Rectangle
A rectangle is a four-sided polygon with opposite sides that are equal in length and four right angles (90-degree angles). The opposite sides of a rectangle are also parallel to each other.
Properties of a Rectangle:
- Equal opposite sides: The length of opposite sides of a rectangle are equal.
- Right angles: All four angles of a rectangle are right angles (90 degrees).
- Diagonals: The diagonals of a rectangle are equal in length and bisect each other.
- Area: The area of a rectangle is calculated as length multiplied by width (A = l * w).
- Perimeter: The perimeter of a rectangle is calculated as the sum of all four sides (P = 2l + 2w).
Rectangles are commonly found in everyday objects such as doors, windows, and picture frames.
[Rectangle] Related Worksheets and Study Guides:
.◂Math Worksheets and Study Guides Third Grade. Fractions
Study Guide
Fractions 
Worksheet/Answer key
Fractions Worksheet/Answer key
Fractions Worksheet/Answer key
Fractions Worksheet/Answer key
All About Fractions Worksheet/Answer key
Fractions and Decimals Worksheet/Answer key
Fractions and Decimals
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyCreate And Print more Fractions worksheets with Comparing Fractions, Equivalent Fractions, and Simplifying Fractions
The resources above cover the following skills:
Number and Operations (NCTM)
Understand numbers, ways of representing numbers, relationships among numbers, and number systems.
Develop understanding of fractions as parts of unit wholes, as parts of a collection, as locations on number lines, and as divisions of whole numbers.
Algebra (NCTM)
Use mathematical models to represent and understand quantitative relationships.
Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.
Grade 3 Curriculum Focal Points (NCTM)
Number and Operations: Developing an understanding of fractions and fraction equivalence
Students develop an understanding of the meanings and uses of fractions to represent parts of a whole, parts of a set, or points or distances on a number line. They understand that the size of a fractional part is relative to the size of the whole, and they use fractions to represent numbers that are equal to, less than, or greater than 1. They solve problems that involve comparing and ordering fractions by using models, benchmark fractions, or common numerators or denominators. They understand and use models, including the number line, to identify equivalent fractions.