Thank you for your post. I wanted to reply to this one, specifically, because I teach a course that is 100% project based, which I agree is a great approach to knowledge transfer and open ended learning.
I also grade. I thought grades would be a motivator for my students. What I’ve learned is that for some it is and for some it isn’t. Last year I had a few students skip entire groups of assignments because they did the math and were okay with getting a zero for 15% of their grade. Clearly grades didn’t motivate these students.
I grade for multiple reasons – some I’m learning aren’t good reasons. I grade with lecture quizzes in an attempt to improve lecture participation. This isn’t the best approach so this coming fall I’m going to continue lecture based grading but with the Top Hat learning system integrated into my lectures to make them more interactive – I hope it helps. I know there are many other ways to improve lectures, too.
I also grade because my department is ABET accredited and I have to provide lecture, assignment and assessment proof that my students are performing well enough against ABET dictated learning objectives. Even when I don’t agree with the learning objectives or the recommended assessment methodologies.
Finally I grade to give feedback. This is the only one I really believe in. I learned in some Engineering Education classes last spring the true value of feedback. Assess the students, provide thorough feedback and let them resubmit the work. There is research that shows this improves knowledge transfer. I suppose that I could provide the feedback without the grade but my department isn’t ready for that yet.
My students learn the most from the build and test phase of their project (it is Mechanical Engineering Senior Design Capstone, where they design, build and test an actual device) where they experience failure and trial and error. Parts don’t fit together the way they thought. Friction makes things difficult, etc. I’m facilitating this learning and, for now, have to assess them on it with quantifiable results.
I guess the bottom line is that project based learning IS awesome but it isn’t the end of assessments (at least not yet or not in this university/department/class). And that I’m experimenting with different classroom and grading techniques to minimize the affects of learning-for-the-test in my class the best ways I can. Each year it is a slightly different experiment. I originally thought (naively) that in four or five years I’d have this teaching thing down pat. In reality it is a constantly evolving, moving target. I like it better that way. Or else I would lose my desire to learn and evolve as a teacher.