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Math Modelsprogression in the early grades
Becky Paslay2015 IEA Summer Institute
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Session 1 Focus
● Why Use Models?--The Research ● Models for:
o counting and cardinalityo adding / subtracting
● K-2 model progression● Enactive, Iconic and Symbolic Trajectory
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Session 2 Focus
● Sample Student Work
● Practice Categorizing
● Rubric Rough Draft
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Session 1Becky Paslay2015 IEA Summer Institute
4
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DMT Framework
http://dmt.boisestate.edu/
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Encouraging Multiple Models and Strategies
A Review of the Literature
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Bruner (1964)
Amplifiers of Sensory Capacities
(Iconic)
Amplifiers of Motor Capacities(Enactive)
Amplifiers of Ratiocinative Capacities(Symbolic)
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Encouraging Multiple Models and Strategies“The most important thing about memory is not storage of past experience, but rather the retrieval of what is relevant in some usable form. This depends upon how past experience is coded and processed so that it may indeed be relevant and usable in the present when needed.” (Bruner, 1964)
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Mapping Instruction
Generalized Modeling
Gravemeijer & van
Galen (2003)
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Encouraging Multiple Models and Strategies● Sociomathematical
norms for explanationso differento sophisticatedo efficiento acceptable
Cobb, 2000
http://youtu.be/fe2kolrcKSo
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Encouraging Multiple Models and Strategies● Realistic Mathematics Education (RME)
o Theory by Cobb, 2000o student’s models can evolve into the abstract
● DMT Frameworko Enactive - Iconic - Symbolico Brenerfur et al, 2015
● Model to “concretize expert knowledgeo Gravemeijer & van Galen, 2003
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Encouraging Multiple Models and Strategies
● longer-term memory● better understanding of concepts● “mapping instruction” versus generalized modeling
o step by step process with ready made manipulatives
o elaborate from own ideas, self-developed and reflect number sense understandings
(Brenderfur, Thiede, Strother and Carney, 2015; Gravemeijer & van Galen, 2003; Resnick & Omanson, 1987)
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Romberg & Kaput (1999)
mathematics is more like a banyan rather than a palm tree
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Shift from traditional math towards
human mathematical activity
Topics = Same Approach Changing
Math Worth Teaching
➔model building➔explore patterns ➔powerful analytical problem solving➔relevant➔invite exploration➔inquire➔justification➔flexible technology use➔creative attitudes, habits & imagination➔enjoyment and confidence
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Modeling StagesFosnot1 - Realistic Situation
2 -Computational strategies as students explain
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3 - Tools to THINK with…...
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Go Noodle! https://www.gonoodle.com/channels/gonoodle/mega-math-marathon
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Encouraging Multiple Models and Strategies
Different contexts generate different models which allow teachers to take student ideas seriously, press students conceptually, focus on the structure of mathematics and address misconceptions.
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Addition & Subtraction Problem Types
JRUJoin Result Unknown
JCUJoin Change Unknown
JSUJoin Start Unknown
SRUSeparate Result Unknown
SCUSeparate Change Unknown
SSUSeparate Start Unknown
PPW:WUPart-Part-Whole: Whole Unknown
PPW:PUPart-Part-Whole: Part Unknown
CDUCompare Difference Unknown
CSUCompare Set Unknown
CQUCompare Quantity Unknown
CRUCompare Referent Unknown
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CountingForward and Backwards by 10s & 100
22
*an exercise presented by Brenderfur
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Counting Forward
23
1 2 3 4 5 6 7 8 9 10
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Counting Forward
24
1 ten
10
ten ones
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Counting Forward
25
111 ten What is staying the same? What is changing?
11
ten ones
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Counting Forward
26
11 121 ten What is staying the same? What is changing?
12
ten ones
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Counting Forward
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11 12 131 ten What is staying the same? What is changing?
13
ten ones
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Counting Forward
28
11 12 13 14
14
ten ones
1 ten What is staying the same? What is changing?
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Counting Forward
29
11 12 13 14 15
15
ten ones
1 ten What is staying the same? What is changing?
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Counting Forward
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11 12 13 14 15 16
16
ten ones
1 ten What is staying the same? What is changing?
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Counting Forward
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11 12 13 14 15 16 17
17
ten ones
1 ten What is staying the same? What is changing?
