standards of mathematical practice
TRANSCRIPT
Today’s Goals• To explore the mathematical standards for
Content and Practice• To discuss and learn strategies for getting
students engaged in the Standards of Mathematical Practice
• To explore how we can use existing resources to focus on the Practices
Standards for Mathematical Practice
Make sense of problems and persevere in solving them
Reason abstractly and quantitatively
Construct viable arguments and critique the reasoning
of others
Model with mathematics
Use appropriate tools strategically
Attend to precision
Look for and make use of structure
Look for and express regularity in repeated reasoning
© Institute for Mathematics & Education 2011
SMP 1: Make sense of problems and persevere in solving them.
© Institute for Mathematics & Education 2011
Gather Information Make a planAnticipate possible solutions
Continuously evaluate progress
Check results
Question sense of solutions
SMP 2: Reason abstractly and quantitatively
DecontextualizeRepresent as symbols, abstract the situation
ContextualizePause as needed to refer back to situation
x x x x
P
5
½ Mathematical Problem
© Institute for Mathematics & Education 2011
SMP 3: Construct viable arguments and critique the reasoning of others
Use assumptions, definitions, and
previous results Make a conjecture
Build a logical progression of statements to explore the conjecture
Analyze situations by breaking them into cases
Recognize and use counter examples
Justify conclusionsRespond to
arguments
Communicate conclusions
Distinguish
correct logic
Explain flaws
Ask clarifying
questions
© Institute for Mathematics & Education 2011
SMP 4: Model with mathematics
Images: http://tandrageemaths.wordpress.com, asiabcs.com, ehow.com, judsonmagnet.org, life123.com, teamuptutors.com, enwikipedia.org, glennsasscer.com
Problems in everyday life…
…reasoned using mathematical methods
© Institute for Mathematics & Education 2011
SMP 6: Attend to precision
Comic: http://forums.xkcd.com/viewtopic.php?f=7&t=66819 © Institute for Mathematics & Education 2011
SMP 8: Look for and express regularity in repeated reasoning
© Institute for Mathematics & Education 2011
• Over emphasis on computation obscures understanding of the operations.
• Focus on behavior of the operations supports computational fluency.
Deborah Schifter
Content Goals
These standards of practice will be examined in the context of the following content standard:Understand properties of the operations.Grade 1: p. 14 Grade 2: p. 18Grade 3: p. 22 Grade 4: p. 28Grade 5: p. 33 (paragraph #2)
Video 1 – Will it always work?
CTB/McGraw-Hill; Mathematics Assessment Resource Services, 2003
Ms. Kaye’s 3rd Grade
Adding 1 to a Factor
Writing prompt: In a multiplication problem, if you add 1 to a factor, I think this will happen to the product…
Students’ Articulation of the Claim
• “The number that is not increased is the number that the answer goes up by.”
• “The number that is staying and not going up, increases by however many it is.”
• “I think that the factor you increase, it goes up by the other factor.”
Sample task
• Draw a picture for the original equation; then change it just enough to match the new equations.
• Make an array for the original equation; then change it just enough to match the new equations.
• Write a story for the original equation; then change it just enough to match the new equations.
Example: Original equation 7 x 5 = 35 New equations 7 x 6 = 42
8 x 5 = 40
Frannie’s Story Context
There are 7 jewelry boxes and each box has 5 pieces of jewelry. There are 35 pieces of jewelry altogether.
7 x 5 8 x 5
EightSeven boxes with five pieces of jewelry in each box
35 pieces of jewelry+ 5 pieces of jewelry40 pieces of jewelry
Jewelry Boxes
7 x 5 7 x 6 sixSeven boxes with five pieces of jewelry in each box
35 pieces of jewelry+ 7 pieces of jewelry 42 pieces of jewelry
Jewelry Boxes
Other Stories
• Baskets of bouncy balls• Tanks with salmon eggs• Baskets of mozzarella sticks• Rows of chairs
Explain how the array changes from 7 x 5 to 8 x 5 and from 7 x 5 to 7 x 6.
Making Sense of Multiplication
Where to find rich tasks.
http://www.insidemathematics.org/
http://www.rda.aps.edu/mathtaskbank/start.htm
http://www.galileo.org/math/MathProblems.html
http://balancedassessment.concord.org/tasksalpha.html
http://illustrativemathematics.org/
Rich Problems Worksheet
• Read through the tasks on the Rich Problems worksheet
• With a partner discuss what similarities you see in these problems
Creating open ended questions
• With a partner choose an upcoming topic you will be teaching.
• Create 3 open ended questions to engage your students?
• For each questions what Math Practices would you expect your students to be engaged in?