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Math education in the past…
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MATH IN THE PAST ü Only one method for solving problems ü Dependent on the textbook for questions and formulas ü Encouraged memorization of facts ü Focused on getting the one ‘correct’ answer ü Led to a lot of “math anxiety”
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*“people don’t like mathematics because of the way it is misrepresented in school. The maths that millions of school children experience is an impoverished version of the subject that bears little resemblance to the mathematics of life or work, or even the mathematics in which mathematicians engage.”
* Reuben Hersh, ‘What is Mathematics, Really?’ Parent 2018
*Arithmetic • “the study of numbers, especially the properties of the traditional operations between them — addition, subtraction, multiplication and division.”
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What is mathematics? math·e·mat·ics the study of the relationships among quantities (numbers), structure, space, and change A way of describing the phenomena of the world
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Math Skills • Skills are to mathematics what scales are to music or spelling is to writing. • The objective of learning is to write, to play music, or to solve problems—not just to master skills.
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* Standards for Mathematical Practice Overarching Habits of Mind of a Productive Mathematical Thinker 1. Make sense of problems and persevere in solving them 6. Attend to precision
Reasoning and Explaining
Modeling and Using Tools
2. Reason abstractly
and quantitatively 3. Construct viable arguments and critique the reasoning Parentof 2018 others
4. Model with mathematics 5. Use appropriate tools strategically
Seeing Structure and Generalizing 7. Look for and make use of structure 8. Look for and express regularity in repeated reasoning
Proficiency in Mathematics Communicating Reasoning – demonstrate ability to support mathematical conclusions
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Problem Solving and Modeling/Data Analysis – use appropriate tools and strategies to solve real world and mathematical problems
Concepts and Procedures – apply mathematical concepts and procedures
The ultimate goal of mathematics education is for all students to develop mathematical power to participate fully as a citizen and worker in our contemporary world.
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“WHERE” THE MATHEMATICS WORKS
Computational & Procedural Skills
Problem Solving DOING MATH
Conceptual Understanding Parent 2018
“HOW” THE MATHEMATICS WORKS
“WHY” THE MATHEMATICS WORKS
•
Some Old Ways of Doing Business
Lack of rigor
n Reliance on rote learning at expense of concepts n Lack of or excessive use of repetitious practice n Severe restriction to stereotyped problems lending themselves to mnemonics or tricks n Lack of quality applied problems and real-world contexts n Lack of variety in what students produce n E.g., overwhelmingly only answers are produced, not arguments, diagrams, models, etc.
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*Changing Expectations Content of Mathematics is NOT changing. Demonstrating and applying understanding of mathematics is
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*Learning Mathematics
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Rigor
focus on:
CONCEPTUAL UNDERSTANDING
PROCEDURAL SKILL AND FLUENCY
• More than getting answers • Not just procedures • Accessing concepts to solve problems
• Speed and accuracy • Used in solving more complex problems • Supported by conceptual understanding
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APPLICATION OF MATHEMATICS • Using math in real-world scenarios • Choosing concepts without prompting
Conceptual Understanding “When knowledge is learned with understanding it provides a basis for generating new knowledge.” • It is comprehension of concepts, operations and relationships • It helps students avoid critical errors in problem solving • It is being able to represent mathematical situations in different ways Adding it Up: Helping Children Learn Mathematics, 2001 Parent 2018
*
Solid Conceptual Understanding
•
Teach more than “how to get the answer” and instead support students’ ability to access concepts from a number of perspectives
•
Students are able to see math as more than a set of mnemonics or discrete procedures
•
Conceptual understanding supports the other aspects of rigor (fluency and application)
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C-R-A Concrete
Representational
Abstract 2x + 3 = 7 -3 -3 2x = 4 2 2 x=2
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Procedural Fluency •
Skill in carrying out mathematical steps and computations
•
Understanding concepts makes learning skills easier, less susceptible to common errors, and less prone to forgetting
•
Using procedures can help to strengthen and develop understanding
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• Teaching for Memorization: refers to committing the results of unrelated operations to memory so that thinking is unnecessary • Teaching for Automaticity: refers to answering facts automatically, in only a few seconds without counting, but thinking about the relationships within facts is critical Fosnot & Dolk, Constructing Number Sense, Addition, and Subtraction, pg. 98
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Students who memorize facts or procedures without understanding often are not sure when or how to use what they know, and such learning is often quite fragile. NCTM, Principles and Standards for School Mathematics, pg. 20
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39 + 17 = ??? 40 + 10 + 6 36 + 20 39 + 1 + 6 + 10 30 + 10 + 9 + 7
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97-19 • 98-20= • 97-10-10+1 • 19+1+70+7
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33 X 24 • 30 X 24 + 3 X 24 24X10X3 + 3X20+3X4 = 720+72
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33 X 24 33
24
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Algebra : Multiplying Binomials
x + 4
x
+
4x x2
*Sketch is not drawn to scale. Parent 2018
5
20 5x
2.4 X 3.2 3.2
2.4
3.2 x 2.4 = 7.68 Parent 2018
Inquiry Based Mathematics Instruction Starts with an engaging question Enables students to work cooperatively Emphasizes process over product Allows teachers to redirect with key questions and not answers ü Often uses a 3 part lesson ü ü ü ü
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Problem Solving in Mathematics Promotes critical thinking Allows for cross-curricular integration Should often be open ended Encourages students to follow specific models ü Uses different strategies for a variety problems ü ü ü ü
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• Tony and I are sharing a piece of cake. Tony is about to cut the cake at the mark indicated by the dotted lines. I told him this cut will make one of the pieces three times as big as the other. Am I right? How can I justify my answer?
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A Thought • “People who do not understand mathematics today are like those who could not read or write in the industrial age.” Robert Moses
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Why is understanding mathematics so important?
A gateway
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?
A locked gate
* “Mathematical know-how is not only one of the most important qualities for workers to possess in the future, it is critical for successful functioning in life”. … twenty-first-century citizens need mathematics. But the mathematics that people need is not the sort of math learned in most classrooms. They need to reason and problem solve, flexibly applying new methods in new situations. Mathematics is now so critical to that some have labeled it the ‘new civil right’.”
- Jo Boaler, 2008. Parent 2018
• Students who have failed . . .[might succeed] if we can first convince them that mathematics makes sense . . .
• . . . the ability to correctly remember and execute procedures . . . is a kind of knowledge that is fragile without deeper conceptual understanding of fundamental mathematical ideas. James Stigler in the MathAMATYC Educator.
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"Education ceases to be learning when the 3 R's are Read, Remember, and Regurgitate."
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*Consequences for Education *“Any math curriculum that emphasizes following directions to find a single correct answer is, by definition, preparing students for jobs that will not exist by the time they graduate.” *Frank Levy and Richard Murnane (2007) * The New Division of Labor: How Computers Are Creating the Next Job Market
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Doing Math at Home • Allow Students to Do the Math o Do not give answers, take the pencil or show your way
• Allow Students to have “productive struggle” o Grapple with ideas, ask questions and take breaks from tough problems
• Emphasize and praise effort rather than “smartness” o If you want your child to keep trying to solve a complex problem even when they have never seen one like it before….praise effort
• Ask students to explain their thinking, show their work with pictures and share what their revisions in thinking have been • Model all of the above in the context of everyday living o Math is problem solving, not just calculation—bring them into your world Parent 2018
“If we teach today as we taught yesterday, we rob our children of tomorrow.” John Dewey
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Together we make a difference!