We again had a double-block of math today (equivalent to one full math class). We discussed volume formulas through homework review and independent practice. Students then worked on understanding the relative size of cubic units. We started by guessing if a cubic inch was larger or smaller than a cubic centimeter. Most students guesses larger because an inch is larger than a centimeter. I then showed blocks of this size to confirm. We then discussed the cubic foot and cubic yard. We talked about how cubic feet and cubic yards are actually really big units (demonstrated using rulers/yard sticks) and students gave examples of things that could be measured with such large units. Many students were surprised to find out that there are 1,728 cubic inches in a cubic foot and 27 cubic feet in a cubic yard. The common misconception is that because there are 12 inches in a foot only 12 cubic inches can fit into a cubic foot. What students fail to realize is that you multiply the number of inches for each side or 12 * 12 * 12.
Due to our time, I did not assign new homework for tonight, but students can certainly work on IXL skills M29, EE13, 14, 15 or 16. With the Newton group we talked about the problem from Monday night's homework where students needed to insert parentheses into the equation to make it true. We used two of the examples to walk through some strategies to solving the problems. NO HOMEWORK TONIGHT!
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April 2020
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