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Unit Plan
Khan Academy

Khan Academy: Quadrants on the Coordinate Plane

For Students 5th - 7th Standards
Practice graphing points on a coordinate plane and identifying the quadrant or axis where they are located. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Activity
Cool Math

Coolmath: Intro to Graphing Plotting Points

For Students 6th - 8th Standards
Learn how to plot points on a coordinate graph.
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Whiteboard
ClassFlow

Class Flow: Introduction to Geometry

For Teachers 9th - 10th
[Free Registration/Login Required] This flipchart is a basic introduction to Geometry: points, lines and planes. The flipchart contains movable objects (with an emphasis on student participation) and Activotes.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Co Points Equidistant From Two Points in the Plane

For Teachers 9th - 10th Standards
In this task, students are shown a line segment that is bisected at a right angle by a second line. They are asked to prove statements about this geometric construction. Includes a GeoGebra worksheet that can be used by the instructor to...
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Activity
Texas Instruments

Texas Instruments: Intersecting Lines and Planes

For Teachers 9th - 10th
In these problems, students are asked to find: point of intersection of two lines; coefficients that make two lines parallel; intersection of diagonals of a quadrilateral; and the point of intersection of three planes.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gpe Scaling a Triangle in the Coordinate Plane

For Teachers 9th - 10th Standards
The goal of this task is to apply dilations to a triangle in the coordinate plane. Students will need to find the coordinates of a point which cuts a given segment into one third and into two thirds. The two dilated triangles share a...
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: F Le Do Two Points Always Determine a Linear Function?

For Teachers 9th - 10th
For this task, students explore linear functions and whether they can always be determined by two points on the coordinate grid. It focuses on producing an explicit function f(x) in the case where the line is not vertical. Aligns with...
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gpe, F Tf Coordinates of Points on a Circle

For Teachers 9th - 10th Standards
For this task, students are shown a unit circle in a plane and an angle measured from the x-axis. They must determine the coordinates of the line segment for the angle and answer a question about the sum of the coordinates. The purpose...
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Interactive
Fun Brain

Fun Brain: What's the Point? (Graphing Skills Game)

For Students 3rd - 7th Standards
This graphing game challenges players to supply the coordinates for points shown on a series of graphs and also to plot pairs of coordinates on simple Cartesian planes.
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Graphic
University of Cambridge

University of Cambridge: Nrich: A Cartesian Puzzle

For Students 3rd - 8th Standards
This one page website lets you practice plotting points on the coordinate grid. See if you can find the missing coordinates to complete the shapes. When you are finished the solutions are only a click away.
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Lesson Plan
University of Regina (Canada)

University of Regina: Math Central: Introduction to Slope for Middle Years Mathematics

For Teachers 6th - 8th
This collection of five middle school math lessons covers the topic of plane geometry, specifically the concept of slope. The first lesson introduces students to plotting points on a Cartesian grid using a Geoboard. Lesson two moves them...
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Unit Plan
Cuemath

Cuemath: Coordinate Geometry

For Students 9th - 10th Standards
A comprehensive guide for learning all about Coordinate geometry with definitions, the coordinate plane, formulas, equation of a line, related topics, solved examples, and practice questions.
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Website
PBS

Pbs Learning Media: Finding the Intersection

For Students 6th - 8th Standards
In this Cyberchase video, Inez and Digit identify the location of the transformatron using their knowledge of parallel and intersecting lines.
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Unit Plan
Khan Academy

Khan: Lesson 5: Relationships Among Linear Equations, Lines in Coordinate Plane

For Students 9th - 10th Standards
This lesson focuses on the relationship between algebraic, graphical, and contextual expressions of linear equations.
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Handout
CK-12 Foundation

Ck 12: Geometry: Basics of Geometry Study Guide

For Students 9th - 10th Standards
This study guide on Geometry covers some key vocabulary, drawing and labeling diagrams, describing geometric figures, and basic postulates for points, lines, planes, and intersections. It is available for download with free registration.
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Unit Plan
Free Math Help

Free Math Help: How to Find the Limit

For Students 9th - 10th Standards
The resource explores basic terms used in geometry. The tutorial defines a point, line, and plane. Examples are included.
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PPT
Sophia Learning

Sophia: Two Lines Tangent to a Circle: Lesson 3

For Students 9th - 10th
This lesson will present how if two segments from the same point outside a circle are tangent to a circle, then they are congruent. It is 3 of 5 in the series titled "Two Lines Tangent to a Circle."
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Activity
Texas Instruments

Texas Instruments: Handy Reflections

For Teachers 9th - 10th
The purpose of this investigation is to: Revise plotting points on the Cartesian plane; Use and understand aspect ratios; Improve estimation skills; Use a spreadsheet or a graphing calculator to draw a graph; Learn how to reflect lines...
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Website
PBS

Pbs Learning Media: Two Sightings, Different Information

For Students 5th - 7th
Jackie and Matt are looking at the same object along two different lines, in this video segment from Cyberchase.
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Lesson Plan
University of Regina (Canada)

University of Regina: Math Central: Basics of Graphing

For Teachers 9th - 10th
Students learn the basics of graphing including terminology, plotting, and reading points. The lesson has an overview, materials, procedures, and evaluation techniques.
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Lesson Plan
University of Regina (Canada)

University of Regina: Math Central: Basics of Graphing

For Teachers 9th - 10th Standards
Students learn the basics of graphing including terminology, plotting, and reading points. The lesson has an overview, materials, procedures, and evaluation techniques.
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Activity
Texas Instruments

Texas Instruments: Linear Regression: Wing Span/height

For Teachers 6th - 8th
Students take measurements of individual's wing span and height and create a coordinate graph. The activity should include at least three different grade levels. Students submit an equation through "Activity Center" and the class...
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Lesson Plan
Alabama Learning Exchange

Alex: Midpoint of a Line Segment.

For Teachers 6th - 8th Standards
Investigate finding the midpoint of a line segment and derive the formula for the midpoint of two points on a coordinate plane. This lesson plan was created by exemplary Alabama Math Teachers through the AMSTI project.
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Handout
Free Math Help

Free Math Help: Geometry Vocabulary

For Students 9th - 10th Standards
The tutorial examines basic geometry vocabulary. Definitions and examples of a point, line, line segment, ray, and plane are included.

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