Students will learn the difference between expressions and equations, and how to solve one-step equations. Students should also be able to solve some one-step equations mentally. I think such equations should be taught first. Consider \(6 = 2x.\) I could divide both sides by \(2,\) but I prefer to think, "what number, when multiplied by \(2,\) gives me \(6?\) Similarly, with \(3 = 7 - x,\) I prefer to think, "what number, when subtracted from \(7,\) gives me \(3?\) Not all one-step equations can be solved mentally. Consider 0.48x = 0.32. This requires simplifying the fraction 0.32/0.48, which is probably too difficult for students at this level. Similarly, 2/4 + x = 1/10.