We focused on getting ready for a test on solving geometric problems. First we reviewed reflections across the x-axis which change the position of the y-coordinate of all the points in a figure such that (x, y) becomes (x, -y). Then we reviewed reflections across the y-axis which change the position of the x-coordinate of all the points in a figure such that (x, y) becomes (-x, y). Then we focused on finding the surface area of geometric figures by using a net. Next we practiced finding the area of irregular shapes.
Solving Problems Involving Scale Drawings – Drew practiced using scale drawings of geometric figures to calculate measurements. We practiced naming and finding the area of geometric shapes such as triangles, trapezoids, parallelograms, and rectangles. Then we practiced solving word problems requiring us to use formulas involving area.
Drew completed reading a fantasy story about an extremely enormous egg. We discussed story details, the plot, main characters, vocabulary words, and author's intent. He completed an activity on compound sentences joined by a conjunction.
Topic 11 Solve Area, Surface Area, and Volume Problems
Lesson Outline
We learned to find the area of special polygons by composing them into right triangles, rectangles, or squares to add their areas. Then we found the area of special quadrilaterals by decomposing them into triangles and other shapes. Then we applied these techniques in the context of solving real-world and mathematical problems.
Drew read and discussed an article about the Bermuda Triangle. We delved into the vocabulary, the story details, the author's intent, and his interpretation of what he thought happened to Flight 19. We explored the compound sentence, and learned to distinguish it from a simple sentence, and a sentence with a compound subject, or predicate.
We learned to use proportional relationships to solve multistep ratio and percent problems. Then we represented proportional relationships by equations.
