Apply properties of operations Technology and center games as strategies to add and subtract Assessments: Topic 5 Assessment Addition/Subtraction fluency quizzes Interdisciplinary Connections: Additional Resources: N/A (Math games) Pearson, enVisionmath2.0 Subject: Grade: Suggested Timeline: Mathematics 2 9 days 6: Fluently Subtract Within 100 Topic 6 Overview/Essential Understanding: Sometimes it is necessary to regroup when subtracting. The standard subtraction algorithm can be used to break the calculation into simpler steps, starting with the ones and moving to the tens. The inverse relationship between addition and subtraction can be used to solve and check subtraction. Bar diagrams, equations, and objects can be helpful when solving one and two-step word problems. Good math thinkers know how to think about words and numbers to solve problems. Topic 6 Objectives:
Apply properties of operations as strategies to add and subtract Technology and center games Assessments: Topic 5 Assessment Addition/Subtraction fluency quizzes Interdisciplinary Connections: N/A Additional Resources: (Math games) Pearson, enVisionmath2.0 Subject: Mathematics Grade: 2 Suggested Timeline: 9 days 6: Fluently Subtract Within 100 Topic 6 Overview/Essential Understanding: Sometimes it is necessary to regroup when subtracting. The standard subtraction algorithm can be used to break the calculation into simpler steps, starting with the ones and moving to the tens. The inverse relationship between addition and subtraction can be used to solve and check subtraction. Bar diagrams, equations, and objects can be helpful when solving one and two-step word problems. Good math thinkers know how to think about words and numbers to solve problems. Topic 6 Objectives:
2017-Math-Curriculum-Second-Grade.docx