MathUP is an online math program written by Marian Small that gives Ontario K–8 educators everything they need to implement an effective math program. Using the three-part lesson approach, MathUP helps students learn how to think about math in addition to doing the math. MathUP covers the entire Ontario math curriculum and features complete lessons including learning goals, differentiated instruction strategies, success criteria, and assessment. Mini-Lessons provide math background for teachers and parents. Digital and hands-on games provide practice for students. Number Talks provide ongoing practice with number and computational fluency. Brain Benders challenge students to use mathematical concepts to solve everyday problems.