Hexagon

A hexagon is a polygon with six sides and six angles. The word "hexagon" comes from the Greek word "hex" which means "six," and "gonia" which means "angle."

Properties of a Hexagon

1. Number of Sides: A hexagon has six sides.

2. Number of Angles: A hexagon has six angles.

3. Sum of Interior Angles: The sum of the interior angles of a hexagon is 720 degrees.

4. Sum of Exterior Angles: The sum of the exterior angles of a hexagon is 360 degrees.

5. Regular and Irregular Hexagons: A hexagon can be regular (all sides and angles are equal) or irregular (sides and/or angles are of different lengths/measures).

Examples of Hexagons

Examples of hexagons in real life include beehives, nuts and bolts, and some types of crystals and snowflakes.

Formulas for Area and Perimeter

1. Perimeter of a Hexagon: P = 6 * side length

2. Area of a Regular Hexagon: A = (3/2) * (side length) * (apothem length)

◂Math Worksheets and Study Guides Second Grade. Comparing Objects

Measurement: Clown Shapes

Activity Lesson

Measurement: Mass

Activity Lesson

Measurement: Sea Shape Size

Vocabulary/Answer key

Comparing Objects

Vocabulary/Answer key

Comparing Objects

The resources above cover the following skills:

Measurement (NCTM)

Understand measurable attributes of objects and the units, systems, and processes of measurement.

Recognize the attributes of length, volume, weight, area, and time.

Compare and order objects according to these attributes.

Understand how to measure using nonstandard and standard units.

Select an appropriate unit and tool for the attribute being measured.

Apply appropriate techniques, tools, and formulas to determine measurements.

Use tools to measure.

Grade 2 Curriculum Focal Points (NCTM)

Measurement: Developing an understanding of linear measurement and facility in measuring lengths

Children develop an understanding of the meaning and processes of measurement, including such underlying concepts as partitioning (the mental activity of slicing the length of an object into equal-sized units) and transitivity (e.g., if object A is longer than object B and object B is longer than object C, then object A is longer than object C). They understand linear measure as an iteration of units and use rulers and other measurement tools with that understanding. They understand the need for equal-length units, the use of standard units of measure (centimeter and inch), and the inverse relationship between the size of a unit and the number of units used in a particular measurement (i.e., children recognize that the smaller the unit, the more iterations they need to cover a given length).

Connections to the Grade 2 Focal Points (NCTM)

Geometry and Measurement: Children estimate, measure, and compute lengths as they solve problems involving data, space, and movement through space. By composing and decomposing two-dimensional shapes (intentionally substituting arrangements of smaller shapes for larger shapes or substituting larger shapes for many smaller shapes), they use geometric knowledge and spatial reasoning to develop foundations for understanding area, fractions, and proportions.