Grade Level(s): 9, 10, 11, 12
Keywords: Mixture, rational expressions, mixing fertilizer, concentration, volume, cpalms, icpalms, illustrativemathematics.org, illustrative mathematics, tasks, mathematics, math, Florida standards, resource, free, freely available, problems-based learning, student activities, interpret expressions
The problem deals with a rational expression which is built up from operations arising naturally in a context: adding the volumes of the fertilizer and the water and dividing the volume of the fertilizer by the resulting sum. Thus it encourages students to see the expression as having meaning in terms of numbers and operations, rather than as an abstract arrangement of symbols. This helps them think through how a change in one of the quantities affects the value of the expression and to see the difference algebraically between doubling one of the variables and doubling the value of the expression.
Source and Access Information
Name of Author/Source: Sarah Kahre
District/Organization of Contributor(s): Florida State University
Is this Resource freely Available? Yes
Access Privileges: Public
* Please note that examples of resources are not intended as complete curriculum.