Wolfram Research
Wolfram Math World: Slope
This site from MathWorld.com provides charts, links, and definitions pertaining to slope.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Line Problems
This site answers many general questions about linear equations and their graphs. A student posed several questions to Dr. Math regarding lines and their equations. Question number 4 is about the equation of a horizontal line and Dr....
Math Is Fun
Math Is Fun: Definition of Circumference
Definition of circumference. Click the "here's more" link to learn more about a circle; its radius and diameter, area, lines, slices and common sectors.
Mr. Martini's Classroom
Mr. Martini's Classroom: Teacher's Figure Library: Geometric Figures
This interactive resource provides an example picture of the geometric figure chosen by students to review.
Other
Relationships: Dynamics
The dynamics of shape in art and the relationship of shape with the other elements of art. The effects of angles and lines on perception.
Quia
Quia: Geometric Terms Flash Cards
Do you need practice remembering or learning different geometry vocabulary words and definitions? The flash cards at this web site are for you! There is a link to a list of terms with definitions you can click if you want to see if you...
Quia
Quia: Geometric Terms Concentration
Do you need practice remembering or learning different geometry vocabulary words and definitions? This concentration game is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if...
ClassFlow
Class Flow: Plane Geometry
[Free Registration/Login Required] This is an introduction or review lesson on points, lines, planes and angles using some of the tools for Activstudio 2.
ClassFlow
Class Flow: Segments and Polygons
[Free Registration/Login Required] This flipchart reviews segments, parallel and perpendicular lines and then introduces polygons including quadrilaterals. It has many real world examples of shapes and includes Activote assessment.
ClassFlow
Class Flow: Straight Lines
[Free Registration/Login Required] Students explore straight lines, graphing lines and applying the formula for graphing linear equations.
ClassFlow
Class Flow: Vectors Algebra
[Free Registration/Login Required] Students use the interactive features of Activstudio to identify and label one and two dimensional characteristics. Students explore rays, lines, end points, line segments, vertices, and angles.
ClassFlow
Class Flow: Exploring Relationships With Lines
[Free Registration/Login Required] This flipchart explores the mathematical relationships between lines using algebra.
ClassFlow
Class Flow: Parallel Lines and Planes
[Free Registration/Login Required] This flipchart defines parallel lines and planes. It defines a transversal, the concept of alternate angles, and vertical angles.
ClassFlow
Class Flow: Build 3 D Shapes
[Free Registration/Login Required] In this interactive flipchart students use colored lines and circles to build 3D shapes to learn and review.
ClassFlow
Class Flow: Classifying Lines
[Free Registration/Login Required] This flipchart introduces students to the different types of lines and how to classify them.
ClassFlow
Class Flow: Curve Sketching
[Free Registration/Login Required] Linear, sine, and quadratic equations are displaying a number of graphs and tables. Challenging and might even challenge the teacher. Go for it.
ClassFlow
Class Flow: Discovering Lines
[Free Registration/Login Required] This flipchart defines Parallel, Intersecting, and Perpendicular lines. It also provides opportunities to practice working with Parallel, Intersecting and Perpendicular Lines!
ClassFlow
Class Flow: Geometry Basics
[Free Registration/Login Required] This Flipchart lesson introduces students to basic terms and figures in geometry. Good for introductory lesson.
ClassFlow
Class Flow: Introduction to Geometry
[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.
ClassFlow
Class Flow: Lines Parallel
[Free Registration/Login Required] The teacher will use this lesson plan flipchart to review parallel lines.
ClassFlow
Class Flow: Lines, Rays, Line Segments
[Free Registration/Login Required] This lesson is an introduction to the basic geometric figures: lines, rays, and line segments. The definition and naming conventions for each figure are explained. An assessment section follows.
ClassFlow
Class Flow: Measure and Draw Angles
[Free Registration/Login Required] This lesson has many student interactive tricks. It is very exciting and gets the students actively engaged as they solve problems on the board. The lesson is an introduction to angles. It also reviews...
Shmoop University
Shmoop: Basic Geometry: Basic Shapes & Angles
The geometry resource explores basic shapes, lines, and angles. Descriptions, examples, and practice problems are included.
ClassFlow
Class Flow: Loci
[Free Registration/Login Required] Students learn how to apply geometric properties and relationships to describe, compare, and draw two dimensional shapes.