Line Teacher Resources
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Parallel Lines and Transversals: Lesson
3 mins 7th - 11th CCSS: Adaptable
Segment transversals proportionally. Given a diagram with three parallel lines and two transversals, the narrator of a short video points out the parallel lines cut the transversals proportionally. The portion of a long playlist on...
Perpendicular Lines: Lesson
2 mins 9th - 11th CCSS: Adaptable
Perpendicular lines are all right. Using the definition of perpendicular, the video lesson introduces perpendicular lines.The portion a basic geometry playlist makes connections between the rules of parallel lines and perpendicular lines.
Perpendicular Lines in the Coordinate Planes: Lesson
2 mins 7th - 10th CCSS: Adaptable
Get the slope right with two easy steps. By placing two perpendicular lines on the coordinate plane, the video determines the relationship of the slopes of the two line lines. The resource is a part of an informative and extensive...
Parallel Lines in the Coordinate Plane: Lesson
4 mins 8th - 10th CCSS: Adaptable
Discover the parallel structure of parallel lines. Provided with two parallel lines on a coordinate plane, the presenter shows that the rise and run, or slope, of the two lines are the same. The resource, which is a portion of a larger...
Module 7: Connecting Algebra and Geometry
8th - 10th CCSS: Designed
The coordinate plane links key geometry and algebra concepts in this approachable but rigorous unit. The class starts by developing the distance formula from the Pythagorean Theorem, then moves to applications of slope. Activities...
Tangent Lines and the Tangent Function
11th - 12th CCSS: Designed
Construct tangent lines and make the connection to tangent functions. An informative lesson reviews the geometry origins of the tangent function. Pupils use that information to determine how to construct a tangent to a circle from a...
Connecting Algebra and Geometry Through Coordinates
9th - 10th CCSS: Designed
This unit on connecting algebra and geometry covers a number of topics including worksheets on the distance formula, finding the perimeter and area of polynomials, the slope formula, parallel and perpendicular lines, parallelograms,...
Lines of Symmetry, Shapes and Symbols
3rd - 5th CCSS: Designed
Which shapes are symmetrical? Third graders decide which shapes have lines of symmetry, and which shapes are not symmetrical. They work on 13 shapes and symbols, four of which have lines already drawn through them. Use this resource to...
Dilation of a Line: Center on the Line
9th - 12th CCSS: Designed
Assessing progress is easy using a quick quiz focused on dilations with the center on the line! Geometry geniuses graph the images of points resulting from a dilation with a center point. Then, they must describe the relationship between...
How Do You Find the Slope of a Line If You Have a Perpendicular Line?
4 mins 8th - 11th
What kind of lines have slopes that are the opposite reciprocal of each other? Parallel lines? No. Parabolas? No. Perpendicular lines? Yes! Watch and listen as the instructor demonstrates how to make these determinations about...
Identify Functions and the Vertical Line Test: The Vertical Line Test
9th - 12th
There's no easier test than the vertical line test. Learners drag a vertical line across the graphs of several relations in an interactive. They answer a set of challenge questions that focus on whether the graphs represent functions.