intertidal organisms interact across the Salish Sea food web
Afterward, they will arrive at the importance of a balanced carbon cycle in the health of the ocean and use a full scientific investigation to test if their local waters have a healthy pH for oyster larvae and other shelled creatures. Clear pathways of hope are woven into this complex issue, so students know that scientists and leaders are working to solve this problem - and kids can help!

Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it!

Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it!

Don't have solar glasses? Don't worry. Here are five unique ways to view an eclipse, including using a cracker!

Get creative during a solar eclipse and find out how to use the Sun as an artistic tool.

Learn how eclipses work by making your own with some clay, toothpicks, binder clips, a yardstick and don't forget the Sun!

Why does the Moon not always look the same to us? Sometimes it is a big, bright, circle, but, other times, it is only a tiny sliver, if we can see it at all. The different shapes and sizes of the slivers of the Moon are referred to as its phases, and they change periodically over the course of a lunar month, which is twenty-eight days long. The phases are caused by the relative positions of the Earth, Sun, and Moon at different times during the month.

Students work in teams of two to discover the relative positions of the Earth, Sun and Moon that produce the different phases of the Moon. Groups are each given a Styrofoam ball that they attach to a pencil so that it looks like a lollipop. In this acting-out model exercise, this ball on a stick represents the Moon, the students represent the Earth and a hanging lightbulb serves as the Sun. Students move the "Moon" around them to discover the different phases. They fill in the position of the Moon and its corresponding phase in a worksheet.

Humans have been on a mission to learn more about the red planet. Use this content guide to learn more about the challenges facing robotic explorers of Mars.

Students learn about the Earth's only natural satellite, the Moon. They discuss the Moon's surface features and human exploration. They also learn about how engineers develop technologies to study and explore the Moon, which also helps us learn more about the Earth.

This Motions of the Sun Lab is an interactive applet from the University of Nebraska-Lincoln Astronomy Applet project.

This collection of learning activities allows students to explore phenology, phenological changes over time, and how these changes fit into the larger context of climate change. Students explore patterns of solar radiation and seasons as well as phenological cycles and ecological affects of these patterns.

This activity engages learners to investigate the impact of Earth's tilt and the angle of solar insolation as the reason for seasons by doing a series of hands-on activities that include scale models. Students plot the path of the Sun's apparent movement across the sky on two days separated by three months of time.