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Content Area: Math
Index: 4.2D Grade 6 CPI 1
Standard: 4.2 - Geometry and Measurement
Strand: D - Units of Measurement
Cumulative Progress Indicator: 1 - The student will select and use appropriate units to measure angles, area, surface area, and volume.
Grade: 6
Sample Activities:
· Students are given a transparent square grid to place over a worksheet with triangles drawn on it. Using the grid to measure, they find the base, height, and area of each triangle, recording their findings in a table. They discuss patterns that they see, developing their own formula to find areas of triangles.
· Students find the perimeter of a figure by taping a string around it and then untaping and measuring the string. For something large, like the classroom, they might construct and use a trundle wheel.
· Students first estimate the perimeter (or area, volume, or surface area) of a classroom object, then measure it, determine its perimeter, and compare their answers to their estimates. Objects which might be used include books, desks, closets, doors, or windows.
· Students use various same-shape pattern blocks and arrange as many as are needed around a point to complete a circle. They discover the size of each angle since there are 360 degrees in one circle. For example, if it takes six (green) triangles, then each angle must be 60 degrees (360 degrees ÷ 6).
· Students are given a sheet with rectilinear figures (only right angles) on it, such as the letter "E", and a transparent square centimeter grid that they can place over each of the figures. By counting the squares, they can find the area of each figure; by counting the number of units around it, they can determine its perimeter.
· Students bring cereal boxes from home, cut them apart, and determine their surface areas.
· Students find the volumes of different backpacks by using familiar solids to approximate their shape. They compare their results and write about which backpack they think would be "best" and why.
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