The Project Idea Cards are free downloadable resources, standards-based, with project ideas from math and science to history and English. Each project card lists a driving question, a project description, the standards the project addresses, the anticipated outcomes, and reflection questions to help teachers bring the project to life in their own contexts. They were developed by teachers and PBLWorks. You can search, as well as sort by grade level, subject area, and standards (including NGSS).