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Johnston, Peter – Mathematics Teaching, 1978
An alternative approach is described for presenting the idea of the derivative through the use of chords of a graph. (MP)
Descriptors: Calculus, Graphs, Instruction, Learning Activities
Mathematics Teaching, 1978
Topics discussed are: triangular numbers; three proofs of the surface area of a sphere; reverse notation; highest common factors; square roots from a graph; and clock geometry. (MP)
Descriptors: Elementary Secondary Education, Geometry, Graphs, Instruction
