...A student may not understand why 0.3 is greater than 0.25, but they know why three dimes are worth more than two dimes and a nickel. Another is to present a simpler problem with the same concept, such as posing 1/3 + 1/4 to a student who answers 7/12 + 4/5 = 11/17. Yet another is to consider an extreme case. (read more)
...I have a Master's degree in chemistry from the University of Alabama and a Bachelor of Arts in Chemistry from Lawrence University, WI. I have spent some time in industry working as a chemist at Chattem Chemical, Chattanooga and at the DuPont Experimental Station in Delaware as an Associate Inve... (read more)