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Counting Forward
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11 12 13 14 15 16 17 18
18
ten ones
1 ten What is staying the same? What is changing?
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Counting Forward
33
11 12 13 14 15 16 17 18 19 What is staying the same? What is changing?
19
ten ones
1 ten
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Counting Forward
34
11 12 13 14 15 16 17 18 19 20 What is staying the same? What is changing?
20
tens ones
1 ten
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Counting Forward
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1 ten 2 tens
20
tens ones
10
ten ones
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Counting Forward
36
21
tens ones
211 ten 2 tens
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Counting Forward
37
22
tens ones
21 221 ten 2 tens
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Counting Forward
38
23
tens ones
21 22 231 ten 2 tens
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Counting Forward
39
24
tens ones
21 22 23 241 ten 2 tens
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Counting Forward
40
25
tens ones
21 22 23 24 251 ten 2 tens
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Counting Forward
41
26
tens ones
21 22 23 24 25 261 ten 2 tens
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Counting Forward
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27
tens ones
21 22 23 24 25 26 271 ten 2 tens
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Counting Forward
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28
tens ones
21 22 23 24 25 26 27 281 ten 2 tens
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Counting Forward
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29
tens ones
21 22 23 24 25 26 27 28 291 ten 2 tens
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Counting Forward
45
21 22 23 24 25
2+10
tens ones
26 27 28 29 301 ten 2 tens
10
ten ones
20
tens ones
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Counting Forward
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30
tens ones
3 tens1 ten 2 tens
20
tens ones
10
ten ones
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Counting Backward
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3 tens1 ten 2 tens
20
tens ones
10
ten ones
30
tens ones
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Counting Backward
48
29
tens ones
21 22 23 24 25 26 27 28 291 ten 2 tens
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Counting Backward
49
28
tens ones
21 22 23 24 25 26 27 281 ten 2 tens
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Counting Backward
50
27
tens ones
21 22 23 24 25 26 271 ten 2 tens
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Counting Backward
51
26
tens ones
21 22 23 24 25 261 ten 2 tens
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Counting Backward
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25
tens ones
21 22 23 24 251 ten 2 tens
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Counting Backward
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24
tens ones
21 22 23 241 ten 2 tens
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Counting Backward
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23
tens ones
21 22 231 ten 2 tens
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Counting Backward
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22
tens ones
21 221 ten 2 tens
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Counting Backward
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21
tens ones
211 ten 2 tens
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Counting Backward
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1 ten 2 tens
20
tens ones
10
ten ones
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Counting Backward
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11 12 13 14 15 16 17 18 19
19
ten ones
1 ten
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Counting Backward
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11 12 13 14 15 16 17 18
18
ten ones
1 ten
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Counting Backward
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11 12 13 14 15 16 17
17
ten ones
1 ten
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Counting Backward
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11 12 13 14 15 16
16
ten ones
1 ten
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Counting Backward
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11 12 13 14 15
15
ten ones
1 ten
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Counting Backward
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11 12 13 14
14
ten ones
1 ten
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Counting Backward
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11 12 13
13
ten ones
1 ten
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Counting Backward
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11 12
12
ten ones
1 ten
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Counting Backward
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11
11
ten ones
1 ten
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Counting Backward
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10
ten ones
1 ten
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Counting Backward
68
1 2 3 4 5 6 7 8 9
9
ones
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Counting Backward
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1 2 3 4 5 6 7 8
8
ones
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Counting Backward
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1 2 3 4 5 6 7
7
ones
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Counting Backward
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1 2 3 4 5 6
6
ones
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Counting Backward
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1 2 3 4 5
5
ones
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Counting Backward
73
1 2 3 4
4
ones
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Counting Backward
74
1 2 3
3
ones
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Counting Backward
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1 2
2
ones
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Counting Backward
76
1
1
ones
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Counting Backward
77
0
zero
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Go Noodle!
https://www.gonoodle.com/channels/youtube/count-by-2s-5s-and-10s
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Addition & Subtraction Problem Types
JRUJoin Result Unknown
JCUJoin Change Unknown
JSUJoin Start Unknown
SRUSeparate Result Unknown
SCUSeparate Change Unknown
SSUSeparate Start Unknown
PPW:WUPart-Part-Whole: Whole Unknown
PPW:PUPart-Part-Whole: Part Unknown
CDUCompare Difference Unknown
CSUCompare Set Unknown
CQUCompare Quantity Unknown
CRUCompare Referent Unknown
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Sample ProblemEllie has 22 apples. She gives 13 to Mark. How many apples does she have left?
