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October 20th, 2014, 11:18 PM  #1 
Senior Member Joined: Nov 2010 From: Indonesia Posts: 2,001 Thanks: 132 Math Focus: Trigonometry  Explaining Addition in Fractions... Before Multiplication...
I am making a math book about properties in math operations. The first chapter is about basic operations in math, which I explain in order: Addition, Subtraction, Multiplication, and Division. It has to cover math operations in whole numbers and fractions. However, I am forbidden to make the subchapters in the first one as Math Operations in Whole Numbers and Math Operations in Fractions. Instead, I have to stick making the subchapters Addition, Subtraction, Multiplication, and Division. This results in some problems: 1. Can I describe addition by negative numbers before explaining about subtraction? 2. Can I explain about addition in fractions whose denominators are different before explaining about multiplication? 3. Can I explain about addition in fractions before explaining about division? Granted, the book is for Middle Schoolers. But it doesn't relieve me from the feeling that the order of explanation is out of place. What do you think, guys? What do you suggest? Thanks in advance for all your inputs. 
October 21st, 2014, 07:49 PM  #2 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,636 Thanks: 2620 Math Focus: Mainly analysis and algebra 
How old are these Middle Schoolers? Surely they'll understand addition, subtraction, multiplication and division already? What is the content of these chapters if they do?

October 22nd, 2014, 07:21 AM  #3 
Senior Member Joined: Nov 2010 From: Indonesia Posts: 2,001 Thanks: 132 Math Focus: Trigonometry 
It's the first chapter: Basic Operations in Math whose sole purpose in the whole book is just for a required context to understand Math Properties.


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