From an “Answer Getting Mindset”...SLO nationaal expertisecentrum leerplanontwikkeling From an...
Transcript of From an “Answer Getting Mindset”...SLO nationaal expertisecentrum leerplanontwikkeling From an...
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SLO ● nationaal expertisecentrum leerplanontwikkeling
From an “Answer Getting Mindset”
To a: “Problem Solving Mindset”
ALM 23, 2016, Kees Hoogland (SLO)
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8 x 6 2x + 4
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How many piano tuners are there in Chicago?
https://en.wikipedia.org/wiki/Fermi_problem Fermi (1901 – 1954)
2.8 M pop.
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http://www.cve.nl/item/centraal_ontwikkelde_examens_taal
You arrive at the bus stop
at 8.50.
How many minutes do you
have to wait for the next
bus?
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Van de Craats J. & Bosch R. (2010). Basisboek Rekenen. Pearson, Amsterdam
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SingaporeMath (2007), placement test ,
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http://www.mceducation.us/parents-in-the-u-s-and-in-singapore-agree-on-one-thing-todays-math-questions-are-upsetting/
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Answer getting
Exercises•
Calculate•
Multiple • choice
Right or wrong•
Problem solving
• Problems
• How many ...., What is ..., Why, ....
• Solution to an imaginable question
Unambiguously
More interpretations
CLEAR fuzzy
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Working definitionIt is • problem solving when (just a bit more (mental)) activity is necessary than solving with a known standardized strategy or algorithm.
A • numeracy problems contains a problem situation wherein one or more questions are raised, the answer to which can be obtained by the application of mathematical operations to numerical data available in the problem statement.”
Verschaffel, L., Depaepe, F., & Van Dooren, W. (2014). Word Problems in Mathematics Education. In S. Lerman (Ed.), Encyclopedia of MathematicsEducation (pp. 641-645). Dordrecht, the Netherlands: Springer.
Analogy of the definition of word problems (Verschaffel): “verbal descriptions of problem situations wherein one or more questions are raised, the answer to which can be obtained by the application of mathematical operations to numerical data available in the problem statement.”
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From making exercises to mathematical thinking
• The challenge for the next 25 years
• People with interesting insights
– Dewey, Ehrenfest-Afanasjeva, Freudenthal, Schoenfeld, Verschaffel, Boaler, amongst many others
• Relevant aspects
– suspension of sense-making, rigidity, math anxiety
With references
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• Suspension of sense making
• Calculational approach
Puisque tu fais de la géométrie et de la trigonométrie, je vais te donner un problème : Un navire est en mer, il est parti de Boston chargé de coton, il jauge 200 tonneaux. Il fait voile vers le Havre, le grand mât est cassé, il y a un mousse sur le gaillard d’avant, les passagers sont au nombre de douze, le vent souffle N.-E.-E., l’horloge marque 3 heures un quart d’après-midi, on est au mois de mai… On demande l’âge du capitaine ?Flaubert, 1841
Age of the captain
A captain has 26 sheep and 10 goats.How old is the captain?
Verschaffel, L., Corte, E. D., & Lasure, S. (1994). Realistic considerations in mathematical modeling of school arithmetic word problems. Learning and Instruction, 4(4), 273-294. doi:10.1016/0959-4752(94)90002-7
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Answer getting
• Exercises, sums, calculations, procedures
• Story problems
• Suspension of sense-making
• Executing
• There always is an answer!
Problem solving
• Problems, probem situations
• Numeracy problems
• Solving problems
• Investigating
• Is there a realistic solution?
Answer more important than
reality
TAAL
fuzzy
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Dewey (1859 – 1952)
Recent nog geciteerd door nationale denktank analyse 2015 (zie onderwijs 2032)
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John Dewey 1859-1952
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McLellan, J. A., & Dewey, J. (1895). The psychology of number and its applications to methods of teaching arithmetic. New York, NY,: D. Appleton and Company. p.V
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Tatyana Ehrenfest- Afanasyeva 1925, 1931
• Übungensammlung zu einer
geometrischen Propädeuse (1931)
(Exercises in experimental geometry)
• Heavily criticized already in 1925
Татья́на Алексе́евна Афана́сьева
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Saracho & Spodek (2008)
• "Math anxiety" is school product of a right-wrong culture
Saracho, O. N., & Spodek, B. (2008). Contemporary Perspectives on Mathematics in Early Childhood Education: IAP/Information Age Pub.
