Chocolate Moon Cookies

I am excited to present this guest post written by Ann McCallum, author of the fantastic book, Eat Your Science Homework, Recipes for Inquiring Minds which is officially released August 6th! Ann is also the author of Eat Your Math Homework, Recipes for Hungry Minds. Ann has guest posted on Gravitybread before when sharing her recipe for Common Denominator Cupcakes. Thank you Ann for sharing your wonderful ideas about incorporating science and math in the kitchen!

 Get Down to Earth with Science and Food!

moon cookies2

Space may be the final frontier, but if you want to do something more down to earth, try heading to the kitchen for a tasty way to learn about science.

But first, let’s back up a par-sec. Why bother with science at home? Don’t kids get enough of that in school? Actually, the summer provides a golden opportunity for learning outside the classroom. It’s a chance for trips to museums and landmarks, family time, and home learning. Besides the fact that discovering science through food is FUN, it’s critical for kids to maintain a momentum for learning over the long weeks of summer. Really, if our goal for our children is to help create a love of lifelong learning, it’s important to encourage curiosity and discovery over the summer. Food is the perfect conduit.

Start by being curious. One of my favorite things to do in the summer is to gaze at the night sky. Maybe you are lucky enough to go camping or hiking. If you are outside a city, on a clear night you will notice the inky darkness is sprinkled with an amazing array of stars. And how about the moon? It may be a huge, glowing circle—or it may be merely a sliver. What are the phases of the moon? And what causes them?

Keep track of the moon phases for about a month. Research what’s happening and you’ll learn that it takes the moon approximately 29.5 days to orbit the earth and that the shape of the moon from earth is determined by how it lines up with the sun. For example, the angle of the sun, moon, and earth cause us to see a different portion of the moon while the rest stays in shadow.  Learn fascinating words like waxing (growing) or waning (shrinking) and gibbous or crescent. The really fun part of all of this is to tie it all back to food. Kids will have a ball making a model of the phases of the moon with chocolate sandwich cookies. Here’s how:

Chocolate Moon Cookies

  1. Take off the top portion of each chocolate sandwich cookie, exposing the icing part inside. You will not need these top pieces for the phases of the moon model.
  2. Use a table knife and the curved edge of a glass to carefully scrape off a portion of the icing to show each phase of the moon: full moon, waning gibbous, third quarter, waning crescent, new, waxing crescent, first quarter, and waxing gibbous.
  3. Put the cookie moon models in order and then test your tasters. Who can tell you the name of each phase of the moon?

While this is more an assembly activity, for some actual (and fun) science recipes such as Black Hole Swallow-Ups, Sedimentary Pizza Lasagna, or Atomic Popcorn Balls, please check out this latest book titled Eat Your Science Homework: Recipes for Inquiring Minds (Charlesbridge, 2014). Yum!



buyitnow Eat Your Science Homework: Recipes for Inquiring Minds


Author Bio

Ann McCallum is the author of several books for children including the “Eat Your Homework” series. She lives in Kensington, MD with her family. Please find out more at


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