Curated OER
Geometric Proofs
In this geometric proof learning exercise, learners use geometric theorems and rules to prove given statements. They prove that given lines and angles are similar. This five-page learning exercise contains ten problems.
Curated OER
Angle Measurement
In this angle measurement instructional activity, 10th graders solve 24 different problems related to determining the measurement of various angles. First, they define the various ways to measure an angle and define the type of angle...
Curated OER
Angle Measurement 2
For this angle measurement worksheet, 10th graders solve 24 problems that include determining the measurement of various angles. First, they define each angle and the specific type that is shown in each. Then, students determine the...
Curated OER
Parallel Lines and Proportional Parts
In this parallel lines and proportional parts learning exercise, 10th graders solve 5 different problems related to determining whether lines are parallel and proportional in each figure. First, they refer to the figure shown at the top...
Curated OER
Segmenting and Blending Words
Students are introduced to the concept of segmentation and blending of words. As a class, they are shown various words and are asked to determine the amount of letters and sounds in each. To end the lesson, they participate in a...
Curated OER
Basic Geometry Ideas and Angle Measurement
Seventh graders explore the concept of basic geometry. In this basic geometry lesson, 7th graders identify the correct picture for a given vocabulary word such as midpoint, line, ray, or parallel lines. Students discuss examples of...
Curated OER
Measurement
In this measurement worksheet, students measure distance with a provided ruler. Using the provided map scale, students determine the actual distance between objects. They may set up proportions to evaluate each situation.
Curated OER
Bisecting Angles and Segments
Students bisect angles and segments using a mira. They measure the original angles and segments and the angles and segments formed by bisecting to better see the relationship between them.
Curated OER
Lines, Rays, Line Segments, and Planes
Students are introduced to lines, rays, line segments and planes and study the differences between them. They also practice graphing lines, rays, line segments and planes
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.
National Council of Teachers of Mathematics
Nctm: Illuminations: Triangle Inequality
This activity illustrates the Triangle Inequality and the conditions necessary for a triangle to be formed from three straight lines.
Math Open Reference
Math Open Reference: Congruent
Learn about congruent with this handy reference guide. Provides a detailed definition and examples that enhance 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.
Other
Nearpod: Rotations Using Coordinates
In this lesson on rotations using coordinates, 8th graders explore rotations of line segments using the coordinate plane.