Today was the first day of our mini-unit on area. We are trying to approach area from a "big picture" concept: what do you think area is? Is there always a formula? Can I estimate an irregular area? Can I find an accurate area for a space for which I don't know a formula? How can I find area by surrounding a figure with a rectangle? What does it mean to "slide a vertex" on a triangle? Can I find an area bordered by linear functions in the coordinate plane? Since we live in a 3-D world, isn't all area actually surface area (cause everything has a thickness)?
We got to formulas for rectangles and parallelograms today (A=bh), but we spent most of our time on finding area by different methods. Some in-class work is attached below; it is practice finding area by surrounding with a rectangle. Some notes are attached as well.
HW #1, due next time we meet, is pp 413-415: 1-13, 15-19, 22-24. If you multiply or divide two numbers to get an answer, write them down to show your work.
We got to formulas for rectangles and parallelograms today (A=bh), but we spent most of our time on finding area by different methods. Some in-class work is attached below; it is practice finding area by surrounding with a rectangle. Some notes are attached as well.
HW #1, due next time we meet, is pp 413-415: 1-13, 15-19, 22-24. If you multiply or divide two numbers to get an answer, write them down to show your work.
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