Activity 2 (Small-Group Activity)
Area and Perimeter on a Geoboard
New Carpets and BaseboardsYou may have seen floor plans or other objects that are drawn to scale. In many occupations, a large object must be pictured in proportion to its actual shape and size. The Reference Sheet has scale drawings of several shapes. Suppose these shapes are really drawings of floors that are to be carpeted and new baseboards are to be installed.
You see a scale (the line labeled 10 m) on the Reference Sheet that represents 10 meters. Use this scale to find measurements of the shapes and then to complete the table below. You may use a ruler. For each shape, find the area to be carpeted and the perimeter measurement for new baseboards. Round final answers to the nearest tenth of a meter.
A Paper BridgeYou may have noticed that construction materials come in a variety of sizes and shapes.
Your task is to construct three bridge designs from regular notebook-sized paper and to see which design is the sturdiest. Build a structure from each sheet of paper that is at least 5 cm wide and spans the 15 cm between tables.
After creating a bridge design, determine how much weight it will hold as follows
Record your results in a table like the one below.
Area 10 Mathematics and Technology Professional Development Center
Permission is granted to duplicate these materials for classroom use.
Last updated on 1/30/1999