Sides

In geometry, the term "sides" refers to the line segments that form the boundaries of a two-dimensional shape, such as a polygon. The number of sides a shape has depends on its type. Here are a few examples:

Triangle: A triangle has three sides.
Quadrilateral: A quadrilateral has four sides.
Pentagon: A pentagon has five sides.
Hexagon: A hexagon has six sides.

When counting the sides of a shape, it's important to remember that each side is a straight line segment that connects two vertices (corners) of the shape. The sides of a shape can be of equal length (as in the case of regular polygons) or of different lengths (as in the case of irregular polygons).

Understanding the concept of sides is crucial for identifying and classifying different geometric shapes, as well as for solving problems related to perimeter and area.

For example, to find the perimeter of a shape, you would add together the lengths of all its sides. Similarly, to calculate the area of a shape, you would use the lengths of its sides in the appropriate area formula for that shape.

Overall, knowing the number and properties of the sides of a shape is fundamental to understanding and working with geometric figures.

◂Math Worksheets and Study Guides Third Grade. Fractions

Fractions and Decimals

Worksheet/Answer key

Fractions and Decimals

Create 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.