Balancing equations

A complete lesson on the theme of balancing equations. There is no solving involved, and the idea is that this lesson would come before using balancing to solve equations.

Activities included:

Starter:
Pupils are presented with a set of number statements (see cover slide) and then prompted to discuss how each statement has been obtained. Pupils then create a similar diagram with an initial number statement of their choice, then could swap/discuss with another student.

Main:

• Pupils are shown an equation and try to create other equations by balancing. They can use substitution to verify whether their new equations are valid. I would follow this up with a whole-class discussion to clarify any misconceptions.
• Four sets of equations that have been obtained by balancing, pupils have to identify what has been done to both sides each time.
• A ‘spot the mistake’ worksheet which incorporates the usual misconceptions relating to manipulating and balancing equations.

Plenary:
A taster of balancing being used to solve equations.

Possible key questions, follow up and extension questions included in notes boxes at bottom of slides.

Please review if you buy as any feedback is appreciated!