Presentation (Powerpoint) File
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Students start with True/False questions that deal with a review of equivalent expressions.
The next 3 pages are notes in which the teacher must guide the students.
Students will learn for the first time what an inverse is, and why and what it means to do something on "both sides" of the equation.
Explain that one-step equations can easily be solved mentally most of the time, but every equation, no matter how big, can be solved using inverses.
These notes will take the majority of the class period. Demonstrate and be picky about how students should show work for the problems on the last page.
For 6th or 7th grade (uses negative numbers).