Quadrilateral
A quadrilateral is a polygon that has four sides, four vertices, and four angles. The sum of the interior angles of a quadrilateral always adds up to 360 degrees. There are various types of quadrilaterals, each with its own unique properties:
- Parallelogram: A quadrilateral with opposite sides that are parallel and equal in length. The opposite angles are also equal.
- Rectangle: A parallelogram with all angles being right angles (90 degrees).
- Square: A special type of rectangle with all sides being equal in length.
- Rhombus: A parallelogram with all sides being equal in length.
- Trapezoid: A quadrilateral with at least one pair of parallel sides.
Understanding the properties of quadrilaterals is important in geometry and can help in solving various mathematical problems involving shapes and angles.
Remember, a quadrilateral is defined by its four sides and four angles, and the specific properties of each type of quadrilateral help to distinguish them from one another.
.◂Math Worksheets and Study Guides Third Grade. Ordering and Comparing Numbers
Study Guide
Ordering and Comparing Numbers 
Activity Lesson
Duck Race - Least to Greatest Worksheet/Answer key
Ordering and Comparing Numbers Worksheet/Answer key
Ordering and Comparing Numbers Worksheet/Answer key
Ordering and Comparing Numbers Worksheet/Answer key
Whole Numbers Worksheet/Answer key
Ordering and Comparing Numbers Vocabulary/Answer key
Ordering and Comparing Numbers
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyCreate And Print more Comparing Numbers worksheets with Comparing Numbers Worksheets generator
The resources above cover the following skills:
Number and Operations (NCTM)
Understand numbers, ways of representing numbers, relationships among numbers, and number systems.
Understand the place-value structure of the base-ten number system and be able to represent and compare whole numbers and decimals.
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.
Connections to the Grade 3 Focal Points (NCTM)
Number and Operations: Building on their work in grade 2, students extend their understanding of place value to numbers up to 10,000 in various contexts. Students also apply this understanding to the task of representing numbers in different equivalent forms (e.g., expanded notation). They develop their understanding of numbers by building their facility with mental computation (addition and subtraction in special cases, such as 2,500 + 6,000 and 9,000 - 5,000), by using computational estimation, and by performing paper-and-pencil computations.