Evans, JulieGalindo, EnriqueYoder, Gina Borgioli2018-12-202018-12-202018Evans, Julie; Galindo, Enrique; Yoder, Gina B.; [2018] I’m Hair to Help: A Problem-Based Project on Philanthropy and Linear Equations; Jean, Lee; Galindo, Enrique; Rigor, relevance, and relationships: making mathematics come alive with project-based learning[107-128]; National Council of Teachers of Mathematics978-0-87353-770-4https://hdl.handle.net/1805/18020en-USPhilanthropyLinear EquationsBook chapter