CK-12 Foundation
Ck 12: Math Grade 2
Browse resources related to second-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
CK-12 Foundation
Ck 12: Math Grade 3
Browse resources related to third-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
CK-12 Foundation
Ck 12: Math Grade 4
Browse resources related to fourth-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
Cuemath
Cuemath: Measurement
A comprehensive guide for learning all about measurement including the metric system, surface area, perimeter, volume, area, time, solid shapes, unit conversion, solved examples, and practice questions.
Math Drills
Math Drills: Measurement Worksheets
Download these free worksheets to sharpen your measurement skills. Sheets focus on temperature, conversion, area and perimeter, volume, and more.
E-learning for Kids
E Learning for Kids: Math: Eiffel Tower: Length
Measure up the lengths and sides of the Eiffel Tower with Juliette and read time to the minute.
AAA Math
Aaa Math: Perimeter of a Rectangle
This resource shows students how to calculate the perimeter of a rectangle. It provides self-check exercises and simple learning games to practice the skill.
AAA Math
Aaa Math: Perimeter of a Square
Students can practice finding the perimeter of squares through the self-check exercises and timed learning games provided on this site.
National Council of Teachers of Mathematics
The Math Forum: Elementary Geometry Circles
The Math Forum offers an archive of question and answer sessions on circles and how they relate to geometry.
Shodor Education Foundation
Shodor Interactivate: Lesson: Length, Perimeter, and Area
This lesson plan examines the mathematical concepts of length, perimeter, and area. Resources are included that support teachers and students.
University of Georgia
University of Georgia: Texas Area Estimate
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
National Council of Teachers of Mathematics
The Math Forum: Seventh Grade Math: Area and Perimeter
Learn how to enlarge drawings, figure out how much tile to buy to cover a specific floor, and learn about area and perimeter. These and other lesson plans are provided, including a fun interdisciplinary plan featuring dragons.
University of North Carolina
A Dictionary of Units of Measurement
This site contains an extensive list of various units of measurement known internationally and across several disciplines. Unit symbols are also included.
Shodor Education Foundation
Shodor Interactivate: Shape Explorer
Learners practice calculating the perimeter and area of a given figure. The interactive activity and teacher resources are included.
Texas Instruments
Texas Instruments: How Totally Square Part Ii
Students understand the concept of perimeter of a square, and discover its formula.
Texas Instruments
Texas Instruments: Mapping a Leaf
In this activity, students will identify and record ordered pairs from a coordinate plane. They will examine symmetry about the axes, reflections, and symmetry in nature. They understand geometric concepts like area and perimeter, and...
Texas Instruments
Texas Instruments: Perimeter Patterns
In this activity, students investigate patterns in ordered pairs generated by constructing a sequence of similar shapes. They then use the patterns and the calculator to predict the perimeter of a specific shape in the sequence.
Texas Instruments
Texas Instruments: Geoboard App
Students use the Geoboard App to measure arcs, line segments, area, and perimeter, as well as rotate, reflect, and translate objects.
Texas Instruments
Texas Instruments: Finding Patterns and Graphing Functions
This activity has students find patterns in the areas and perimeters of a given series of figures. Students' then use graphing calculators to graph the values and to find linear and quadratic functions to describe the patterns.
Texas Instruments
Texas Instruments: Bring Geometry to Life
In this activity, learners use the Geometer's Sketchpad application to construct Euler's Line, Pythagorean Proof, and Fermat's point. They also investigate the concept of perimeter.
Texas Instruments
Texas Instruments: Comparing Perimeters and Areas
Students use a graphing calculator to find maximum and minimum values for area and perimeter problems.
Texas Instruments
Texas Instruments: Easy Programming of Geometry Formualas
In this activity, students perform area, surface area, perimeter, and volume.
Texas Instruments
Texas Instruments: Math Today Wildfires Nearly Snuffed
Students can use the data to explore the relationship between area and perimeter for rectangles and circles and they will make generalizations about the shape of the rectangle that will produce the smallest perimeter.
Texas Instruments
Texas Instruments: Building a Garden Fence
In this activity, students can use basic concepts of perimeter and area to investigate a classic problem situation requiring maximization. They must decide how to build a garden fence to enclose the largest possible area.