Ask HN: Tear down the design

We have operated under a lot of constraints...Any feedback will be useful...I don't where else to go apart from usability testing..that is why I am reposting this here. Feel free to critique this. I am here to learn :) Thanks again for taking time to see this.

URL: https://www.dropbox.com/s/arh897v0yoknh9k/FabMath-Final-Home-Page.jpg?dl=0