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Marshmallow Shapes | 3D Models

marshmallow shapes

This is a fun, engaging, and hands on way to teach kids about the 3D shapes. This hands-on activity, is a great way for kids to begin developing engineering skills.  They will love using marshmallows, or other appropriate treats, to create their own 3D models, so you may want to have extras on hand, as a reward for finishing the task!

Children will not only have fun while constructing 3D nets, they will also learn to follow instructions, and even gather the appropriate materials for the project.


  • Sturdy toothpicks are a great use, but popsicle sticks, or even straws will work.  Make sure to have enough for each child to build the required amount of shapes, plus extra in case of breakage.
  • Marshmallows (the mini kind) work great as the connecting material, but playdough or clay can be used if preferred/available.

Directions to Build Marshmallow Shapes:

  • Print out the activity sheets, and ensure each child has one to follow and complete.  Alternatively, have the image on a central screen to refer to, and use a math workbook to record answers/observations.
  • Have students collect the required materials from a central location, or give each student a container, paper plate, or bag containing the required materials.
  • Instruct students to use their materials to construct the various 3D nets, using the images that correspond to each shape shown, as a visual guide.
  • Once children are finished building their shapes, they can record the number of vertices, edges, and faces on the activity sheet, or in their workbooks, or perhaps even on a chart hung in the classroom, to guide further discussion.


Have fun using jellybeans, or other soft candies, that are connected to an upcoming holiday (hearts for Valentine’s Day, Bunnies for Easter or Spring, etc.).

This activity can be arranged so that kids can rotate through different stations to complete each 3D shape.  A separate area or table could be set up with the required materials, and the instruction sheet for one specific shape.  Once the students complete that shape, they move on to the next area.  This helps keep active learners, moving and engaged!

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