PreK-12 Engineering
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 Ms. Barbara Bratzel is a teacher at Shady Hill School, a preK through 8 independent school in Cambridge, Massachusetts. Barbara teaches at both ends of the school spectrum, currently teaching both kindergarten science and eighth-grade physics. This is her fifteenth year at Shady Hill, before which she taught math and biology in both middle and high school.

 Barbara first became interested in teaching math and science through engineering about 10 years ago. Chris Rogers, a professor in Mechanical Engineering at Tufts University’s School of Engineering, brought a portable wind tunnel to Shady Hill and tested it with Barbara’s third grade class. Barbara says that, “The kids loved it!” Once her interest in engineering was sparked, Barbara continued to work with Chris on other projects. Through her increased interest in the subject, Barbara created Physics by Design, which is an eighth-grade class that teaches physics through engineering. Four years ago this course was an experimental course, now it has become an established part of the eighth grade curriculum at Shady Hill.

 When asked about her comfort level with engineering, Barbara revealed that she feels quite comfortable in teaching the engineering component. She continues that, “Though I have learned a lot on my own, I wish that I had formal training in engineering.” Barbara’s enthusiasm for the subject shows through in her Physics by Design course. Through the student grapevine the class has become known as a course that should not be missed. Barbara states that “often more students sign up to take it than we are able to accommodate.”

Another component that Barbara uses in her classes is robotic LEGO units. Through the design challenges that she sets forth students explore a math or science principle through engineering using LEGO manipulatives. When asked how her students respond to the engineering based lessons, Barbara answers, “The students love them, particularly those involving LEGO and RoboLab.”

 Barbara states that the engineering projects make physics come alive. “Physics goes from being something abstract to being something they can apply right away. I try to make the building projects tie in fairly closely with the curriculum. For example, after studying torque and center of gravity, the students build balances out of LEGO that are accurate to within half a gram. You cannot make that precise a balance without dealing with center-of gravity and torque issues, so the students are forced to use what they have learned.”

 One of the problems in offering an engineering course can be the accumulation of materials. In response to this, Barbara looked to LEGO as a source of non-consumable materials. “To make the class go smoothly, I find that I need a computer for every lab group and plenty of LEGO. Luckily, I’ve now got a classroom set of laptops and small mountain of LEGO.” It does however take some time to acquire the materials, but every year the supply becomes larger and more diverse.

 As words of advice for other teachers considering adding engineering to their curriculum, Barbara says that the trouble it takes is well worth it. It becomes interesting and engaging for the students as well as the teacher. “Teaching engineering has allowed me to become a coach more than a teacher...Much of the learning occurs naturally as they work on their projects.”

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