NGSS Sample Performance Assessments

The sample Performance Assessments were released last month and I'm just now getting a chance to sit down and look at it. And it will take some time to digest it. Each is 17 pages and includes background information, description of the tasks, time lines and examples. The Solar Oven is the only one that seems primarily Physics. As you read it, you may come to realize its a fairly complex assignment as I did. Each time I thought I understood how to implement it in my classroom another page reveals another layer. I don't know how this can be achieved with hands on materials in my classroom.