======Sedimentary Rock Snacks======


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**Materials: **{{$demo.materials_description}}\\
**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
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**Alternative titles:** Edible Sedimentary Rocks
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====Summary====                   
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====Procedure====  
  - Grease an 8×8 inch baking pan.  
  - In a microwave-safe bowl, heat marshmallows and butter for 1–2 minutes, then stir until smooth.  
  - Mix in rice krispies cereal gradually until well coated.  
  - Press half of the mixture into the bottom of the greased pan.  
  - Add a layer of chocolate chips on top.  
  - Cover with the remaining rice krispies mixture and press lightly.  
  - Sprinkle mini M&M’s on top and press gently so they stick.  
  - Allow the mixture to cool for about an hour, then cut into bars.



====Links==== 
How to Make Sedimentary Rocks - Rainy Day Mum: 
{{youtube>tU5wYhmNNEw?}}\\

Making Edible Rocks - Pinal Geology and Mineral Museum: 
{{youtube>Ae88jJDZVqg?}}\\

📄 Edible Rocks For Kids - Sarah McClelland: [[https://littlebinsforlittlehands.com/rock-cycle-for-kids/]]\\

====Variations====
  * Use different candy pieces to represent various sediments.  
  * Add crushed cookies or pretzels for additional “rock fragments.”  
  * Create a three-layer version to show more complex sedimentary layering.



====Safety Precautions====
  * Supervise children when using the microwave or handling hot marshmallow mixture.  
  * Allow the mixture to cool before eating.  
  * Be mindful of food allergies to chocolate, marshmallows, or candy ingredients.




====Questions to Consider====
  * How does this snack model show the way sedimentary rocks are formed? (The different candy pieces represent sediments that are pressed together in layers.)  
  * What real-world processes are missing from this edible version of the rock cycle? (Long time scales, pressure, cementing minerals, and natural erosion.)  
  * How would metamorphic or igneous rocks be represented in a food-based model? (Metamorphic could be made by reheating and pressing ingredients, igneous by fully melting and letting them solidify again.)