Household chemicals are mysterious. They kill. They kill germs in our toilet. They clean the sink and the sink drain. But do we understand what they do? How can we use the process of understanding as a wonderful problem in logical reasoning? They are pretty poisons. How do they work? The science world is a puzzling place. Many people think of science as an activity where we memorize what was discovered by others. But can we discover it ourselves? Can our children? How can we set up tasks for our children where we don’t have to just tell and they don’t have to just memorize? Where we can watch their way of thinking grow? This is a project I have presented to 11 year old children year after year for decades. It vitally interests them while they are figuring it out, and then, suddenly, it is over. Knowing the answer is an anticlimax. A let-down. It isn’t fun any more. But the ideas remain and are useful in their lives. And, without knowing it, they have grown to accept the possibility of change. Chemicals can change in logical ways. It isn’t magic after all.
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Meredith Olson Ph.D. Dr. Meredith Olson, known affectionately as Doc "O" to her students, has taught elementary, middle school and high school math and science in Seattle for nearly 60 years. Her primary goal is in improvement of pre-college engineering education. By going to lab to work on contraptions every day, her students come to understand properties of the mechanical world. “It has been a long and interesting trip. Studying some metallurgy in grad school. Evening classes. After a full day of high school teaching. Consulting for JPL as the Mars Pathfinder Educator. Weekends. Working in the summer with UNESCO in Zimbabwe, Kenya, and Uganda. Teaching dozens of weekend and week-long summer teacher workshops in South Carolina and Montana. Being a consultant and curriculum designer for Health and Physiology education in Washington, Oregon, Idaho, Montana, and Alaska. Being a summer adjunct University instructor for more than 20 years in Seattle, Idaho and Montana. Teaching teachers. Teaching students every day, every year for 59 years. Observing how learning happens. Becoming aware when real learning isn’t happening. When it is just “show.” When it is just teacher–pleasing to get a grade. To get a credit. To get a university degree.” See Dr. Olson’s open letter outlining her philosophy of lesson design, available on the JPL website - Exploring Preface pp 11-13 http://mars.jpl.nasa.gov/education/modules/GS/GS07-19_preface.pdf Dr. Olson believes that children must construct their own understanding from active design and assemblage of contraptions. By testing, failing, remodeling, and trying again, we come to see the structure when we look. By carefully examining materials we have, we may perceive how to use them in new and unexpected ways. Children begin to understand the engineering process. Besides, it is fun.
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