Grade 1 Math Unit 1

Operations and Algebraic Thinking: In this unit, students will progress towards fluency with addition and subtraction of numbers to 10 (1.OA.6) using strategies to advance them from counting all to counting on, which leads many students then to decomposing and composing addends and total amounts. They will represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), and act out situations, verbal explanations, expressions, or equations. They will understand the relationship between addition and subtraction and the meaning of the equal sign. Applying all of this knowledge and skill, students will use problem solving structures to solve addition and subtraction word problems within 10 (using both two and three whole numbers for addition) involving all situations using objects, drawings, and equations.