Wednesday, November 19, 2014

Basic Facts

In addition and multiplication the memorization of facts is an absolute necessity to allow students to build on future lessons without being dependent on a calculator or other device to do the basic calculations for them. 

In multiplication,  the only facts that cannot be broken down are the 7's.  Since they are prime, straight memory is required.   All the others can be simplified.  For example, if the 6's or 8's are of any problem, simply think of the 3 and 4 factors and then double them.  For example,  if 8x7 is a problem, think of 4x7 as 28 and then double it.  So 8x7 equals 28+28=56.

Addition,on the other hand,  is more of a rythmic parttern.  Each line starts with a numb er plus zero.  For example, the 4's line would begin with 4+0, 4+1, 4+2...and end with 4+12.  That being said, the answers to the 4's line woukd 4 to 16.  Using the same philosophy,  answers to the 9's line would be 9 to 21.

If there any questions or simplified teacjing ideas, please share.

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