-How should your students model this problem?
-Write them on index cards.
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Models *Bar/Tape Model*Number LinePicturesTen FrameVenn DiagramTree DiagramGraphs
Tools*Unifix CubesRekenrekDice, Cards, DominoesBase Ten BlocksGeoboard*Graph PaperMisc. Manipulatives
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Identify whether the model is enactive, iconic, or symbolic and how you know.- Include the models you created on the index cards.
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Modes of RepresentationEnactive
Physical or action-based representations
IconicVisual image(s) of a situation that is relatively proportionally accurate
SymbolicAbstract representations where the meaning of the symbols must be learned
Bruner, J. (1964)
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EnactiveIconic
Symbolic
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Enactiveconcrete, physical, manipulatives, cubes, fingers (objects)
Iconicvisual, picture, drawing, diagram, bar model, number line, graph
Symbolicnumbers, symbols, table, equation, algorithm,
notations, abstract, words
What words are used to connect to the enactive, iconic and symbolic representations? What words do the CCSS use?
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Using the E-I-S Trajectory to Diagnose Student Understanding
•Enactive•Iconic•Symbolic
One potential trajectory for how students may come to represent their understanding of subtraction.
- How is this similar or different to how you sequenced the models?
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DMT Framework
http://dmt.boisestate.edu/
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Session 2 Focus
● Discuss Strategies vs. Models
● Practice Categorizing sample student work
● Work to develop a very rough draft rubric
● Rate various models and tools
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ENACTIVE-ICONIC-SYMBOLIC Model TRAJECTORY Discussion
To Analyze Student Thinking
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Stategies vs. Models
strategy = the mental process we use to solve
model = the method of notation used to explain our strategy
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Solve Multiple Ways
a. 3 + 5
b.38 + 7
c. 492 + 263
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Discuss
a. 3 + 5
b.38 + 7
c. 492 + 263
Compare within your group. We will
return to discuss whole group later.
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1. How would you sequence these student solutions from informal to formal (include your index card examples also)?
2. If time allows, identify how the student thinking is similar or different among models?
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Using the E-I-S Trajectory to Diagnose Student Understanding
•Enactive•Iconic•Symbolic
One potential trajectory for how students may come to represent their understanding of subtraction.
- How is this similar or different to how you sequenced the models?
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THE ENACTIVE-ICONIC-SYMBOLIC TRAJECTORY
As Instructional Scaffolding
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E-I-S as Instructional Scaffolding
How do you take a student who is here . . . . . . . . . . . . . . . . . . . . . . . to here?
Ellie has 22 apples, she gives 13 to Mark, how many apples does she have left?
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Line up the ‘cubes’ horizontally so the ‘drawing’ looks like the following.
Set up as a bar model.
Draw the number line off the bar model.
Represent jumps on bar model/number line combination
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E-I-S as Instructional Scaffolding
One instructional progression from an informal iconic drawing to a more formal iconic drawing
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E-I-S as Instructional Scaffolding
How do you take a student who is here . . . . . . . . . . . . .
. . . . . . . . . . to here? Ellie has 22 apples, she gives 13 to Mark, how many apples does she have left?
. . . . . . . . . . or here?
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E-I-S as Instructional Scaffolding
One potential instructional progression from an informal iconic drawing to a more formal iconic drawing
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E-I-S as Instructional Scaffolding
What is the mismatch between taking a student who is here . . . . . . . . . . . to here?
Ellie has 22 apples, she gives 13 to Mark, how many apples does she have left?
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More Practice Sorting
Samples from Idaho State Department Web
http://www.sde.idaho.gov/site/math/mtiWebinarsArchived.htm
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Discuss ● Bar model with and without individual
numbers and number line● Base Ten Blocks - number line (enactive)● Base Ten Blocks - number tree (iconic)
*Listen to student thinkinghttp://youtu.be/xZk5Zo2L5oU
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Big Ideas for Take Away
● There isn’t a perfect addition progression.
