OA Task 4d Domain Operations and Algebraic Thinking Cluster Represent and solve problems involving addition and subtraction. Add and subtract within 20. Standard(s) 1.OA.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing with unknowns in all positions, e.g., by using objects, drawings and equations with a symbol for the unknown number to represent the problem. 1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Take From/Change Unknown Materials Cubes or counters, pencil Task Provide materials to the student. Read the problem to the student: The teacher had 15 pencils. She gave some pencils away. She has 10 pencils left. How many pencils did she give away? Write a number sentence that matches this story. Use a symbol for the unknown number. Once an equation is written, say: Solve the problem and show your thinking with pictures, numbers, or words. Continuum of Understanding Developing Understanding Incorrectly solves the problem with an answer other than 5. Relies on “counting all” as primary strategy for solving problem. Equation is inaccurate. Explanation is lacking in detail or non-existent. Strategy(ies) Used: and Error Counting All Counting On Tens Basic Facts Addition Creates easier or known sums Doubles Doubles +/- 1, 2 Other: Complete Understanding Correctly solves the problem: 5 pencils Successfully uses strategies such as basic facts, and/or the relationship between addition and subtraction Explanation is clear. Equation is accurate (e.g., 15 - * = 10; 10 + * = 15). 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. Trial
OA Task 5d Domain Operations and Algebraic Thinking Cluster Represent and solve problems involving addition and subtraction. Add and subtract within 20. Standard(s) 1.OA.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing with unknowns in all positions, e.g., by using objects, drawings and equations with a symbol for the unknown number to represent the problem. 1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Compare/Difference Unknown- “How many more” version Materials SF, Cubes or counters, pencil Task Provide materials to the student. Read the problem to the student: Emma has 12 bands. Aidan has 18 silly bands. How many more silly bands does Aidan have than Emma? Write a number sentence that matches this story. Use a symbol for the unknown number. Once an equation is written, say: Solve the problem and show your thinking with pictures, numbers, or words. Continuum of Understanding Developing Understanding Incorrectly solves the problem with an answer than 6. Relies on “counting all” as primary strategy for solving problem. Equation is inaccurate. Explanation is lacking in detail or non-existent. Strategy(ies) Used: and Error Counting All Counting On Makes Tens Facts Think Addition Creates easier or known sums Doubles Doubles +/- 1, 2 Other: Complete Understanding Correctly solves the problem: 6 bands Successfully uses strategies such as basic facts, and/or the relationship between addition and subtraction Explanation is clear. Equation is accurate (e.g., 12 + * = 18; 18 - * = 12). 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 6a Domain Operations and Algebraic Thinking Cluster Represent and solve problems involving addition and subtraction. Add and subtract within 20. Standard(s) 1.OA.1 Use addition and subtraction within 20 to word problems involving situations of adding to, taking from, putting together, taking apart, and comparing with unknowns in all positions, e.g., by using objects, drawings and equations with a symbol for the unknown number to represent the problem. 1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Compare/Bigger Unknown Materials SF, Cubes or counters, pencil Task Provide materials to the student. Read the problem to the student: Tim has 3 more French fries than Pam. Pam has 5 French fries. How many French fries does Tim have? Write a number sentence that matches this story. Use a symbol for the unknown number. Once an equation is written, say: Solve the problem and show your thinking with pictures, numbers, or words. Continuum of Understanding Developing Understanding Incorrectly solves the problem with an answer other than 8. Relies on “counting all” as primary strategy for solving problem. Equation is inaccurate. Explanation is lacking in detail or non-existent. Strategy(ies) Used: Trial and Error Counting All Counting On Makes Tens Facts Think Addition Creates easier or sums Doubles Doubles +/- 1, 2 Other: Complete Understanding Correctly solves the problem: 8 French fries Successfully uses strategies such as basic facts, and/or the relationship between addition and subtraction Explanation is clear. Equation is accurate (e.g., 5 + 3 = *). 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 9d Domain Operations and Algebraic Thinking Cluster Represent and solve problems involving addition and subtraction. Add and subtract within 20. Standard(s) 1.OA.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing with unknowns in all positions, e.g., by using objects, drawings and equations with a symbol for the unknown number to represent the problem. 1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Compare/Smaller Unknown- Version with “fewer” Materials SF, Cubes or counters, pencil Task Provide materials to the student. Read the problem to the student: Alexis has 9 ribbons than Jada. Jada has 18 ribbons. How many ribbons does Alexis have? Write a number sentence that matches this story. Use a symbol for the unknown number. Once an equation is written, say: the problem and show your thinking with pictures, numbers, or words. Continuum of Understanding Developing Understanding Incorrectly solves the problem with an answer other than 9. Relies on “counting all” as primary strategy for solving problem. Equation is inaccurate. Explanation is lacking in detail or non-existent. Strategy(ies) Used: and Error Counting All Counting On Makes Tens Basic Facts Think Addition Creates easier or known sums Doubles Doubles +/- 1, 2 Complete Understanding Correctly solves the problem: 9 ribbons Successfully uses strategies such as basic facts, and/or the relationship between addition and subtraction Explanation is clear. Equation is accurate (e.g., 18 - 9 = *; 18 = * + 9). 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 12b Domain Operations and Algebraic Thinking Cluster Work with addition and subtraction equations. Standard(s) 1.OA.8 Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. Materials SF, Cubes or counters, pencil Task Provide materials to the student. Read the problem to the student: Read the number sentence. What is the unknown number that makes the number sentence true? Write the number in the box. 5 - ☐ = 3 2 = 7 - ☐ 9 - ☐ = 1 4 - ☐ = 0 6 = 8 - ☐ Continuum of Understanding Developing Understanding Answers one or more items incorrectly. Complete Understanding Answers all correctly. Standards for Mathematical Practice 1. 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.