Here's a couple things
I've built recently.

Note: I was the programmer on these projects, so design and content were done by others.
The code (HTML, CSS, jQuery, PHP, MySQL, etc...) was done by me.

Nature Watch

NatureWatch allows user to track Canadian species of frogs & plants, collecting scientific information on nature to understand our changing environment.

Website: naturewatch.ca

Nomenclature101

A quiz tool for University Chemsitry students, Nomenclature101 allows students to name and draw molecules on their computer, and identify functional groups.

Website: nomenclature101.com

Wijit

A virtual game show, designed to help students memorize important facts about constitutional law. Questions available in multiple formats (true/false, multiple choice & short answer).

Website: commonlaw.uottawa.ca/wijit