Curated OER
Circles and Rectangles
In this shapes worksheet, students cut out five circles and six rectangles of various sizes. These manipulatives can be used for sorting or according to shape and/or size.
Curated OER
Rectangles Tracing
In this math worksheet, learners study the geometric shape of the rectangle by tracing 10 shapes and coloring them different colors.
Curated OER
Daily Upkeep 8
In this math worksheet, 4th graders complete a quick set of math problems where they first look at two rectangles and find the difference between the two in centimeters. Then, they compare two figures are select which fraction best...
Curated OER
Minimize Perimeter
Students practice calculating the perimeter of different sized rectangles. Individually, they identify the derivations of a function that can show the perimeter and determine how to minimize the perimeter within a fixed area. They use...
Curated OER
Minimize Perimeter -- Lecture
Young scholars are introduced to the concept of perimeter. As a class, they listen to a lecture describing the derivations of a function that describes perimeter. They calculate the minimum perimeter of a rectangle and determine the...
Curated OER
Exploring the Golden Rectangle
Students will construct a golden section and a golden rectangle and study their characteristics and connections with the Fibonacci series. They import pictures from the internet and download them into the Sketchpad. Using their "golden"...
Curated OER
From a Square to a Rectangle
Eighth graders solve problems involving percentage increases and decreases. Using given percentages, 8th graders transform a square into a rectangle. They apply the area formulas for squares and rectangles.Students observe the percent...
Curated OER
Calculate It
Fourth graders find the area and perimeters of squares and rectangles using a calculator to check their multiplication. They use the appropriate formulas to find the area and perimeter of the given geometric shapes.
Curated OER
Seeing Shapes
Students study a variety of geometric shapes by taking pictures of items representing the shapes with a digital camera. They identify the shapes by using software to paint on the image.
Curated OER
How Much Grass Should I Buy?
Students examine a variety of real life situations in which they must access information, select an appropriate formula, and calculate an answer. A rectangular piece of grass provides an opportunity for the exploration of this...
Curated OER
What Does It Take?
First graders study the attributes of circles, squares, triangles and rectangles. They sort shapes that are the same and those that are different into groups.
Curated OER
Elastic Band Shapes
Students identify basic shapes (triangle, square, rectangle, circle), create shapes with different body parts, and create shapes at various levels (high, low)
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Quadrilateral Exercises
Twenty-four problems cover the topic of working with quadrilaterals in different settings. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
National Council of Teachers of Mathematics
Nctm: Illuminations: Igd: Area of a Rectangle
Use this interactive tool to learn how to find the area of a rectangle. Click on "Instructions" for details on how to use this tool. Click on "Explore" for more ideas.
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: Russian Toy Store: 2 D Shapes
Mattie and her four sisters are visiting a toy store. Can you help them find different shapes in the toy store?
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.
Wolfram Research
Wolfram Math World: Golden Rectangle
This site contains the definition for the term "Golden Rectangle," complete with detailed pictures, charts, and explanations.
Wolfram Research
Wolfram Math World: Rectangle
MathWorld provides the definition of a rectangle and the area formula of a rectangle.
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.
Primary Resources
Primary Resources: 2 D and 3 D Shapes
Here is a huge collection of teacher resources for teaching 2-D and 3-D shapes. Includes smartboard and PowerPoint presentations, as well as worksheets and helpful hints.
Other
Symmetry Around the World
This resource provides information about symmetry, and everywhere it can be found.
Math Open Reference
Math Open Reference: Quadrilaterals
A complete reference guide to quadrilaterals including squares, rectangles, parallelograms, trapezoids, and rhombus. It provides definitions and interactive activities that enhance further explanation.
Khan Academy
Khan Academy: Name Shapes 1
Practice identifying circles, triangles, squares, and rectangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.