Moon Phases

The moon is a natural satellite that orbits around the Earth. It takes 28 days for the Moon to complete one revolution around the Earth. This is the same amount of time it takes for the Moon to rotate on its axis one time. The moon reflects light from the Sun which is why it appears bright in the night sky. As the moon revolves around the Earth, we can see different portions of the moon reflecting the Suns light. This is why the Moon appears to change throughout the month. In this activity you will learn more about how the Moon reflects light and make a tasty model of the different moon phases.

Moon Phases

Watch as Miss Kate demonstrates how the Moon changes from a New Moon to a Full Moon and back again.


  • Oreos
  • Butter knife
  • Paper
  • Pens/colored pencils
  • Plate


  1. Slowly twist the Oreo apart. Scrape the frosting off one side of the cookie to match each moon phase.
  2. Use the guide the complete each phase.
  3. Arrange your moons on a piece of paper and label them.
  4. Where should the sun be on your model? Draw the sun!
  5. Eat the scraps!

For more information on this topic, check out the following websites:

“Moon Song”: Watch video and sing along to the song to learn the phases of the moon.

Phases of the Moon Interactive (McGraw Hill): Use the interactive to explore how the moon revolves around the Earth.

“What would happen to the Earth if the Moon didn’t exist?”: Read an article to learn about the importance of the Moon.

Classroom Teachers! Download the student worksheet and instructor guide to complete activity with your students.

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