This lesson teaches children how to find all possible solutions when there are two or more unknown values.  Children will be encouraged to work systematically to find the possible values. There is a teaching presentation and three levels of worksheets (working towards, expected and greater depth) with a range of fluency, reasoning and problem solving questions.

National Curriculum Objectives:
Mathematics Year 6:

use simple formulae
generate and describe linear number sequences
express missing number problems algebraically
find pairs of numbers that satisfy an equation with 2 unknowns
enumerate possibilities of combinations of 2 variables

Differentiation:
There are three levels of differentiation in this pack: ‘working towards,’ ‘expected’ and ‘greater depth’.

Level of this pack:

Age: 10-11
 England & Wales: Year 6
 Scotland: Primary 6
 Rep. Ireland: Fifth Class
 Australia: Grade 5
 USA: Grade 5

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