“It’s spelled wrong, Mama!”
April 24, 2012
Young Anson, a precocious four years of age, was playing the Zero Game as part of RightStart™ Level A, lesson 16. Numbers from 0
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Author: Kathleen Cotter Clayton
Valentine’s Day Applied Math
February 16, 2012
In a small school district in North Dakota, elementary students make Valentine’s Day card boxes to collect cards from their friends. Some students just
What are Check Numbers?
February 7, 2012
Check numbers are a method of checking addition. Sometimes, this is called Casting out Nines. Check numbers also works with subtraction, multiplication, and division.
Cotter Fractal Tree
December 19, 2011
Want to see something amazing? Check out Marshall and Karen’s fractal. Since it was the Christmas season, they decided to make it a Cotter Fractal Tree!!
Carson Jody’s Birthdate
December 2, 2011
This post is a personal post with a delightful math twist. I am Kathleen Cotter Lawler, Joan Cotter’s daughter. Today, December 1, 2011, my
Addition Games
November 18, 2011
Old Main Game (#A4) This game is spin off of the popular child’s game Old Maid. Rather than pairs being matching cards, pairs are
Spiral or Mastery?
November 18, 2011
Is RightStart™ Mathematics Spiral or Mastery Approach? RightStart™ Mathematics is a unique program that has aspects of both spiral and mastery approach. Both approaches