Web based student nutrition activity

This is a pilot activity designed to demonstrate your ability to build the type of activities we are looking for. I we like it, we need about 100 more, you will be one of the freelancers we use. Create a web activity for students to demonstrate their knowledge of foods and nutrition. The activity begins on a cafeteria buffet. The student grabs a tray and starts adding food from the buffet. As they add items gauges should update. A quantity gauge should update(this should be a dial gauge scale to read "Not Enough" , "Just Right" through "Too much". ) A "my plate" pie chart should color in based on the type and quantity of food selected. Art used can be any clip art, as we would substitute our own custom art later. Individual food values need not be accurate. After initial prototype is approved. Pictures and food values would need to come from a sql database. Also values for filling in quantity gauge and my plate should be settable in a SQL table. App should be cross platform compatible (ie,chrome,firefox,safari etc.). Bid is for prototype ONLY.