|Covering and Surrounding:
Investigation 2: Changing Area, Changing Perimeter
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|Multiple-Choice Skills Practice
|Did You Know?
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Pearson Video Tutor
|Core Support Files
|Geoboard – Use geoboards to illustrate area, perimeter, and rational number concepts.
|Geoboard - Circular – Use circular geoboards to illustrate angles and degrees.
|Geoboard - Coordinate – Rectangular geoboard with x and y coordinates.
|Geoboard - Isometric – Use geoboard to illustrate three-dimensional shapes.
Practice identifying types of triangles: obtuse, right, isoleses and equilateral. Learn how to find the area of a triange and use the Pythagoran Theorem to find the length of the hypotenuse.
Identify different polygons. Learn to find the perimeter of a rectangle and the area of a rectangle.
Circle: find the circumference and the area.
Review what you've learned about geometry
Area and Perimeter
Selected Homework from ACE
In Covering and Surrounding student work with investigations leads them to:
Understand area and relate area to covering a figure;
Understand perimeter and relate perimeter to surrounding a figure;
Develop strategies for finding areas and perimeters of rectangular shapes and non-rectangular shapes;
Discover relationships between perimeter and area. including that each can vary while the other stays fixed;
Understand how the areas of simple geometric figures relate to each other (e.g. the area of a parallelogram is twice the area of a triangle with the same base and height);
Develop formulas and procedures-stated in words and/or symbols-for finding areas and perimeters of rectangles, parallelograms, triangles, and circles;
Develop techniques for estimating the area and perimeter of an irregular figure; and
Recognize situations in which measuring perimeter or area will help answer practical questions.