Think grid Daily on Instagram: "Geometry is explored through sand by using it for sand art, creating geometric figures and patterns, or building mathematical models. Cultural practices like Angola’s Sona use sand for storytelling and teaching geometry through sand drawings. Physical principles can be demonstrated, such as using a taut rope and sticks to draw ellipses and circles in the sand, as shown in this Natural Math article. Sand can also be used as a medium to visualize scientific concepts