Math
Lesson 1
Numbers up to the Millions
Instruction 1-3
Order of Operations Using a Scientific Calculator
Student's, Parent's and Teacher's Links
http://amby.com/educate/ord-op/
http://www.funbrain.com/algebra/
http://en.wikipedia.org/wiki/Order_of_operations
http://www.math.com/school/subject2/lessons/S2U1L2GL.html