I recently got to chatting with Kate. She and her son are in RS2 Level E and she wondered how to help her son with the puzzle numbers. He was uninterested in the challenge and was rapidly losing interest in math altogether. I thought this would be a ... Read More
Holiday Bingo Cards
Merry Christmas, Happy Hanukkah, and Happy Holidays! We are all looking forward to a break from schooling and spending time with family and friends, yet we know how important it is for our children to keep up their math facts during a holiday ... Read More
Dr. Cotter on Language
Mathematical Words In mathematics, we can’t do much without using language. Even though the mathematician may write a mass of equations, she needs words to explain their meaning. Good math instruction requires careful attention to the terms ... Read More
Dr. Cotter on Why to Learn Math
Mathematics is one of the greatest tools we humans have inherited. Math is given to us both as a dedicated area of the brain and as a legacy from our society. Galileo understood the importance of math when, hundreds of years ago, he said: “The great ... Read More
Dr. Cotter on Fractions
Fractions have a bad reputation as being incomprehensible and unpredictable. Cartoons and jokes exploit this fear of fractions for amusement. Believe or not, it’s all a huge misunderstanding. Fractions are amazing. Fractions are necessary. ... Read More
Dr. Cotter and Geometry
For years geometry was not considered a topic that primary students could or should study, even though they are surrounded by geometrical shapes. Some second graders I worked with didn’t consider their geometry work to be math, until they saw numbers ... Read More



