Dear DMCQ, 

 I see your point, but while teaching and the encyclopedia are not exactly the same thing, they are closely related.  The definition of an encyclopedia is "a book or set of books giving information on many subjects or on many aspects of one subject and typically arranged alphabetically".  One definition of the word "teach" is   give information about or instruction in (a subject or skill). 

 Since they are not the same, I'm suggesting an External Link to Fee Math Flash Cards not including it in the article.  However, I believe it's the best method to memorize the multiplication table.  Perhaps Wikipedia should have an article about Free Math Flash Cards.  What do you think? 

 It also seems you did not visit Free Math Flash Cards.  It also contains information about multiplication as you mention above on the help pages. 

 The most important reason to add an external link to Free Math Flash Cards is to help the users of Wikipedia.  I believe most people who view this article are parents teachers or students who need help with multiplication.  The Wikipedia Multiplication page does a wonderful job of defining multiplication.  The next logical step for your users is to provide methods for them to actually memorize the multiplication table.