The last number in a credit card number is the “check digit.” It’s calculated using a fancy math formula that’s fun to fiddle with! Continue Reading →
The Math in Credit Card Security
Tag Archives: arithmetic
Adding Fractions with Cuisenaire Rods
Christine asked me via twitter for some resources for Cuisenaire rods and teaching fractions. Of course I can’t pass the opportunity up to do some fun things with my rods! Continue Reading →
The Flashcard Hater’s Answer to Math Facts!
Want your children to learn math facts but can’t stand flashcards? Try out the iPhone/iPad app MultiAlien for FREE this weekend! Continue Reading →
Long Division with Sumology Number Tiles
My invented and fun method of doing, teaching and/or learning long division. I used the Sumology game from Simply Fun, too! Continue Reading →
Long Division with Playing Cards
In response to a parents report, I “invented” a method of long division while driving home. Continue Reading →
The Order of Operations Explained: Exponents, Multiplication and Addition
Next in the series explaining the order of operations is this discussion on the relation of exponents, addition and multiplication and how to remember the order of operations… the natural way! Continue Reading →
The Order of Operations Explained: Exponents
Next in the series explaining the order of operations is this discussion on exponents and everything this includes. And roots and logs are in this one! Continue Reading →
The Order of Operations Explained: Parenthesis
We continue the series explaining the order of operations with a discussion on parenthesis and all the various meanings of this word. You’ll be surprised as to what it can mean! Continue Reading →
The Order of Operations Explained: Intro and Mnemonics
Part 1 in the series. The order of operations is a set of rules – like the drivers’ handbook for math. If everyone follows the rules, we’ll all be safe. But if someone makes a bad turn, we could be looking at a crash. Continue Reading →
Practicing Math Skills Early in Life Is a Brain Changing Event
New research by Stanford Medical’s Dr. Vinod Menon shows that children can develop math skills and cognition early and quickly – with differences shown in as little as one year! Here is a way to start math learning early. Continue Reading →