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REALISTIC MATHEMATICS
EDUCATION FROM THEORY TO
PRACTICE
Jasmina Milinković
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The main principles of RME
P1. Real context;
P2. Models;
P3. Schematization
P4. Integrative approach
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P1 Genuine realistic contexts in RME
Source for the learning process
Complex
Multifaceted problems
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“realistic” - “imaginable”
4
Kad od Češke podjem peške,
Mogu bez ijedne greške,
Preko Finske, preko Švedske,
Ja da stignem do Norveške.
V. Binić
Dream of
traveling around
world
When you come along on foot from the Czech Republic,
I can without any error,
Through Finland, over Sweden
Get to Norway.
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Real context for children
5
Nontrivial
Relevant
Exemplary contexts:
- everyday child’s surrounding (school, home)
- fairy tale alike,
- science fiction movie scenarios like,
- mathematical
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Game
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Fairy tale
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Dangler
Can you make a triangle from any 3 segments?
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White and Blue tiles of Pythagoras
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What is the shortest distance between
Amsterdam and Chicago?
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Arc on a Great Circle
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Role of problems in real context
First, they are used to elicit, to constitute or re-invent
mathematical concepts.
Second, problems are used to show how mathematical
knowledge can be applied, used to solve real context
problem situations.
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P2 Schematization
Schematization is process of gradual building up of mental
schemes toward formal schemes of mathematics science.
Schematization in mathematics is a result of
mathematization.
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Mathematization
Horizontal mathematization
- going from real world into world of mathematical
symbols;
Vertical mathematization
- building up and reorganization within the
mathematical structure.
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Odd – Even
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Oli (Odd) – Milan (Even)
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2 plus 4 equals 6.
6 is even.
Result: Milan wins.
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Oli (odd) : Milan (even)
17
Sum 1 2 3 4 5
1 2
2 3 5 6
3
4 8
5 7 10
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Oli (odd) : Milan (even)
18
Sum 1 2 3 4 5
1 2
2 3 5 6
3
4 8
5 7 10
Sum 1 2 3 4 5
1 M
2 O O M
3
4 M
5 O M
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Oli (odd) : Milan (even)
19
Sum 1 2 3 4 5
1 2
2 3 5 6
3
4 8
5 7 10
Sum 1 2 3 4 5
1 E
2 O O E
3
4 E
5 O E
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Oli (odd) : Milan (even)
20
Sum 1 2 3 4 5
1 2 3 4 5 6
2 3 4 5 6 7
3 4 5 6 7 8
4 5 6 7 8 9
5 6 7 8 9 10
Sum 1 2 3 4 5
1 E O E O E
2 O E O E O
3 E O E O E
4 O E O E O
5 E O E O E
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Oli (odd) : Milan (even)
21
Sum 1 2 3 4 5
1 E O E O E
2 O E O E O
3 E O E O E
4 O E O E O
5 E O E O E
Odd 12 combinations
Even 13 combinations
12 :13
Conclusion
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P3 Multiple models
22
Models are mediating tools
Models help students to solve problems
Models serve as didactical tools
The result of PS process is a mathematical model.
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Modeling tasks
23
Task Feature
Realistic modeling Create a price structure for
a taxi driver.
Open task
Have to create a model
Whole modeling cycle
Contextual modeling A taxi driver has a fixed
price of 2$ and the
price/km is $0.15. How
much costs a drive of 6km.
Word problem
Educational modeling
Socio critical modeling
Epistemological modeling
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Parking lot
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Model for percents
25
0% 100%
0 N
95%
0 100
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Maribor Branik - Lancia
26
Stadium “Ljudski vrt”
Capacity 12 994 people
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P4 Integration of mathematics
27
On a level of studying
problem
lesson
unit
strand
subject
curriculum
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Connections unit
28
Geometry - Number – Probability - Algebra
Activities:
Exploring maps of various kinds
Making decisions
Using simple graphs
Representing
Concept of maximal graph
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Connections
1) Connecting student’s experience with math learning;
2) Connecting conceptual and procedural knowledge;
3) Connecting mathematics and other subjects;
4) Connecting mathematics concepts.
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Mathematics in Context
Math in the real world
Math in the background
Mathematics underlying phenomena
Math in the environment
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Snake forest
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Black red rings snake
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Snake growth
33
R - red ring
B – black ring
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Successive strings
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35
Number of rings in n- cycle?
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Answer
36
R rings 1, 2, 4, 8, … , 2n-1
B rings 0, 1, 3, …, 2n-1- 1
Total 1, 3, 7, …, 2n- 1
12 n
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Pottery: Form and Shape
37
Archeological situations
Statistics
Classification and pattern matching
Combining knowledge of ratio and geometry
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Webster’s classification system
38
How do you think the
information in the pictures could
be used to classify these vessels?
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Jar or Plate or Bowl or Dish or Plate?
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Implementation of RME in classroom
42
1)What is teacher role in RME classroom?
2) What teaching methods should they use?
3)What educational materials should be used?;
4) How to assess students progress?
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What is teacher role in RME classroom?
43
Planner
Facilitator
Organizer
Coordinator
Evaluator
Assessor
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Make a drawing to express that 25 percent
of the flowers are red.
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How to assess students progress?
45
Multiple sources of information on students’
understanding and performance.
The purpose : to gain information about development of
structure of mathematical knowledge.
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Assessments on percents
46
How many grams of fruit
does this jar contain? Show
how you got your answer.
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Parking lot
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1. Which parking lot is more full?
2. Figure out for each parking lot whether
the red light is on or not? Explain…
48
PARKING LOT A
Total space 200
Occupied 183
90%
PARKING LOT B
Total space 300
Occupied 255
90%
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Which ad do you think The Yamm company
would use?
49
The Yamm Company
Yamm bar $1
Yammy bar $1.25
Ideas for an advertising campaign:
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The students’ profile:
50
1) How does he solve (meaningful) mathematical problems;
2) How does she communicate ideas (use mathematical
language);
3) How does he reason mathematically;
4) Does she make connections between mathematics and
other domains, and everyday life;
5) What does he understand about mathematical concepts
and procedures;
6) What is her disposition toward mathematics (creativity,
interest, confidence).
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Shortcomings of RME
- attachment to the contexts and models
- difficult transfer
- lack of time for practicing and memorizing mathematical procedures
- simultaneous multiple concepts
- delayed transition to abstract concepts
- importance of the structure of the staff in school
- importance of professional qualifications of teachers
- RME is technically and time demanding
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52
Materials revised for this presentation come from:
Field test version of Mathematics in Context, published by
Encyclopedia Britannica Corporation
Materials for workshops organized for teachers involved
in the field testing of MiC.
Mathematics for IV grade, textbook published by
Kreativni Centar, Beograd
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Time for your questions
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