The Church of Scientology delivers study technology that was developed by L. Ron Hubbard. This technology has some very basic principles. One of them is related to the fact of never going past words that one doesn't understand. A book called "How to Use a Dictionary" is user friendly to readers of all ages and is highly recommended.
One child who never was able to add or subtract but otherwise was quite intelligent cleared up the definition of the word "equals" and f ound that she never understood this word that alone was preventing the ability to add or subtract. Once that was cleared up she could do math like a champ and the grinning never stopped.
