Activity
Maths Challenge

Maths challenge.net: Perpendicular Construction

For Students 9th - 10th Standards
This is a "three star" geometry problem where prior math problem skills and proof experience is recommended to solve this "Perpendicular Construction" problem.
Website
Other

Antonio Gutierrez: Geometry From the Land of the Incas

For Students 9th - 10th
Discovering the properties of constructions, seeing proofs in action, and viewing problems come to life here with this wonderful use of technology in the classroom. Single steps are explained and illustrated one at a time so that the...
Unit Plan
Khan Academy

Khan Academy: Constructing Scale Drawings

For Students 6th - 8th Standards
An urban planner needs your help in creating a scale drawing. Let's use our knowledge about scale factor, length, and area to assist. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Perpendicular Bisectors

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to construct perpendicular bisectors and use the Perpendicular Bisector Theorem.
Activity
Texas Instruments

Texas Instruments: Cabri Geometry Tour

For Teachers 9th - 10th Standards
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.
Lesson Plan
Texas Instruments

Texas Instruments: Bring Geometry to Life

For Teachers 9th - 10th Standards
In this activity, young scholars use the Geometer's Sketchpad application to construct Euler's Line, Pythagorean Proof, and Fermat's point. They also investigate the concept of perimeter.
Activity
Texas Instruments

Texas Instruments: Cabri Geometry Tour

For Teachers 9th - 10th Standards
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.
Interactive
ABCya

Ab Cya: Shape Construction

For Students Pre-K - 1st Standards
Drag shapes in this geometry and symmetry practice activity.
Activity
Maths Challenge

Maths challenge.net: Peculiar Perimeter

For Students 9th - 10th Standards
This is a "three star" geometry problem where prior math problem skills and proof experience is recommended. Tile constructions may be used to solve this perimeter and area problem.
Website
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Building Two Column Proofs

For Students 9th - 10th Standards
Use this site to find details of how to construct a two column proof. Dr. Math responds to a question posed by a student and details the reasons for the order of steps and shows two different ways to do the same proof.
Lesson Plan
NASA

Nasa: Earth, Moon and Mars Balloons

For Teachers 3rd - 8th Standards
In this lesson, students will construct a scale model of the Earth-Moon-Mars system.
Activity
Ministry of Education and Employment of Spain

Red Escolar: Un Triangulo Sorprendente

For Students 9th - 10th Standards
In Spanish. Different activities which involve the following concepts: right triangles, perpendicular lines, classification of triangles, area of a square and Pythagorean theorem.
Activity
Texas Instruments

Texas Instruments: Centers of a Triangle

For Teachers 9th - 10th
The centroid, circumcenter, orthocenter, and incenter are the four classic centers of a triangle that are studied in geometry. In this activity, you will construct these center points and discover their properties. [Requires Adobe Reader.]
Activity
Texas Instruments

Texas Instruments: The Tangent Ratio

For Teachers 9th - 10th Standards
In this activity students explore the tangent ratio. Students construct a right triangle using perpendicular lines, and a line that forms the hypotenuse of the triangle. When students construct the hypotenuse line it is very important...
Interactive
Physics Classroom

The Physics Classroom: Kinematics: Graphs and Ramps Interactive

For Students 9th - 10th
Students construct a ramp along which a ball rolls in order to match the given graph. As the ball rolls along the ramp, the motion is plotted in real time, allowing the learner to make adjustments to the ramp in order to successfully...
Website
PBS

Pbs Learning Media: Using a Coordinate Grid

For Students 5th - 7th Standards
In this Cyberchase video segment, the CyberSquad must locate each other using a map's grid to construct a coordinate system using letters and numbers.
Unknown Type
Khan Academy

Khan Academy: Drawing Angles

For Students 3rd - 5th Standards
In this exercise, students practice drawing angles. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Interactive
CK-12 Foundation

Ck 12: Plix: Boyle's Law: Lever

For Students 9th - 10th
[Free Registration/Login Required] With the given shapes and labels, construct a second-class lever that would help in lifting very heavy items.
Interactive
CK-12 Foundation

Ck 12: Plix Series: Limiting Reactant

For Students 9th - 10th
[Free Registration/Login Required] Using atoms from a reactants pool, construct products of an equation shown and place them in the product pool. Then answer a challenge question about the topic.
Activity
Texas Instruments

Texas Instruments: Real Life Real World Activity: Air Traffic Control

For Teachers 9th - 10th
In this lesson, students will model and solve air traffic control problems with geometry software. The Cabri Jr. application will be used to construct a model of the problem situation and concepts from trigonometry and proportions are...
Activity
Texas Instruments

Texas Instruments: The Area of the Trapeziod

For Teachers 9th - 10th
This activity is a based on an activity I saw in Exploring Geometry with the Geometer's Sketchpad. Student will construct a trapeziod and then use rotation to create a parallelogram from the trapeziod. The follow up questions lead the...