Length
Length is a measure of how long an object is from one end to the other. It is one of the fundamental measurements in mathematics and is often measured in units such as centimeters, meters, inches, feet, or yards.
Units of Length
There are various units of length used for measurement. Some common units include:
- Millimeter (mm)
- Centimeter (cm)
- Meter (m)
- Kilometer (km)
- Inch (in)
- Foot (ft)
- Yard (yd)
Measuring Length
Length can be measured using various tools such as rulers, meter sticks, tape measures, or even by pacing out the distance. It's important to use the appropriate unit of measurement depending on the length being measured.
Comparing Lengths
Lengths can be compared using the concepts of longer than, shorter than, or equal to. For example, if one object is 10 centimeters long and another is 15 centimeters long, we can say that the second object is longer than the first.
[Length] Related Worksheets and Study Guides:
.◂Math Worksheets and Study Guides First Grade. Shapes
Study Guide
Shapes 
Activity Lesson
Tangram Animals Activity Lesson
A Shape Picture Worksheet/Answer key
Shapes Worksheet/Answer key
Shapes Worksheet/Answer key
Shapes Worksheet/Answer key
Space Worksheet/Answer key
Shapes Worksheet/Answer key
Shapes Worksheet/Answer key
2D Space Worksheet/Answer key
2D Space Worksheet/Answer key
2D Space Worksheet/Answer key
Shapes Worksheet/Answer key
2D Space Worksheet/Answer key
2D Space Vocabulary/Answer key
Shapes Vocabulary/Answer key
Shapes
Activity LessonActivity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
Algebra (NCTM)
Understand patterns, relations, and functions.
Sort, classify, and order objects by size, number, and other properties.
Geometry (NCTM)
Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships.
Recognize, name, build, draw, compare, and sort two- and three-dimensional shapes.
Describe attributes and parts of two- and three-dimensional shapes.
Use visualization, spatial reasoning, and geometric modeling to solve problems.
Recognize geometric shapes and structures in the environment and specify their location.