Better Lesson
Better Lesson: Finding the Area Review and Assessment
Sixth graders find the area of rectangles, triangles, parallelograms, and trapezoids by using formulas or by composing into rectangles or triangles.
National Council of Teachers of Mathematics
Nctm: Illuminations: Igd: Area of a Parallelogram
This applet will show you how to divide the parallelogram into pieces, arrange them together to form a rectangle, and then use the formula for the area of a rectangle to find the area of the parallelogram.
Geometry Help
Geometry Help: Perimeter of Geometric Shapes
Explains the basic concept of the perimeter of geometric shapes with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Better Lesson
Better Lesson: Remarkable Rectangles
Rectangle is SO MUCH like triangle! Those darned angles--they'll get beginning learners! This is a fun way to practice rectangle!
OER Commons
Oer Commons: Diagonals of a Rhombus
In this lesson, students learn how the diagonals of a rhombus are related. They use interactive sketches to learn about the properties of the angles and diagonals of squares, rectangles, rhombuses, parallelograms, and other...
Quia
Ixl Learning: Perimeter
Brush up on your math skills relating to perimeter then try some practice problems to test your understanding.
Quia
Ixl Learning: Types of Quadrilaterals
Brush up on your math skills relating to the types of quadrilaterals then try some practice problems to test your understanding.
Quia
Ixl Learning: Area of Rhombuses
Brush up on your math skills relating to the area of rhombuses then try some practice problems to test your understanding.
PBS
Pbs Learning Media: Kid Vid: Scaling Up Rectangles
Watch a student think through a problem about how the area of a rectangle changes when both sides are increased by the same scale factor and use online tools to demonstrate understanding of concepts related to area and scale factors in...
E-learning for Kids
E Learning for Kids: Math: Market Place: Area
On this interactive site students learn to calculate the area of a rectangle and to use the correct notation.
Quia
Quia: Geometric Terms Concentration
Do you need practice remembering or learning different geometry vocabulary words and definitions? This concentration game is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if...
Quia
Quia: Geometric Terms Word Search
Do you need practice remembering or learning different geometry vocabulary words and definitions? This word search is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are...
PBS
Pbs Teachers: Architecture: Community Geometry
Identify architectural structures and objects in the community that represent different figures and types of geometry and mathematics.
Sophia Learning
Sophia: Coordinate Geometry of Rectangles: Lesson 4
This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a rectangle in a coordinate plane. It is 4 of 5 in the series titled "Coordinate...
ClassFlow
Class Flow: Shapes
[Free Registration/Login Required] This flipchart is designed for an early childhood classroom and focuses on circles, squares, rectangles, and triangles. Opportunities provided for student participation include drawing plane shapes,...
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Rectangles
Find a quick, concise explanation of rectangles. An example is given and clearly explained.
ClassFlow
Class Flow: Area Perimeter
[Free Registration/Login Required] This flipchart demonstrates how to calculate perimeters and areas of simple compound shapes that can be split into rectangles.
ClassFlow
Class Flow: Identifying Circles and Rectangles
[Free Registration/Login Required] A single flipchart page for grouping objects according to shape.
University of Cambridge
University of Cambridge: Nrich: Making Rectangles
On this one page website sharpen your logicand pattern recognition skills while working on this rectangle challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Fencing
On this one page website sharpen your logic, area, perimeter, and pattern recognition skills while working on this unique fencing challenge. The solution is available to double check your solution.
ClassFlow
Class Flow: Geoboards
[Free Registration/Login Required] Geoboards bring challenge into the classroom as the student uses methods to measure length, area, and perimeters of polygons.
Annenberg Foundation
Annenberg Learner: Math in Daily Life: Home Decorating
This exhibit is designed to show students that geometry really does apply to the real world. By taking viewers through a home decoration project, students learn how to calculate area of a rectangle and circle.
Fun Brain
Fun Brain: Shape Surveyor (Area and Perimeter of Rectangles)
Players are given the lengths of two sides of a series of rectangles and must calculate the area or perimeter of each rectangle.