● We can have general ideas but models and strategies may fit in different places based on the students, the task or the number set.
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Creating a Math Rubric
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Copyright ©2001, revised 2015 by Exemplars, Inc. All rights reserved.
Four Point Rubric from Exemplars Inc.
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1 Point:Little Accomplishment
2 Points:Marginal Accomplishment
3 Points:Substantial Accomplishment
4 Points:Full Accomplishment
● No attempt is made to construct representations (Exemplar S)
● No evidence of a strategy, or uses a strategy that does not help solve the problem(Exemplar C)
● Applies procedures incorrectly (Exemplar C)
● No evidence of mathematical reasoning (Exemplar C)
● An attempt is made to construct representations (Exemplar S)
● A partially correct strategy is chosen, leading some way toward a solution but not to a full solution of the problem (Exemplar C, S)
● Could not completely carry out procedures (Exemplar C)
● Some evidence of mathematical reasoning (Exemplar C)
● Appropriate and mostly accurate mathematical representations (Exemplar S)
● A correct strategy is chosen based on the mathematical situation in the task (Exemplar S)
● Applies procedures with minor error(s) (Exemplar C , Van de Walle, 2006)
● Uses effective mathematical reasoning (Exemplar C)
● Appropriate and accurate mathematical representations (Exemplar S)
● Uses an efficient strategy leading directly to a solution (Exemplar C)
● Applies procedures accurately to correctly solve the problem (Exemplar C)
● Employs refined and complex reasoning (Exemplar C)
Adapted from Van de Walle, J. (2004) Elementary and Middle School Mathematics: Teaching Developmentally. Boston: Pearson Education. pages 78-82 Adapted from Exemplars Classic Exemplars Rubric. Retrieved from: http://www.exemplars.com/assets/files/math_rubric.pdf (Exemplar C) Adapted from Exemplars Standards-Based Math Rubric. Retrieved from: http://www.exemplars.com/assets/files/Standard_Rubric.pdf (Exemplar S)
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Three Point Rubric that evolved from the previous attempts and adapted from Van de Walle and Exemplars.
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Go Noodle
https://www.gonoodle.com
https://www.gonoodle.com/channels/think-about-it/make-a-wish
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Rate the Model and Tools
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Which statement are you leaving with? 1.“I need to teach the models that are
appropriate for my grade level.”
1. “I need to find contextual problems that will encourage students to use the models that are appropriate for my grade level.”
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Which statement are you leaving with? 1.“I need to teach the models that are
appropriate for my grade level.”
1. “I need to find contextual problems that will encourage students to use the models that are appropriate for my grade level.”
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DMT Framework
http://dmt.boisestate.edu/
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ReferencesBrendefur, J., Thiede, K., Strother, S. , and Carney, M. (2015). DMT Framework and Classroom Structure. Department of Education, Boise State University, Boise, Idaho.
Bruner, J. S. (1964). The course of cognitive growth. American psychologist,19(1), 1.
Cobb, P. (2000). Conducting teaching experiments in collaboration with teachers. In R. Lesh & A. Kelly (Eds.), Handbook of research design in mathematics and science education (pp. 307-334). Mahwah, NJ: Lawrence Erlbaum.
Imm, K. L., Fosnot, C. T., & Uittenbogaard, W. (2007). Minilessons for operations with fractions, decimals, and percents: A yearlong resource. firsthand/Heinemann.
Dolk, M., & Fosnot, C,T, (2002). Young Mathematicians at Work: Constructing Fractions, Decimals and Percents: Heinemann, 1-19.
Gravemeijer, K., & van Galen, F. (2003). Facts and algorithms as products of students’ own mathematical activity. A research companion to principles and standards for school mathematics, 114-122.
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ReferencesRomberg, T. A., & Kaput, J. J. (1999). Mathematics worth teaching, mathematics worth understanding. Mathematics classrooms that promote understanding, 3-17.
Smith, M.S., & Stein, M.K. (2011). 5 practices for orchestrating productive mathematics discussions. Reston, VA: NCTM.Thurston, W.P. (1990, January). Letters from the editors. Quantum, 6-7.
https://www.gonoodle.com Go Noodle
http://gregtangmath.com/index
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FOR COPIES
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GRAPHICS
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