This paper was prepared in response to the Conference Board of Mathematical Sciences recommendations for the preparation of secondary teachers. It shows how using trigonometry as a conceptual tool in spreadsheet-based applications enables one to develop mathematical understanding in the context of constructing geometric representations of unit fractions, a topic typically associated with elementary school curriculum. It that way, the paper shows how using technology, mathematical topics at different K-12 grade levels can be connected. (Contains 7 figures.)