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# Award-Winning Private Computer Science Tutoring in Elgin, IL

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### Private In-Home and Online Computer Science Tutoring in Elgin, IL

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## Session Summaries by Computer Science Tutors

The student was sharp and ready for work as usual. The subject was the use of the properties of polygons in order to solve for perimeters, areas, and related measures (side lengths, angles, etc.). He seemed to understand the material well enough, so we moved into his homework and I observed his practices. I explained the source of (ap / 2) to make it more memorable (ap / 2 is the total area of all triangles with a peak at the center of a regular polygon and with one side of that polygon as a base). That seemed to help him quite a bit. We ended on a couple algebra problems. The first required remembering that the product of the diagonals of a rhombus divided by two is its area. The second required noticing that "base" isn't a strict concept, particularly in the context of parallelograms. Sometimes one base will be long and vertical, the other short and horizontal, and the alignment might be very distracting, but as long as the opposite sides are parallel we know the area to be bh / 2 with either base and either height. The student understood all of his material well.