CK-12 Foundation
Ck 12: Elem Math: Identifying Straight Lines in Various Shapes
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on determining if there are straight lines in various two dimensional shapes.
Kinder Art
Kinder Art: Norval Morrisseau (Lesson Plan)
A wonderful educational art site from KinderArt that includes creating a work of art in a style similar to that of Morrisseau. Includes a short biography, art vocabulary, and information on Ojibwa culture.
CK-12 Foundation
Ck 12: Algebra: Comparing Equations of Parallel and Perpendicular Lines
Use their slopes to determine if two lines are parallel or perpendicular.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Points, Lines, Planes, Angles
Twenty-five problems cover the topics of points, lines, planes and angles in various settings. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
Analyze Math
Analyze Math: Perpendicular Bisector
Learners explore the definitions and properties of the perpendicular bisector. The interactive activity includes an applet to explore the properties of the perpendicular bisector.
Paul Dawkins
Paul's Online Notes: Algebra: Graphing and Functions
Students investigate functions and graphing. Topics examined are lines, circles, graphing functions, inverse functions, and combining functions. Class notes, definitions, and examples with detailed solutions are included. The class notes...
National Council of Teachers of Mathematics
The Math Forum: Analytic Geometry: Polar Coordinates
This site from The Math Forum provides great information on polar coordinates. You can access this information either by clicking on the coordinates link or just scrolling down, it is the first one listed on the page. Includes several...
National Council of Teachers of Mathematics
The Math Forum: Using Geoboards in the Classroom
A thorough look at the extensive uses of geoboards in the classroom. Links are listed which give introductory information on geoboards - for teachers new to using them. Then, lesson plans are provided for using geoboards in teaching...
University of North Carolina
University of North Carolina Wilmington: Lines in a Plane
This site from the University of North Caroline at Wilmington provides great information on the lines in a plane. The information that is given is in-depth and complete, touching on the slope of a line, equations of lines, and linear...
Math Planet
Math Planet: An Introduction to Geometry
Provides an introduction to geometry with definitions of points, lines, planes and angles through the use of examples and a brief video lesson. [1:28]
CK-12 Foundation
Ck 12: Elem Math: Overview of Parallel Lines
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on the properties of parallel lines.
CK-12 Foundation
Ck 12: Elem Math: Determining Whether Lines Are Parallel
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems to determine if lines are parallel.
Khan Academy
Khan Academy: Line and Angle Proofs
Explore different ways of proving some theorems about lines and angles. Some transformations are used. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
BBC
Bbc: Angles
You can pick up some valuable pointers on angles and lines here. When you finish working your way through the pages you can take an on-line "Test Bite," and check your understanding.
BBC
Bbc: Bitesize: Rectilinear Shapes
Find the gradient, equations and intersections of medians, altitudes and perpendicular bisectors using our knowledge of the mid-point as well as parallel and perpendicular lines.
Math Open Reference
Math Open Reference: Points and Lines
A complete reference guide to points, lines, and planes. It provides definitions and interactive activities that enhance further explanation.
CK-12 Foundation
Ck 12: Elem Math: Determining Whether Lines Are Perpendicular
[Free Registration/Login may be required to access all resource tools.] Students watch two videos and attempt practice problems on how to determine if two lines are perpendicular.
Common Core Sheets
Common Core Sheets: Expressions & Equations 8.ee.6 Worksheets
Print or create worksheets to assess students' understanding of the connections between proportional relationships, lines, and linear equations.
Alabama Learning Exchange
Alex: Geometric Man
The students will explore angles, rays, line segments, perpendicular lines, parallel lines, and two-dimensional figures through the use of the book Shape Up! Fun With Triangles and Other Polygons by David A. Adler. They will also...
Math Open Reference
Math Open Reference: Perpendicular
Learn about perpendicular 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: Improper Integrals
Learn about improper integrals with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
Houghton Mifflin Harcourt
Harcourt: School Publishers: Negative Slope
This site provides an example of a negative slope, including the equation of the line shown. Also given is a definition of a negative slope.
English Verse
English Verse: Percy Bysshe Shelley (1792 1822)
Shelley's controversial life is briefly sketched here, and the full text of a number of his poems is included.
University of South Florida
Fcat: Exploring Linear Equations: Teacher Notes
This lesson plan guides students through the use of a graphing calculator to explore the slope and y-intercept of a line.