Krista King Math
Perimeter of Rectangles
Young mathematicians have been using formulas for many years, so give them extra practice with complex problems using those same formulas. Your classes apply strategies to problems that require higher order thinking. Examples include one...
Krista King Math
Circumference of a Circle
Apple, cherry, pecan, or circumference: so many different uses for pi! Delve into the calculations relating to the circumference of a circle. The instructor applies the circumference formula to three different types of problems.
Krista King Math
Finding Perimeter Using the Pythagorean Theorem
What would right triangles be without the Pythagorean Theorem? Here learners see how to apply the Pythagorean Theorem to finding missing sides of triangles. The examples include both right and non-right triangles.
Curated OER
How Do You Find the Perimeter of a Rectangle?
The teacher illustrates a diagram to help you learn about perimeter. First, she adds the sides together to get the perimeter. Then, she shows how to use the perimeter formula to make it a bit simpler.
Curated OER
How Do You Find the Perimeter of a Shape?
Perimeter, area. Area, perimeter. Which is which? Perimeter is the distance around the edge of the shape. So all you have to do is add up the values.
Curated OER
How Do You Find the Perimeter of a Shape?
Perimeter, area. Area, perimeter. Which is which? Perimeter is the distance around the edge of the shape. So all you have to do is add up the values.
Curated OER
How Do You Find the Perimeter of a Rectangle?
The teacher illustrates a diagram to help you learn about perimeter. First she adds the sides together to get the perimeter. Then she shows how to use the perimeter formula to make it a bit simpler.
Curated OER
What's the Formula for the Perimeter of a Rectangle?
Discover how to find the algebraic formula for the perimeter of a rectangle through this tutorial. Your algebra learners will be guided towards the thinking steps around this concept. After showing the video, invite your class to model...
Curated OER
Area and Perimeter
Show learners how to calculate the area and perimeter of a rectangle. The presentation is a terrific tool for making this concept easy to understand.
Curated OER
How Do You Find the Width of a Rectangle if You Know its Length and Perimeter?
Use the formula for the perimeter of a rectangle to find the value of the width. Plug the given values of the perimeter and the length into the formula and solve. It is as easy as it looks.
Curated OER
What's the Formula for the Perimeter of a Rectangle?
Follow along and learn the steps of how to prove the formula for the perimeter of a rectangle.
Khan Academy
Khan Academy: Geometry: Challenging Perimeter Problem
Demonstrates how to solve a problem from the 2000 American Invitational Mathematics Examination which involves finding the perimeter of a rectangle covered by nine overlapping squares. [9:56]
Khan Academy
Khan Academy: Geometry: Area and Perimeter
Explains how to calculate the area of rectangles, squares, and triangles, in addition to the perimeter of rectangles and squares. Practice problems available. [12:20]
Khan Academy
Khan Academy: Algebra: Application Problems With Equation in One Variable
A video that demonstrates how to solve a perimeter word problem only in terms of width. A diagram is drawn to help explain the equation used. [2:01]
Khan Academy
Khan Academy: Interesting Perimeter and Area Problems
Demonstrates how to solve three different area and perimeter problems which appear to not have enough information to solve. [8:13]
CK-12 Foundation
Ck 12: Elem Math: Overview of Perimeter
[Free Registration/Login may be required to access all resource tools.] The video defines perimeter and uses a grid to count the perimeter of given shapes, followed by an example of adding the sides to find the perimeter.
Math Mammoth
Math Mammoth: Learn About Feet, Yards, and Miles: Measurement Lesson
Models how to measure and calculate length, area, and perimeter using inches, feet, yards, and miles, and how to do simple conversions between units. [8:39]
Khan Academy
Khan Academy: Perimeter, Circumference and Area Basics: Area and Perimeter
Explains how to calculate the area of rectangles, squares, and triangles, in addition to the perimeter of rectangles and squares.
Virtual Nerd
Virtual Nerd: How Do You Find the Perimeter of a Shape?
The perimeter is the distance around an object. Watch this tutorial to learn how to find the perimeter of a shape. [3:36]
Math Playground
Math Playground: Can Shapes With the Same Area Have Different Perimeters?
This video answers the question about the relationship between area and perimeter. Can shapes with the same area have different perimeters?
CK-12 Foundation
Ck 12: Elem Math: Overview of Area and Perimeter
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on the area and perimeter of squares and rectangles.
CK-12 Foundation
Ck 12: Elem Math: Overview of Area and Perimeter of Rectangle
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to find the area and perimeter of a rectangle.
CK-12 Foundation
Ck 12: Elem Math: Overview of Area and Perimeter of Squares
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to find the area and perimeter of squares.
Virtual Nerd
Virtual Nerd: How Do You Find the Perimeter of a Rectangle in a Coordinate Plane
How do you find the perimeter of a rectangle on a coordinate plane? This video will walk you through the process of using the coordinate plan to find the perimeter. [4:58]