Line Teacher Resources
Find Line educational ideas and activities
Showing 81 - 100 of 3,314 resources
Exploring the Slopes of Parallel and Perpendicular Lines.
Students find the slopes for perpendicular and parallel lines. In this geometry lesson, students differentiate between parallel and perpendicular lines. They use Cabri software to create lines to compare.
Dynamic Geometry: Bssic constructions
Tenth graders explore Cabri Jr. In this geometry instructional activity, 10th graders investigate the menus, tools, and capabilities of Cabri Jr. as a tool to enhance student understanding. The instructional activity includes the construction of a triangle and the perpendicular bisectors of a triangle and an investigation into the sum of the measures of the angles of a triangle.
Logic and Geometry
For this geometry worksheet, 10th graders from the inverse, converse, and contrapositive of a given statement and tell whether a given statement is true or false. The one page worksheet contains eighteen questions. Answers are not included.
Geometry and Islam
Students examine Islamic art. In this geometry and Islam lesson, students read "Islamic Belief Made Visual" and create geometric designs that feature Islamic patterns found in architecture, texts, and textiles.
Exploring the Slopes of Parallel and Perpendicular Lines
Young scholars calculate the slope of parallel and perpendicular lines.In this algebra lesson plan, students differentiate between parallel and perpendicular lines. They graph their lines using the slope of the equation.
Tenth graders explore parallel lines cut by a transversal. In this geometry lesson, 10th graders determine if two lines are parallel, based on the measure of the interior angle pair on the same side of the transversal.
Secant Line Approximation of the Tangent Line
Students perform operation with secant and tangent lines. For this calculus lesson, students find the derivative and relate it to the slope of a line. They differentiate between secant and tangent as they intersect a circle, using Cabri.
The Euler Line
Tenth graders explore the Euler Line. In this geometry lesson, 10th graders use Cabri Jr. to construct the circumcenter, incenter, orthocenter, and centroid of a triangle. Students examine the four points and construct a line, the Euler line, that passes through three of the four points. Students determine which point should be excluded and examine the conditions under which all four points would lie on the line.
Concurrent Lines in Triangles
Learners explore the concept of concurrent lines in triangles. In this concurrent lines in triangles instructional activity, students work in groups to investigate properties of concurrent lines in acute, right, and obtuse triangles. Learners use a worksheet to guide them through their investigation.
Parallel Lines and Transversals
Tenth graders explore parallel lines cut by a transversal. In this geometry lesson, 10th graders explore the relationships that exist among the eight angles formed when parallel lines are cut by a transversal. The dynamic nature of Cabri Jr. allows for conjecture and verification regarding the angle relationships.
Tenth graders investigate parallel lines. For this geometry lesson, 10th graders explore the measures of the angle formed when parallel lines are cut by a transversal. This lesson focuses on the sum of the measures of the two interior angles on the same side of the transversal. The dynamic nature of Cabri Jr. allows students to form and verify conjectures.
Concurrent Lines, Medians and Altitudes
In this geometry worksheet, students construct angles and identify medians and altitudes. They use a compass and protractor to perform heir construction. There are 28 questions.
Lines in the Plane : Cabri Jr. Activity
Tenth graders explore lines, circles and planes using CabriJr. For this technology lesson, 10th graders further their knowledge of geometric terms using CabriJr. This assignment requires the software CabriJr loaded onto the TI.
Practice 3-3: Parallel and Perpendicular Lines
In this parallel and perpendicular lines worksheet, students identify true statements about perpendicular and parallel lines. They explain the relationship between a combination of lines. This one-page worksheet contains 14 problems.
Lines of Symmetry, Shapes and Symbols
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 reinforce your elementary geometry lesson.
Is This a Rectangle?
How do you show that something is a rectangle? This activity starts with four coordinate points and asks young geometers to explain whether they create a rectangle. Knowledge from both geometry and algebra come into play here, as well as, exploring many different approaches to solve this problem; making this a good small group activity. See how many solutions your class can find!
Unit Squares and Triangles
This is an interesting geometry problem. Given the figure, find the area of a triangle that is created by the intersecting lines. The solution requires one to use what he/she knows about coordinate geometry, as well as triangle and angle congruence, rigid motion, rotation, translation, and the distance formula. Challenge your learners to find the solution two different ways.
Sailing with Congruency
Young geometers will have fun with this real-world application of a geometry theorem. Working in groups, they explore the design of sailboats and must come up with a convincing argument about how the manufacturer can save time and money. The argument requires proving that each point on the perpendicular bisector of a segment is equidistant from the endpoints of the segment. This activity is an excellent example of how geometry is useful in solving everyday problems.
Constructing a square inscribed in a circle
Here is an activity that focuses on the actual construction of the square inscribed in a circle. The lesson allows for the use of dot paper or graph paper with straight edges and protractors, or dynamic geometry software programs. After construction, learners verify that the figure is a square. An additional small group activity has them approximate the percentage area of the square within the circle.
How on Earth?
The equator and longitudinal lines make interesting circles to study in terms of arc length. Using Google Earth or a globe, pupils research specific questions about size and distance. This a great activity to bring some real-world application into your classroom.