I need help explaining ratios and proportions to my 6th grader
These sites should help.
http://www.mathsisfun.com/numbers/ratio.html
http://www.mathsisfun.com/algebra/proportions.html
https://www.khanacademy.org/math/arithmetic/rates-and-ratios/ratios_and_proportions/v/ratio-and-proportion
http://www.homeschoolmath.net/teaching/proportions.php