### Clarifications

*Clarification 1:*Instruction includes mathematical and real-world context for identifying points, lines, line segments, rays, intersecting lines, perpendicular lines and parallel lines.

*Clarification 2: *When working with perpendicular lines, right angles can be called square angles or square corners.

**Subject Area:**Mathematics (B.E.S.T.)

**Grade:**3

**Strand:**Geometric Reasoning

**Date Adopted or Revised:**08/20

**Status:**State Board Approved

## Related Courses

## Related Access Points

## Related Resources

## Formative Assessments

## Lesson Plans

## Original Student Tutorials

## Teaching Idea

## Tutorials

## MFAS Formative Assessments

Students are asked to draw parallel lines, perpendicular lines, a point, and a line segment. Students also explain how a line segment is different from a ray or line.

Students locate points, lines, line segments, and rays in a given diagram.

Students are asked to identify parallel and perpendicular sides and explain how they know.

## Original Student Tutorials Mathematics - Grades K-5

Help a surfing crab learn how to find parallel and perpendicular sides in a variety of polygons as you complete this interactive tutorial!

Identify parallel lines and line segments, as well as perpendicular lines and line segments in two-dimensional figures by joining Parallel Man and Perpendicular Man as they help Mayor Mathematics save Mathopolis in this interactive tutorial.

## Student Resources

## Original Student Tutorials

Help a surfing crab learn how to find parallel and perpendicular sides in a variety of polygons as you complete this interactive tutorial!

Type: Original Student Tutorial

Identify parallel lines and line segments, as well as perpendicular lines and line segments in two-dimensional figures by joining Parallel Man and Perpendicular Man as they help Mayor Mathematics save Mathopolis in this interactive tutorial.

Type: Original Student Tutorial

## Tutorials

This Khan Academy tutorial video defines and illustrates parallel and perpendicular lines.

Type: Tutorial

This video discusses the differences between lines, line segments and rays.

Type: Tutorial