Snack Science

Don’t just eat your food, make it fun!  These edible science projects are actually good enough to eat! 


Take a look at the fun snacks options below. They aren't just delicious; they teach us about the Earth’s moons, soil, and crystals. Pick one snack and turn it in! 

Activity Instructions

for Observers (Pre-K through 2nd Grade) or Explorers (3rd Grade through 5th Grade)

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Moon Phase Oreos

Introduction: Ever look out your window and see the moon. Is it a full moon tonight? Does the moon change shape? Does it grow? Watch this video of how the moon and the sun move around the earth and make it look like the moon is changing shape. Then make some great tastings moons. 


What you’ll need: 

  • 8 Oreos

  • Milk



  1. Take 8 Oreos and place them in a circle

  2. For 5 oreos take off the tops and shave the cream as follows:  to represent moon sizes

  3. For 2 oreos cut the top in half

  4. Place the Oreos in order of the moon phases 

  5. Enjoy the Oreos (and milk)


Why does this happen?

As the Moon orbits around the Earth we see bright sections of the moon at different angles. Moon phases depend on the Moon’s relative position to the Earth and Sun.

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Understanding Soil

Introduction: Ever wonder how things grow? What's in that soil anyway? Watch a video of what makes up soil: and then make a soil that is good enough to eat! 


What you’ll need: 

  • Chocolate chips and/or butterscotch chips

  • Chocolate pudding

  • Oreo cookies

  • Green food coloring 

  • Clear plastic cup

  • Shredded Coconut or Green sprinkles

  • Gummy worms(optional)


In the plastic cup, layer the food items in the following order:

  1. Bottom: A handful of chocolate chips and butterscotch chips, mixed. (This bottom layer represents the bedrock.)

  2. Lower-Middle: Chocolate pudding. (This lower-middle layer represents the subsoil layer.)

  3. Upper-Middle: Crushed Oreo cookies. (This upper-middle layer represents the topsoil layer.)

  4. Top: A couple gummy worms and a handful of coconut flakes and/or green sprinkles. (These represent the organic material at the surface level.

What makes up the world beneath us? Understanding soil and what it is made of is key to understanding how things grow. Soil is the loose upper layer of the Earth's surface where plants grow. Soil consists of a mix of organic material (decayed plants and animals) and broken bits of rocks and minerals. 


Rock Candy Crystals

Introduction: Got sugar? You can grow big, edible sugar crystals, commonly called “rock candy,” in your own kitchen.


Take a look at this fun experiment on how to make rock candy:


What you’ll need: 

  • 5 cups white granulated sugar

  • 2 cups water

  • Cake pop sticks or wooden skewers

  • Food coloring



  1. Dip one end of cake-pop sticks or wooden skewers in water and then roll them in granulated white sugar. The sugar should cover 2-3 inches of the stick. Let them dry completely. These are the seeds for the sugar crystal growth.

  2. Boil 2 cups water and 5 cups sugar until sugar is dissolved as much as possible. It should look like syrup. This is your supersaturated sugar solution.

  3. Let syrup sit until it is no longer hot and pour into glass containers. Add food coloring and stir.

  4. When colored syrup is completely cool, set the sugary end of the sugar-seeded cake pops or skewers into the syrup and let them sit for about a week.

  5. Gently move the sticks around occasionally, so they don’t stick to the crystals in the bottom of the glass. If the glass container gets too full of crystals, pour the syrup into a new container and move your stick into the cleaner syrup to grow more crystals. When the rock candy is done, drain the excess syrup and let them dry. Enjoy!


What is the science behind the candy?  A supersaturated solution is one that is forced to hold more atoms in water than it normally would.  Crystals start to form when a supersaturated solutions encounters a “seed” atom, causing the other atoms to come out of the solution and attach to the seed. In this case, the seed molecules were the sucrose molecules (the sugar) we dried onto the sticks.

Turn It In

Take a picture of your snack creation and upload it to Padlet!

If you haven't printed the bingo board page, please print it now. Cross off this activity square, since you've completed it.


You'll bring your bingo board print-out to the PS29 garden on  Sunday, May 23 between 2-4pm to collect your prize. If you're not in Brooklyn, email us and we will send you your prize.