Curated OER
Properties of Lines - Parallel and Perpendicular
Sixth graders identify parallel and perpendicular lines in the alphabet. In this line properties lesson, 6th graders use the letters of the alphabet to show parallel and perpendicular lines. Students open a Geogrid Mat on the computer...
Curated OER
Checking County Numbers
Students use their county's information page to gather information about their community. Using the information, they create graphs from the tables provided and interpret the data. They write a paragraph showing their interpretation of...
Curated OER
Polygons
Fourth graders identify and describe lines, shapes, and solids using formal geometric language. They use Inspiration to create a graphic organizer and outline of polygons.
Curated OER
Congruent Triangles - Is This Enough Information?
Seventh graders examine congruence postulates and apply knowledge to triangles in the world around them.
Curated OER
Best Practices in Technology Integration
Students go through various construction techniques needed to bisect angles, lines and arcs, construct a perpendicular from a vertex to a line, construct the center of a circle, transfer an angle, and various other constructions normally...
Curated OER
Poppy Meets Pythagoras
Eighth graders find connections between numbers in a table; use Pythagoras' theorem in a general algebraic form; and measure accurately from a scale drawing to find a method that might enable the helicopter to land inside a rectangular...
Curated OER
Totally Tessellations!
Eighth graders investigate the concept of tessellations and transformations. They create patterns to demonstrate and practice the skill. Students write a description of the pattern for others to interpret. The pattern is assessed...
Curated OER
Shapes are Everywhere
Second graders gain an understanding of geometric shapes and spatial reasoning. They learn the attributes of solid shapes in everyday activities. Students compare geometric shapes to everday objects, finding things that serve a purpose...
Curated OER
Eye From the Sky
Students are introduced to the concept of aerial perspective and scale. Students will use satellite technology to view their neighborhoods and sketch the area surrounding their schools. They will take part in a neighborhood walk to view...
Curated OER
Technology Across the Curriculum
Students take pictures of items they believe have at least one line of symmetry. They print their photos out in class and analyze the items they photographed. They continue by entering the names of their pictures into a spreadsheet. They...
Curated OER
Lab for Truss Design and Testing
Learners design and build their own truss. For this physics lesson, students calculate the forces and maximum load. They complete a full scale diagram of their design.
CK-12 Foundation
Ck 12: Geometry Software for Constructions
[Free Registration/Login Required] Students explore the concept of using geometry software to construct geometric shapes by navigating through the interactive learning module and then answering questions that go along with the module....
CK-12 Foundation
Ck 12: Interactive Geometry: 5.5 Geometry Software for Constructions
Use interactive geometry software to construct an equilateral triangle that maintains its shape even if you move its vertices.
CK-12 Foundation
Ck 12: Interactive Geometry: 2.5 Geometry Software for Reflections
See how geometry software expresses geometric shape reflections.
CK-12 Foundation
Ck 12: Interactive Geometry: 2.3 Geometry Software for Translations
See how geometry software performs geometric translations.
CK-12 Foundation
Ck 12: Interactive Geometry: 2.8 Geometry Software for Rotations
See how geometry software performs rotations.
Texas Instruments
Texas Instruments: Cabri Geometry Tour
In this activity, students will practice some of the basic functions of the Cabri Geometry software, including use of the Pointer, Point, Line, Measure, and Construct toolbars.
National Council of Teachers of Mathematics
The Math Forum: Geometry Turned On
This Math Forum site contains many mathematical and geometric explanations and proofs of many different topics that have been done using a geometry software called Geometer's Sketchpad. The explanations are very detailed and clear;...
Other
Transformational Geometry & Iteration in Mangbetu Art
Mangbetu art shows the use of all four geometric transforms: Reflection, Translation, Rotation, and Scaling. This website will provide you with some cultural background on the Mangbetu and their art. The software will allow you to...
Smithsonian Institution
National Museum of American History: Slates, Slide Rules and Software
Did you learn to calculate using a 7-foot-long slide rule? Did you learn about the properties of numbers using brightly colored Cuisenaire rods? Ever wonder who invented the graph paper you used in geometry class? Go back to the...
Science U
Science U: Welcome to the Geometry Center!
Site provides information and activities on various aspects of geometry, from shapes to patters and symmetry. Make your own tetra puzzle or build an icosahedron in the classroom. Interactive and fun.
Texas Instruments
Texas Instruments: Cabri Geometry Tour
In this activity, students use the Cabri software to mark points, draw lines, construct parallel and perpendicular lines, angles, bisectors, and triangles. They learn how to use the tool to measure angles.
GeoGebra
International Geo Gebra Institute: Geo Gebra
The free mathematics software creates interactive learning material that combines geometry, graphing, tables, algebra, statistics, and calculus. Teachers can download the free open source software to enhance their mathematics lessons. A...
CPALMS
Cpalms: Exploring Cavalieri's Principle
[Free Registration/Login Required] In this lesson, students use the geometry program GeoGebra to explore Cavalieri's Principle, specifically to investigate whether it applies when calculating the volume of oblique solids. Lesson includes...