Intro to circular function.
Author : mr jeff.
Reasons:Meaningful use of colour and graphics help to illusrate text.
I bet that person worked very hard . I can Tell they put a lot of time init because their is lorst information and i like the use of color and all the pictures. There is also at the bottom of the post words that run off the page and run back around leave from left and coming from the right , i thought that was nice. I also like how they coordinate the colored lettering and they pictures.