Flexi-cubes or infinity cubes are popular fidgeting toys used by children and adult alike. There are many ways of making a flexi-cube with or without hinges, using solid or flexible filaments etc.
In this module, you will learn how to design a flexi-cube. Here's a video that demonstrates this.
Standard Connections
CCSS.MATH.CONTENT.7.G.B.6 Solve real-world and mathematical problems involving area, volume and surface area of two- and three-dimensional objects composed of triangles, quadrilaterals, polygons, cubes, and right prisms.