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Answer getting
• Leading away from mathematical thinking
• Deforming children
• Causing math anxiety
Problem solving
• Collection of well chosen numeracy problems
• Connected with reality
• Modelling strategies
pooh-pooh
Not so easy to design
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“Mathematics as an educational task” (1973)
“Didactical phenomenology of mathematical structures” (1983)
“Realistic
Mathematics
Education”
Mathematics as a human activity
Freudenthal 1905 - 1990
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Principals of RME
• Guided reinvention
• Didactic phenomenology of mathematical structures
• Mathematics as a human activity
• Horizontal and vertical mathematisation
• Progressive mathematisation
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Answer getting Problem solving
• Problem solving in for the student experiential real situations gives didactical opportunities for developing mathematical concepts and fostering mathematical thinking.
Sounds
good
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Alan H. Schoenfeld
Problem solving
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1. Is it possible to cover “content” as well as productive patterns of mathematical thinking in a problem-based curriculum?
2. If students spend a large amount of time focusing on PPMT, will that result in a decrease in their understanding of core content?
3. Can aspects of the flexible and responsive pedagogy that such an approach demands be captured in curricular materials?
The primary evidence is the collection of 100 “Formative Assessment Lessons” or FALs produced by the Mathematics Assessment Project (2015).
Those were very much open questions twenty years ago. Today there is a solid body of evidence to suggest that the answer to questions 1 and 3 is “yes,” and that the answer to question 2 is “no.”
<http://map.mathshell.org/>. The lead designer for the project is Malcolm Swan.
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Answer getting Problem solving
• A collection of well chosen (quantitative) problems can constitute an adult numeracy curriculum.
• A collection of well chosen (quantitative) problems can foster a relevant didactic.
xxxx Mmmm, interesting
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Blum, Werner, Galbraith, Peter L., Henn, Hans-Wolfgang, & Niss, Mogens (Eds.). (2007). Modelling and applications in mathematics education - The 14th ICMI study. New York, USA: Springer Science & Business Media B.V.
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Verschillende modellen
Verschaffel, L., Corte, E. d., Jong, T. d., & Elen, J. (2010). Use of Representations in Reasoning and Problem Solving - Analysis and improvement. London, UK: Routledge.
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OECD. (2014). PISA 2015 draft mathematics Framework. Retrieved from Paris, France: http://www.oecd.org/pisa/pisaproducts/pisa2015draftframeworks.htm
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Answer getting
• Only the right hand vertical step matters
• All other steps are seen as noise
Problem solving
Always the whole cycle•
It is an organic whole•
Horizontal steps are the essence of •
mathematical thinking
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Boaler, J. (2016). Mathematical Mindsets - Unleashing Students' Potential Through Creative Math, Inspiring Messages and Innovative Teaching. San Francisco, CA: Jossey-Bass.
Jo Boaler
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• “Correct answers are essential... but they're part of the process, they're not the product. The product is the math the kids walk away with in their heads.”
Zie videohttps://vimeo.com/79916037of klik op de afbeelding links.
https://vimeo.com/79916037
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Answer getting
• Exercises can also have a negative effect
Problem solving
• "Struggles and mistakes" are core elements of learning mathematics.
• "You did this very well wrong"Don't mentionthis too loud
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Not helpful
• Atomized learning goals and a tick off culture
• Bad problems: “answer getting in disguise”
• Diagnostics on “answer getting” in combination with “speed”
Yackel, E., & Cobb, P. (1995). Classroom sociomathematical norms and intellectual autonomy. In L. Meira & D. Carraher (Eds.), Proceedings of the Nineteenth International Conference for the Psychology of Mathematics Education(Vol. 3, pp. 264-271). Recife, Brazil: Program Committee of the 19th PME conference.Depaepe, F., De Corte, E., & Verschaffel, L. (2010). Teachers' approaches towards word problem solving: Elaborating or restricting the problem context. Teaching and Teacher Education, 26(2), 152-160. doi:http://dx.doi.org/10.1016/j.tate.2009.03.016
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The Challenge
• Select 50 mathematical learning goals for adult education
– Design 30 well chosen problems for each learning goal
– Select 30 schools / classes and 30 teachers
– Conduct an intensive teacher training on problems solving didactics
– Follow them closely in a longitudinal pilot
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Thank you for your attention.
• @watdoetkees
• https://nl.linkedin.com/in/khoogland
• https://www.facebook.com/kees.hoogland.3
• www.gecijferdheid.nl
• For more information, please contact me by e-mail.