The choirs and orchestras of secondary mathematics Anne Watson East London Maths Forum June 2008.

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Presentation transcript:

The choirs and orchestras of secondary mathematics Anne Watson East London Maths Forum June 2008

Trigonometry 2.6 cm 68 mm θ A B C

Trigonometry Triangle properties (not names): right angle; orientation; angle-sum Labelling (conventions): vertex letters are not algebra; lengths are not accurate; θ is ‘theta’ and often used for angles; what is the curved line? Concepts: ratio; inverse function; transforming equations etc. …

What prior knowledge is helpful? What is unhelpful? Images Language Methods Contributory concepts Assumptions Limitations ………………. etc.

Whole school approaches to creating the orchestra

Straight line graphs

Internet images of straight line graphs Nearly all positive Negatives go through zero or are about fitting lines to data points Key Maths says ‘top left to bottom right’

Straight line graphs Graphs: represent a quantitative relationship; relation between line and coordinate pairs (conventions and meaning) Reading a graph: axes; continuity; (conventions and meaning) Dimensions of variation & range of possible changes etc.

What prior knowledge is helpful? What is unhelpful? Images Language Methods Assumptions Limitations ………………. etc.

Whole school approaches to creating the orchestra

Calculus y = (x 2 + 1) e -x

Calculus

Use of letters: variables; unknowns; parameters; constants Functions: expressions; relations between functions Graphs: … Similarity: … etc. …

What prior knowledge is helpful? What is unhelpful? Images Language Methods Assumptions Limitations ………………. etc.

Whole school approaches to creating the orchestra

Vertical integration of key ideas in the curriculum Continuity How to read mathematics Different meanings of letters Ratio Similarity Functions and graphs etc.

Algorithm … Algorithm – you can use it Algorithm – why teach anything more? Algorithm – don’t abuse it Algorithm – why teach anything more? I will test you To see if you know it Then I’ll give you Your next target

Thankyou for thinking Anne Watson: Raising Achievement in Secondary Mathematics, Open University Press 8 th Annual Institute of Mathematics Pedagogy July 28 th to 31 st Cuddesdon near Oxford John Mason, Malcolm Swan, Anne Watson