cognitive levels and types of mathematical activities
DESCRIPTION
Lynn Bowies talk at the Marang aniversary symposiumTRANSCRIPT
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Cognitive levels and types of mathematical activities
Prof Margot Berger
Lynn Bowie
Prof Lovemore Nyaumwe
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Was the 2008 matric maths
exam a good one?
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SAGM
Knowledge Routine Procedures
Complex Procedures
Solving Problems
Recall, Use of formulae or algorithms
Well-known procedure
Mainly unfamiliarNo direct route to solutions
Non-routineUse higher level cognitive skills and reasoningBreaking down problem into constituent parts
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Porter
Memorize facts/ definitions/ formulae
Perform Procedures
Demonstrate an understanding of mathematical ideas
Solve non-routine problems/ make connections
Conjecture/ generalize/ prove
Recall basic factsRecall basic formulae or computational procedures
Follow proceduresSolve equationsRead or produce graphs
Communicate mathematical ideasUse representation to model ideasDevelop relationships between concepts
Apply and adapt strategies to non-routine problemsApply maths in contexts outside maths
Determine the truth of a mathematical pattern or proposition Write formal or informal proofs
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Stein et alMemorization Procedures
without connections
Procedures with connections
Doing Mathematics
Reproduction of previous learnt fact, formula, rule, definition
AlgorithmicUnambiguousRequire no explanation
Engage with underlying conceptual ideasMake connections among multiple representations
Complex, non-algorithmic thinkingDemand self-monitoring of cognitive processesAnalyse task
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NAEP
Low complexity Moderate Complexity High Complexity
RecallItem specifies what a student is to do
Student must decide what to do – bring together concepts and processesRequire more flexibility of thinking and choice among alternatives than do those in low complexity category
Use reasoning , planning, analysis, judgment, creative thoughtMay be expected to justify/construct an argument
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1%
62%
25%
12%
SAGM
KnowledgeRoutine ProcComplex ProcProblem Solving
1%
51%48%
Stein
Memoriza-tion
Procs with connections
doing maths
Procs without connections
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Routine, but with connections
Having drawn the graph of f(x) = 2(x-1)2 – 8 :
The graph of f is shifted 2 units to the left. Write down the equation of the new graph
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Solving problems/non-routine
QUESTION A
Given
1) Write down x2 in terms of x
2) Hence determine the value of x
QUESTION B
Given x = 999 999 999 999, determine the exact value of
6 6 6 6 ....x
2 4
2
x
x
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Proof
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Proof
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• NCS: In SAG and Exam guidelines:– Content– Cognitive levels
• OTHER: Weighting in terms of objectives“Read, interpret and solve a given problem using appropriate mathematical terms”“Formulate a mathematical argument and communicate it clearly”“Organize and present information and date in tabluar, graphical and/or diagrammatic forms”
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NCS
• Mathematics is important for critical democratic citizenship
• Mathematics is relevant and practical. Mathematical modelling is an important tool
• Mathematics is created and organised using particular processes
• Mathematics is a body of knowledge
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NCS Maths
• Purpose: “An important purpose of Mathematics in the FET band is the establishment of proper connections between Maths as a discipline and the application of mathematics in real-world contexts. Mathematical modelling provides learners with the means to analyse and describe their world mathematically...”
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Modelling
• “Modelling as a process should be included in all papers, thus contextual questions can be asked in any topic”
• Word problems vs standard applications vs modelling problems
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NCS MATHS
• Purpose:“Competence in mathematical process skills such as investigating, generalising and proving is more important than the acquisition of content knowledge for its own sake”
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Process skills
• In number patterns:– NCS: investigate, make conjectures, generalise,
explain, justify, prove– EG clarification: investigate, identify, extend, explain,
determine, calculate • Proofs of the sum of arithmetic and geometric series are
examinable• Prove properties of polygons using analytic methods• Proofs of trig formulae excluded• Proofs in transformation geom? Proofs in algebra?
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What possibilities?
Low complexity
Moderate complexity
High Complexity
Solving real-world problems; Mathematical modelling
Mathematical practices, such as conjecturing, generalising, justifying providing
Mathematical knowledge (facts, procedures, forms of representation, notation)