Mathster is a One Page App, Digital Product, Landing Page, website.
This website has unfortunately been redesigned or gone offline, so I have removed the direct link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this Archive.org link. FYI: the site was first featured on 09 May 2011.
Category App, Digital Product, Landing Page,
Published 9 May 2011