Rachel
About
Khan Academy on a Stick
Advanced ratio problems
More advanced ratio problems
Ratios with algebra
The Golden Ratio
Ratio problem with basic algebra (new HD)
Writing proportions
More advanced ratio problem--with Algebra (HD version)
Advanced ratio problems
Alternate Solution to Ratio Problem (HD Version)
Another Take on the Rate Problem
Find an Unknown in a Proportion
Find an Unknown in a Proportion 2
Proportions 2 exercise examples
Mountain height word problem
Your browser does not support video. Please get the latest version of Google Chrome, Firefox, IE, or Safari. Alternately, you can try the link below if you have VLC or another media player installed.
If the above player doesn't work, you can
try this direct link
.