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Solving linear equations using algebra tiles

17/3/2015

 
By the time I teach linear equations, I've already used algebra tiles quite a lot with pupils to create algebraic expressions. After working through one-step equations and ensuring pupils understand the processes involved (rather than just solving "by eye"), I move on to linear equations. 
I also tend to teach solving linear inequalities at the same time, as it helps pupils see the connection between the two topics. For some reason, pupils panic at inequalities in exam situations, even though the solving process is identical, and teaching both equations and inequalities at the same time goes some way to avoid this.

One thing that's crucial when working with manipulatives such as algebra tiles is that pupils also develop ways of working with correct algebraic notation. When I teach this lesson, while I get pupils to use the tiles to model and demonstrate their calculations, I also ask them to record their working "traditionally" in their exercise books, reinforcing the move away from the tiles to a pure algebraic solution.
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mexican tile link
14/6/2016 12:11:17

For some reason, pupils panic at inequalities in exam situations, even though the solving process is identical, and teaching both equations and inequalities at the same time goes some way to avoid this.


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