OA Task 8b Operations and Algebraic Thinking Domain Number and Operations in Base Ten Cluster Represent and solve problems involving addition & subtraction. Use place value understanding and properties of operations to add and subtract. 2.OA.1 Use addition and subtraction within 100 to solve one-and two-step word problems Standard(s) involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g. by using drawings and equations with a symbol for the unknown number to represent the problem. 2.NBT.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. 2.NBT.9. Explain why addition and subtraction strategies work, using place value and the properties of operations. Take From- Change Unknown, Two-step Materials SF, Pencil, Paper, counters and base ten materials available Task Provide materials to the student. Read the problem to the student: 12 children were on the baseball field. Some children left the baseball field to play on the swings. Then 2 more children came to the baseball field. Now there are 8 children on the baseball field. How many children left to play on the swings? Solve the problem and use words, numbers or pictures to explain your reasoning. Continuum of Understanding Developing Strategy(ies) Used: Incorrectly solves the problem. Understanding Counting All Relies on counting as primary strategy for solving Counting On problem. Makes Tens Explanation is lacking in detail or non-existent. Basic Facts Complete Correctly solves the problem: 6 children left the baseball Creates easier or Understanding field known sums Successfully uses strategies such as making tens, creates Doubles easier or known sums, and basic facts. Doubles +/- 1, 2 Explanation is clear. Other: Standards for Mathematical Practice 1. Makes sense and perseveres in solving problems. 2. Reasons abstractly and quantitatively. 3. Constructs viable arguments and critiques the reasoning of others. 4. Models with mathematics. 5. Uses appropriate tools strategically. 6. Attends to precision. 7. Looks for and makes use of structure. 8. Looks for and expresses regularity in repeated reasoning.
OA Task 8b Domain Operations and Algebraic Thinking Number and Operations in Base Ten Cluster Represent and solve problems involving addition & subtraction. Use place value understanding and properties of operations to add and subtract. Standard(s) 2.OA.1 Use addition and subtraction within 100 to solve one-and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g. by using drawings and equations with a symbol for the unknown number to represent the problem. 2.NBT.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. 2.NBT.9. Explain why addition and subtraction strategies work, using place value and the properties of operations. Take From- Change Unknown, Two-step Materials SF, Pencil, Paper, counters and base ten materials available Task Provide materials to the student. Read the problem to the student: 12 children were on the baseball field. Some children left the baseball field to play on the swings. Then 2 more children came to the baseball field. Now there are 8 children on the baseball field. How many children left to play on the swings? Solve the problem and use words, numbers or pictures to explain your reasoning. Continuum of Understanding Developing Understanding Incorrectly solves the problem. Relies on counting as primary strategy for solving problem. Explanation is lacking in detail or non-existent. Strategy(ies) Used: Counting All Counting On Makes Tens Basic Facts Creates easier or known sums Doubles Doubles +/- 1, 2 Other: Complete Understanding Correctly solves the problem: 6 children left the baseball field Successfully uses strategies such as making tens, creates easier or known sums, and basic facts. Explanation is clear. Standards for Mathematical Practice 1. Makes sense and perseveres in solving problems. 2. Reasons abstractly and quantitatively. 3. Constructs viable arguments and critiques the reasoning of others. 4. Models with mathematics. 5. Uses appropriate tools strategically. 6. Attends to precision. 7. Looks for and makes use of structure. 8. Looks for and expresses regularity in repeated reasoning.
2nd%20task%20Opertations%20&%20Alg%20Thinking.docx