Knowing the name of a geometric shape is just the beginning of understanding the details about it. It’s important for children to look carefully at the characteristics of a shape, understand which attributes define it, and investigate its similarities to and differences from other shapes. Many of our shape puzzle games use pattern blocks. Pattern blocks were invented here at EDC! They are a common preschool math tool. They include multiple copies of six different shapes: a green equilateral triangle, a yellow hexagon, and four quadrilaterals—an orange square, a red trapezoid, a blue rhombus, and a beige narrow rhombus.