From the Nuffield Foundation, the purpose of this module is to introduce students to the solution of simultaneous equations and demonstrates a rather unusual way of approaching the topic. The equations are largely restricted to equations where the coefficients are +/- 1 to achieve some simplicity in the algebra with sometimes more than two unknowns.
The resource includes:
*Introduction for the teacher which outlines the development of the material
*Worksheet 1: becoming familiar with relationships such as adding and subtracting directed numbers in algebraic form
*Worksheet 2: detailed exposition of the graphical solution of a pair of simple linear equations
*Worksheet 3: extension of methods from Worksheet 1 to 3 variables
*Worksheet 4: solving simple arithmograms where sums of adjacent pairs are given.
The student material contains a number of exercises and questions.
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