Key Words:
proportion
part whole 
andelen
delen det hela 
a numerical relationship that compares things or people.
a portion or division of a whole, some but not all of something the full quantity or amount, all of something 
Key Concepts:


Videos:

Explanations:
Percents
Video Explaining Fraction of a Number
Math Goodies Percents & Proportions
https://learnzillion.com/assignments/F53V73P Proportions using percents, decimal, and fractions
Virtual Nerd Explanation: Cross Multiplication for Proportion
Virtual Nerd Definition of Proportions
Virtual Nerd Proportions in Problem Solving
http://www.mathgoodies.com/lessons/percent/proportions.html
Solving Proportions using the Pyramid
Percentages Wheel
Percents Activities Explanation
Video Explaining Fraction of a Number
Math Goodies Percents & Proportions
https://learnzillion.com/assignments/F53V73P Proportions using percents, decimal, and fractions
Virtual Nerd Explanation: Cross Multiplication for Proportion
Virtual Nerd Definition of Proportions
Virtual Nerd Proportions in Problem Solving
http://www.mathgoodies.com/lessons/percent/proportions.html
Solving Proportions using the Pyramid
Percentages Wheel
Percents Activities Explanation
Online Practice & Games:
Solving for the part IXL
Solving for the proportion IXL
Solving for the part with money IXL
Solving for the part Word Problems IXL
PacMan Proportions of a Number
MathSalamander Proportions
Math Salamander Fraction of a Number
Webmath
Solving for the proportion IXL
Solving for the part with money IXL
Solving for the part Word Problems IXL
PacMan Proportions of a Number
MathSalamander Proportions
Math Salamander Fraction of a Number
Webmath