Supporting Rigorous Mathematics Teaching and Learning. The Instructional Tasks Matter: Analyzing the Demand of Instructional T asks. Tennessee Department of Education Elementary School Mathematics Grade 1. Rationale – Comparing Two Mathematical Tasks. - PowerPoint PPT Presentation
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Supporting Rigorous Mathematics Teaching and Learning
Tennessee Department of EducationElementary School MathematicsGrade 1
The Instructional Tasks Matter:Analyzing the Demand of Instructional Tasks
Rationale –Comparing Two Mathematical Tasks
Tasks form the basis for students’ opportunities to learn what mathematics is and how one does it, yet not all tasks afford the same levels and opportunities for student thinking. [They] are central to students’ learning, shaping not only their opportunity to learn but also their view of the subject matter.
Adding It Up, National Research Council, p. 335, 2001
By analyzing two tasks that are mathematically similar, teachers will begin to differentiate between tasks that require thinking and reasoning and those that require the application of previously learned rules and procedures.
Counting Houses TaskMary, Nick, and Jean are collecting donations to support homeless people. Each student starts on a different path. The houses are side-by-side. Which student will visit the most houses and how do you know? Write an equation that describes each part of the students’ paths and explain which student visited the most houses and how you know.
Mary claims she sees a pattern in the Counting Houses Task that she can use to solve the tasks below. 9 + 8 = ___ 9 + 7 = ___ 9 + 6 = ___
• Will first grade students have opportunities to use the standards within the domain of Operations and Algebraic Thinking?
• What kind of student engagement will be possible with each task?
• Which Standards for Mathematical Practice will students have opportunities to use?
Common Core State Standards for Mathematics: Grade 1Operations and Algebraic Thinking 1.OA
Represent and solve problems involving addition and subtraction.
1.OA.A.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.A.2 Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
Common Core State Standards, 2010, p. 15, NGA Center/CCSSO
Common Core State Standards for Mathematics: Grade 1Operations and Algebraic Thinking 1.OA
Understand and apply properties of operations and the relationship between addition and subtraction.
1.OA.B.3 Apply properties of operations as strategies to add and subtract. Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)
1.OA.B.4 Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.
Common Core State Standards, 2010, p. 15, NGA Center/CCSSO
Common Core State Standards for Mathematics: Grade 1Operations and Algebraic Thinking 1.OA
Add and subtract within 20.
1.OA.C.5 Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
1.OA.C.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
Common Core State Standards, 2010, p. 15, NGA Center/CCSSO
Common Core State Standards for Mathematics: Grade 1Operations and Algebraic Thinking 1.OA
Work with addition and subtraction equations.
1.OA.D.7 Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.
1.OA.D.8 Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = ? – 3, 6 + 6 = ?.
Common Core State Standards, 2010, p. 15, NGA Center/CCSSO
The CCSS for Mathematical Practice
1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively.
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics.
5. Use appropriate tools strategically.
6. Attend to precision.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.
Common Core State Standards, 2010, p. 6-8, NGA Center/CCSSO
How do the differences between the Counting Houses Task and the Nine Plus a Number Task impact students’ opportunities to learn the Standards for Mathematical Content and to use the Standards for Mathematical Practice?
Linking to Research/Literature: The QUASAR Project
…Not all tasks are created equal - different tasks will
provoke different levels and kinds of student thinking.
Stein M. K., Smith, M. S., Henningsen, M. A., & Silver, E. A. (2000). Implementing standards-based mathematics
instruction: A casebook for professional development, p. 3. New York: Teachers College Press
Linking to Research/Literature
There is no decision that teachers make that has a greater impact on students’ opportunities to learn and on their perceptions about what mathematics is than the selection or creation of the tasks with which the teacher engages students in studying mathematics.
Research has identified characteristics related to each of the categories on the Mathematical Task Analysis Guide (TAG).
How do the characteristics that we identified when discussing the Counting Houses Task relate to those on the TAG? Which characteristics describe the Nine Plus a Number Task?
Tell if the scale will balance or tilt. If the scale does not balance, write which side will tilt down and why and indicate what would have to change to make the scale balance.
Use your solution to one problem to solve the second problem. The first problem is given as an example.6 + 6 = 12
6 + 7 = ___ Solve each set of problems by using the first problem to solve the second problem.7 + 7 = ____ 8 + 8 = ____ 5 + 5 = ___7 + 8 = ____ 8 + 9 = ____ 5 + 6 = ___ The problems below work in the opposite way as the ones above. How can you use the first problem to solve the second problem in each set of problems?7 + 7 = ____ 8 + 8 = ____ 5 + 5 = ___7 + 6 = ____ 8 + 7 = ____ 5 + 4 = ___
Addition Task DManipulatives/Tools available: Counters, cubes, grid paper, base ten blocksWrite a word problem for the number sentence. 8 + 6 = ___ Ask a question with your story problem so we know what we are supposed to figure out. Write a word problem for the number sentence. 14 – 5 = ___ Ask a question with your story problem so we know what we are supposed to figure out.
Compare the two word problems. How do they differ from each other?
Subtraction Task EManipulatives/Tools available: base ten blocks Solve this problem in two different ways: 32 - 17 After each way, write about how you did it. Be sure to include:• what materials, if any, you used to solve this problem;• how you solved it; and• an explanation of your thinking as you solved it. First Way: Second Way:
Adapted from Investigations in Number, Data, and Space, Dale Seymour, Menlo Park, CA, 1998.
Manipulatives/Tools available: base ten blocks Use base ten blocks to model the situations below. Write a number sentence for each problem. 1. Jim has 23 red pencils and 8 pencils are not sharpened. How many pencils
are sharpened?2. Jamie has 48 cookies and some of them are chocolate and some are
vanilla. 26 cookies are chocolate. How many cookies are vanilla? 3. 32 cookies are in the box and you ate some of them. Now there are 26
cookies left. How many cookies did you eat?
Explain how the problems are similar to each other. Explain how the problems differ from each other.
Manipulatives/Tools available: none Study the strategy of rounding the subtrahend in order to subtract all of the ones available and doing mental subtraction.
Manipulatives/Tools available: base ten blocks Circle the number in the ones place in each of the numbers below. 45 56 67 78 89
Circle the number in the tens place in each of the numbers below. 45 345 567 678 689
Circle the number in the hundreds place in each of the numbers below. 3,459 459 5,679 3,457 2,349
The CCSS for Mathematical Practice
1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively.
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics.
5. Use appropriate tools strategically.
6. Attend to precision.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.
Common Core State Standards, 2010
Linking to Research/Literature: The QUASAR Project
If we want students to develop the capacity to think, reason, and problem-solve then we need to start with high-level, cognitively complex tasks.
Stein, M. K. & Lane, S. (1996). Instructional tasks and the development of student capacity to think and reason: An analysis of the relationship between teaching and learning in a reform mathematics project.
Educational Research and Evaluation, 2 (4), 50-80.
Linking to Research/Literature
Tasks are central to students’ learning, shaping not only their opportunity to learn but also their view of the subject matter.
Adding It Up, National Research Council, p. 335, 2001