Although this standard is quite simple, it is important for students to understand that will use an equation when determining one result, and an inequality when needing more than one result, or a minimum/maximum answer. Emphasis will need to be placed on real-world examples of situations that would warrant an equation or inequality.Also, it is never good practice for students to rely on key words to form their equations and inequalities. If they get into this habit, it may cause them to form incorrect equations/inequalities. For example, if they are told that Marvin has 5 fewer baseball cards than Fernando, and Fernando has 25 baseball cards, they may incorrectly create a subtraction equation. Remember the format for these equations would be written as y = x + a. So, in this case, the equation should be 25 = x + 5.
Click on the following links for more information.
6.9 Expressions, equations, and relationships. The student applies mathematical process standards to use equations and inequalities to represent situations. The student is expected to:
(A) write one-variable, one-step equations and inequalities to represent constraints or conditions within problems