We use cookies to provide you with a great user experience. By using our site, you accept our use of cookies. You can review our cookie and privacy policy here.
  • Service & Support

    Contact Us

    Our Customer Service team is available from 8am to 6:00pm, ET, Monday through Friday. Live chat is available from 8am to 5:30pm ET, Monday-Friday.

    Email Customer Service

    International Sales & Service

    We serve educators in more than 170 countries worldwide. Create a quote request on our website or contact our International Sales Team.

    International Ordering
  • Shopping

    Login or register now to maximize your savings and access profile information, order history, tracking, shopping lists, and more.

  • Quick
  • My Cart

    My Cart

    Your Shopping Cart is currently empty. Use Quick Order or Search to quickly add items to your order!

Planetary Motion and Kepler's First Law

Planetary motion
In-Booth Demonstration

In-Booth Demonstration

Earth and Space Science

Earth and Space Science


Middle/High School

Play the role of astronomer as you predict the path of two planets orbiting the sun. This activity illustrates the process and results Johannes Kepler used to develop the laws of planetary motion. This activity supports 3-dimensional learning and builds toward the following:

  • NGSS Scientific and Engineering Practice: Using Mathematics and Computational Thinking
  • NGSS Core Idea: Earth and Space Sciences 1: Earth’s Place in the Universe; Earth and Space Sciences 1.B: Earth and the Solar System