There are many ways to make polyhedra from paper without scissors or tape. Sonobe polyhedra are a great first method to learn. Sonobe polyhedra are easy to make and put together, require a relatively small number of modules to achieve impressive results, and can be used to construct an amazing number of different polyhedra.

- Grades 2 through 12.
- Adults will find this activity interesting.

Amanda Katharine Serenevy

3.G.1 |
Understand that shapes in different categories may share attributes and that shared attributes can define a larger category. Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories. |

4.G.1 |
Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures. |

4.G.2 |
Classify two-dimensional figures based on parallel/perpendicular lines or angles of a specified size. Recognize right triangles as a category, and identify right triangles. |

4.G.3 |
Identify whether a plane figure is symmetric about a line and be able to draw the line of symmetry if so. |

This work placed into the public domain by the Riverbend Community Math Center.

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This work placed into the public domain by the Riverbend Community Math Center.