This fun, hands-on activity helps early learners understand shape. Marshmallows and toothpicks are a great tool to build 2D and 3D shapes.

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For this activity:

1. Materials: small marshmallows, toothpicks, 2D and 3D shape name labels.
2. Discuss which 2D shapes would be easy to make using the marshmallows and toothpicks? Look at objects around the house to get some ideas of different 2D shapes. Discuss why it is difficult to make circles or shapes with curved edges. 
3. For older children, do the same activity with 3D shapes. 
4. If looking at 3D shapes, for an extra challenge, introduce the vocabulary of vertices and edges – the marshmallows are the vertices and the toothpicks are the edges!