Math Mojo - Making Math Meaningful
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Abacus lessons:
Introducing the Abacus

The Abax:
Introducing the Abax
Counting on the Abax:
Lesson 1
Lesson 2
Test Yourself
Addition on the Abax:
Lesson 1
lesson2
Lesson 3
Subtraction on the Abax:
Lesson 1
Lesson 2
Lesson 3

Get an Abax

 

Related Lessons
Regrouping and Carrying

Tens Complements

Commutative Law of Addition

Order of columns in Subtraction


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The Basis of Math Mojo

Normally, we are taught a bunch of  "rules" without much of an Idea of why those rules are the rules. In other words, you do not feel like you have anything to do with them, that they are arbitrary.

I call this "not being math enfranchised." Enfranchisement is an interesting concept. To be enfranchised, basically means to be able to take part in something. There is a difference between being entitled to do something, and being enfranchised to do it.

For example, you can be entitled to vote, but if you are blocked from getting to a voting booth on election day, you are disenfranchised.

Along the same lines, you can be allowed to go to school, but if your teacher is lousy, your school environment is rotten, your homelife doesn't allow you to focus on schoolwork when you need to, or anything else prevents you from taking advantage of what school is supposed to teach you, you are disenfranchised.

Isn't it evil to require someone to do something, but not effectively help them learn how to do it? That is just what happens in so many schools today.

Let's face it, sometimes the schools come through, but you still "don't get it." Some of us were just too lazy or disinterested. But now you know the time has come when you would like to fill in this educational gap in your life.

So what do you do if your math-education has fallen through the cracks?

You can start by learning Addition Mojo (using tens-complements) until you really get it. Within a day or two you should be able to add from left to right, instantly, without pencil, paper, or the dreaded calculator. By that time, some more Addition Mojo lessons should be up, and you can turbo-charge your addition skills. In very little time, you will be making more sense out of how you do math, and can progress to Multiplication Mojo.

If you are using this site to teach young children math, go right to the abacus lessons. Read the abacus pages, and start showing a child how an abax works. This is probably the best all-around manipulative method to get a sense for numbers that you can use.

Eventually, there will be full abacus lessons, here, too.

 

Copyright 2001- 2003 by Brian Foley
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