Help Sarah Jane and her team put the solar system's planets back in order. Following the activity, read more about the sun, the Earth, and its moon, and then take a quick quiz to check for understanding.

[Free Registration/Login Required] In this unit children learn about the shapes and relative sizes of the Earth, Sun and Moon. Using models they learn how the three bodies move relative to each other and how these movements relate to...

A simulation illustrating Ptolemy's geometrical system of explaining the varying speeds and directions of the planets, sun, and moon.

A collection of ten hands-on science experiments for the entire family that will help you understand concepts in astronomy. Make an astrolabe, find the size of the sun and moon, build a lunar settlement, find out about meteoroids, shadow...

Eight hands-on lessons module in which students explore the characteristics of planet Earth, its moons, the sun, the solar system, planets, and the difference between science fact and science fiction.

A fantastic collection of information about the solar system. Includes information on all of the planets, the moon, the sun, asteroids, comets, meteoroids, and stars. Also find puzzles, a dictionary, quizzes, classroom activities, and...

This site provides a very interesting overview of our home planet, Earth. Content includes a focus on the atmosphere, the pull of gravity, and the active surface.

Here is a clear, simple picture of the solar system. Click on the names of the planets to learn more about each. Clicking on underlined terms takes you to more and more detailed scientific information.

[Free Registration/Login Required] This flipchart could be a unit plan. It is broken down to observing and comparing the day and night sky, comparing the properties of the moon and the sun, and observing the pattern of the moon phases.

This stunning site on the solar system gives a great overview of the planets and our sun. Learn about each object's size, vital statistics, and moons. Then go on for a more in depth look at these objects in the column on the left.

An introduction to our solar system: the planets, our Sun and our Moon. Students begin by learning the history and engineering of space travel. They make simple rockets to acquire a basic understanding Newton's third law of motion. They...

Biographies of people throughout history who looked at the sky and wondered what was there. Links to a detailed description of the planets and interactive activities.

[Free Registration/Login Required] The history of our calendar is presented through the passage of time with complete cycles of seasons in ancient history providing a starting place. Complete cycles of seasons are discussed and the...

In this site you can learn about stars, planets, satellites and a little history of Astronomy.

[Free Registration/Login Required] This flipchart demonstrates how the positions of the Earth, Moon and Sun cause phases of the Moon. It also illustrates the positions of the Earth, Moon, and Sun during a day and a month's time.

Get to know the twin of Neptune with this introduction to Uranus. Listen to the information in an audio file. Features include a printable version of the page, and vocabulary words are linked to a glossary of terms.

The BBC provides a general overview of the planet Earth. Content includes statistical information, a focus on the four seasons, moon information, and more.

Colorful, engagingly written information about astronomy and biology for Portuguese-speaking English language learners. Both subjects are broken down into a broad array of related subtopics. The biology section is particularly helpful...

This site from NASA's Space Place is geared towards early elementary learners. It offers detailed instructions for crafts and activities related to space, games and a teacher resource area. Students can also ask an expert at this site.

Young children can find facts about the Solar System, the Sun, meteorites, stars, galaxies, planets, our moon, comets, asteroids, and space exploration. Pages offer clear photos and bullet-point information, which is easy to read and...

How big is the Earth compared to the Sun? Is Mars bigger than the Moon? Seeing all bodies in the solar system larger than 200 miles in diameter side by side provides an excellent comparison and an interesting perspective.

This site offers an exploration and educational entertainment about the solar system. You will be able to study the history of the exploration of space, rockets, the first astronauts, space missions through a large archive of photos,...

Recognize the major constellations and learn about the sky during the different seasons of the year. You will also be able to measure the height of the mountains of the moon.

Play this creative puzzle game where the player views a solar system object that is all mixed-up. Try and find the matching parts of the photograph, and learn about the solar system in the process.