Help your students improve their math written response work with my CER (claim, Evidence, Reasoning) writing template. This product comes with sentence stems for each of the three categories to help enhance your students' writing. Being able to explain their mathematical problem solving process can always be a difficult concept for students. Make a routine out of problem solving by creating a Word Problem Journal where students will be able to practice their written response to word problem explanations and justifications. You will be able to offer feedback right inside their journals or use a sticky note to ask questions or clarifications.