Algebra Formulas For Kids
How do I refresh my math memory? I was fairly good at math (like advanced algebra with trig.) but…?
I haven’t had a math class for a year and a half, so I feel like I am forgetting basic concepts…The other day it took me about 5 minutes to remember the formula for the Pythagorean Theorem, and I can’t at all remember the basic rules of equations…I probably still remember how to do them, but there are certain rules that one simply has to know.
I would like to tutor kids in math, which is why I want to refresh my memory.
Thanks
pretend you are helping somebody who knows nothing about math. Make an out line or chart of things to know.
Example Numbers: counting, rearranging, adding etc: Kinds of numbers; real like objects, zero, numbers as lengths, negatives.
Operations add,subtract….powers roots.
Algebra as symbols of ANY unkown number,; Geometry as pictures of numbers, Trig (triangle geometry) …
This can get pretty big fast. notice the more complicated builds on the simpler. Phygaorean is geometry, algebra, trig, general proofs not just 3-4-5 triangle. three dimensions: xsqu +y squ + z squ= length squared. It even shows up in Einstein’s special relativity where it gets mixed up with “imaginary” or “complex” numbers.
History of numbers” Conunting rocks and stuff, Greeks called it “calculating” for “calcus” (sp) for “stone” in Greek. Later “Calculus” invented by Newton and Liebnetz in late 1600′s.
If you are serious, E-mail me breenrichardj@yahoo.com
Lec 20 | MIT 18.06 Linear Algebra, Spring 2005
