Simple Areas and Perimeters

This worksheet introduces areas and perimeters as different features of polygons and includes a number of practice problems.

Simple Areas

This worksheet introduces the concept of area and has simple practice problems that allow students to practice counting single units and adding them up to a particular area.

Rainfall in Different Geographical Areas

This experiment helps students understand the nature of precipitation and how weather is predicted by having them study the amount of rainfall during a particular time, in their neighborhood.

Linking Length, Perimeter, Area, and Volume

This unit covers many geometric concepts over the span of four lessons. In the first lesson, students will explore ratios and scale factors by comparing perimeters and areas. In the second and third lesson, students will compare the volumes and surface areas of two rectangular prisms. The last lesson provides an interactive applet that ties all the relationships together.

Area and Volume Equations

This reference sheet lists all of the major area and volume formulas for 2D and 3D figures. In particular, the various formulas for triangles are listed as well as area and volume formulas for irregular prisms.

Area Formulas

This reference provides a list of formulas that should be used when calculating the area of 2-D objects.

Area Conversions

This reference provides a table that shows the ratios between common measurements of area, including acres, square feet, and square meters.

Area Formulas

This resource provides lessons that will help students derive the area formulas for triangles, parallelograms, and trapezoids. Students will also explore finding areas of irregular figures using estimation or decomposition methods. This website provides various activity sheets and interactive tools that students can use in the derivation of these equations.

Geometry: Area and Perimeter

This lesson plan provides teachers with a lesson on introducing their class to areas and perimeters and solving simple area and perimeter problems.

Apple Pi

In this activity, students will learn about the ratio of circumference and diameter, a number with the variable name "n" (pi). Students will figure this out by measuring various circular objects that they will bring into class. In the second part of the exercise, students will work with finding areas of whole circles and fractions of circles. The activity includes a way to show students how the area formula can be derived.