Project Guide · Science Exploration
Cookie Moon Phases
Model the changing visible portion of the Moon by shaping cookie filling into a sequence of familiar lunar phases.
What You Will Create
A flexible, hands-on build.
Model the changing visible portion of the Moon by shaping cookie filling into a sequence of familiar lunar phases. The guide can be adapted for families, classrooms, clubs, or drop-in learning spaces.
Science Exploration · Flexible group size · Easy to extend
Project Media
See the project take shape.
Project photo and video coming soon
Get Ready
Supplies and preparation
Supplies
Gather these materials
- Sandwich cookies
- Plastic knives or craft sticks
- Napkins
- Moon-phase chart
- Paper plates
- Labels or markers
Preparation
Before participants begin
Check food allergies and facility rules. Prepare a non-food option with paper circles or modeling dough.
Use clean surfaces and utensils, wash hands, and follow allergy guidance. Separate models used for display from food intended to be eaten.
Build Guide
Follow the steps
Test as you build. Small revisions are part of the process and help participants understand why the final design works.
1. Plan and prepare
Place eight cookies around the edge of a plate in a circle.
2. Build the foundation
Use the chart to identify the order of the major lunar phases.
3. Add the main feature
Twist each cookie open and shape the light filling to match one phase.
4. Test and adjust
Arrange and label the sequence from new Moon through the cycle and back toward new Moon.
5. Finish and reflect
Use a light source and a small ball to explain that phases come from changing viewing angles, not Earth’s shadow.
Keep Exploring
Try another direction
Use one of these extensions after the first version is working.
- Create the same sequence with paper circles.
- Track the Moon for several nights and compare observations with the model.
- Explain the difference between a lunar phase and an eclipse.
LEARNING CONNECTIONS
Ideas within the build
Learning Connections
Ideas within the build
Lunar phases, models, sequences, observation, spatial reasoning, and scientific explanation.
Facilitator Note
Make the process visible
Ask participants to predict what will happen, test one change at a time, and explain what they revised. Photograph early and final versions so the improvement process becomes part of the project story.
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