Content Area: Math

 

Index: 4.2E Grade 7 CPI 1

 

Standard: 4.2 - Geometry and Measurement

 

Strand: E - Measuring Geometric Objects

 

Cumulative Progress Indicator: 1 - The student will develop and apply strategies for finding perimeter and area.

·        Geometric figures made by combining triangles, rectangles and circles or parts of circles

·        Estimation of area using grids of various sizes

 

Grade: 7

 

Sample Activities:

 

·        Students complete a worksheet showing several rectangles on grids that are partially obscured by inkblots. In order to find the area of each rectangle, they must use a systematic procedure involving multiplying the length of the rectangle by its width.

 

·        Students develop the formula for finding the volume of a rectangular prism by constructing and filling boxes of various sizes with centimeter or inch cubes and looking for patterns in their results. As a journal entry, they describe the "shortcut" way to find the volume

 

Sample Assessment Question:

 

·        A rectangular tile measures 2" x 3". What is the fewest number of tiles that are needed to completely cover a square region 2 feet on each side? 

o       a) 12

o       b) 24 

o       c) 48 

o       d) 96

 

The correct answer is D.