Math Open Reference
Math Open Reference: Introduction to Coordinate Geometry
A complete reference guide to coordinate geometry. It provides definitions and examples that enhance further explanation. Includes links to related topics.
Khan Academy
Khan Academy: Coordinate Plane Word Problems: Polygons
Solve all sorts of word problems with crazy contexts that use polygons on the coordinate plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Shodor Education Foundation
Shodor Interactivate: Lesson: Lines, Rays, Line Segments, & Planes
This robust lesson plan for upper elementary and middle school grades introduces the concepts for lines, rays, line segments, and planes. Resources are linked to it and ready for your use.
Other
Central Michigan University: Point Slope Form
This resource features information on the point-slope form in geometry. It provides a good definition, several examples, and information on various forms.
Khan Academy
Khan Academy: Divide Line Segments
Figure out the coordinates of a point between two other points that give a certain ratio. For example, find a point C so that it is two thirds of the way between point A and B.
Math Open Reference
Math Open Reference: Area of a Square
A complete reference guide to finding the area of a square. It provides definitions, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Line
Learn about lines with this useful reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Vertical Line
Learn about vertical lines with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Ray
Learn about rays with this handy reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Line Segment
Learn about line segments with this useful reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Intercept of a Line
A complete reference guide to finding the intercept of a line. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Point
A complete reference guide to points. It provides definitions and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Diagonals of a Square
A complete reference guide to diagonals of a square. It provides definitions, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Math Slice
Math Slice: Graph Slice Special Test
A ten question test for assessing measurement concepts of area and perimeter. Assessment is scored online and student scores are compared with other students who have taken the assessment. Great assessment tool.
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