Tuesday, November 10, 2009

Data Driven Decision Making

This is a lab workout which analyzed a mathematic misconception.

First, this question was asked:


When you multiply two numbers together, the answer is always bigger than both the original numbers
(1) True(2) False(3) I don't know


The answer, is (2) False. When you a number by any number less than one, the rseult will be less than both of the original numbers.




To see how well the class did, I explored Excel and used the Pivot Table feature to analyze the answer data. The results show that 81 said true, 321 said false, and 10 were unsure. 91 people had the misconception that multiplication always produces larger results. Based on these results, this concept needs to be evaluated further during multiplication lessons.

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