Sharing Teaching Ideas: A Formula for Factoring
At a recent meeting of mathematics and science teachers, three colleagues were discussing the algebra courses at their high schools. The major topic of conversation was the amount of time to be devoted to solving quadratic equations by factoring. The three were concerned that by devoting the large number of class days necessary for students to gain proficiency at factoring by inspection or grouping, they were left without sufficient time to work with the students on other important concepts. The teachers agreed that they were stuck in a no-win situation; they accepted and supported the idea expressed in the NCTM's Curriculum and Evaluation Standards for School Mathematics (1989) that less time should be devoted to solving equations by factoring, yet other mathematics teachers within their schools would expect students to be proficient at factoring when they leave algebra.