The students should know that nine planets of very different size, composition and surface features move around the sun in nearly circular orbits. The students should know that some planets have rock and ice particles orbiting around them. The students should know that asteroids and comets are part of the solar system. Students will need a third-grade reading level. Students will need ability to use a computer mouse to point and click on choices.
Scientists know all there is to know about the solar system.
Earth is the largest object in the solar system. Stars and galaxies are part of the solar system. The sun is not a star. Engagement activity number one offers an opportunity to elicit student preconceptions. Working independently or in small groups, students will view an image accompanied by a question with three answer choices.