Lynda Matchullis is a former middle-years and senior-years science teacher in Manitoba. She is a contributor to Success for All Learners: A Handbook on Differentiating Instruction and author of Senior Years Science Teachers Handbook: A Teaching Resource. She has worked as a divisional consultant supporting implementation of K–12 curricula in all basic subject areas, as well as literacy, numeracy, and establishing educational partnerships with community members. Lynda continues to collaborate with teachers through her work with the Manitoba Rural Learning Consortium. She believes a science teacher’s fundamental tasks are to work collectively to establish learning targets that are both content-based and skills-based, to use performance-based assessments, to moderate student work, and to differentiate instruction.