The document provides information about perimeter and area formulas for various shapes taught in 5th grade mathematics. It includes the objectives of understanding perimeter of squares and rectangles, explaining how to calculate perimeter of squares, rectangles, and triangles in daily life, solving perimeter problems for these shapes, and proving observations about perimeter through activities. It then outlines the content which will discuss different types of two-dimensional shapes, and provide the formulas to calculate perimeter and area of squares, rectangles, and triangles. Examples of applying these formulas to solve perimeter and area problems of various shapes are also given.