This Addition & Subtraction Unit for Grade 2 includes lesson ideas, strategy posters, addition & subtraction worksheets, task cards (fact families, word problems, equations), and a test. In this unit students will learn addition and subtraction strategies (Counting On, Counting Back, Doubles, Compensation, Decomposing Numbers, Estimation, and Subtracting on a Number Line), recall facts up to 20, use mental math, and solve word problems.It is based on the expectations in the 2020 Ontario