Most prealgebra courses contain a section on basic geometry. A student and I recently used objects and areas around the house to classify polygons and more specifically, types of triangles. It was fun to watch the student point at and identify the objects/types of triangles. In the student text, it mentioned that kitchen areas (sink, stove, refrigerator) are deliberately set up as scalene triangles, so we tested this theory, and found it to be true. This was a great way to reinforce the student's knowledge and by providing a hands on activity, made prealgebra fun.