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McGraw Hill

Glencoe: Self Check Quizzes 1 Area of Triangles

For Students 9th - 10th
Use Glencoe's randomly generated self-checking quiz to test your knowledge of finding the area of a triangle. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check...
Activity
Analyze Math

Analyze Math: Area of Triangles

For Students 9th - 10th Standards
The geometry resource explores the different formulas used to calculate the area of triangles. The applet investigates the angles and sides of a triangle.
Unit Plan
Texas Education Agency

Texas Gateway: Area of Triangles, Parallelograms, and Trapezoids

For Students 5th - 7th
These activities provide an opportunity for students to explore the area formulas for triangles, trapezoids, and parallelograms.
Lesson Plan
Better Lesson

Better Lesson: Area of Triangles

For Teachers 6th Standards
Sixth graders apply what they know about area of other polygons to develop a formula for finding the area of a triangle.
Unknown Type
Houghton Mifflin Harcourt

Holt, Rinehart and Winston: Homework Help: Perimeter and Area of Triangles and Trapezoids

For Students 9th - 10th Standards
Get independent practice working with finding the perimeter and area of triangles and trapezoids. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
Handout
Quia

Ixl Learning: Area of Triangles

For Students 6th - 7th Standards
Brush up on your math skills relating to the area of triangles then try some practice problems to test your understanding.
Unit Plan
E-learning for Kids

E Learning for Kids: Math: Food Market: Area and Time Zones

For Students 5th - 6th Standards
Join Maya in the food market and make patties with her while she learns about the area of triangles and about time zones.
Handout
Math Is Fun

Math Is Fun: Area of Triangles Without Right Angles

For Students 9th - 10th Standards
Learn how to find the area of triangles without right angles. Find the formula to use depending on the information you know about the triangle: base and height, three sides, or two sides and an angle.
Unknown Type
Khan Academy

Khan Academy: Area of Triangles

For Students 6th - 8th Standards
In this exercise, students practice finding the area of triangles. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Activity
Shodor Education Foundation

Shodor Interactivate: Triangle Explorer

For Students 9th - 10th Standards
This applet allows users to study the nature of triangles and their area. It draws random triangles on a Cartesian coordinate system. The user can determine the area of the triangle using his or her preferred method. After the calculated...
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Areas of Triangles

For Students 9th - 10th
Thirteen problems offer practice finding the areas of triangles. 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 Solution" button to check each...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Triangle Area Grades 6 7

For Students 6th - 7th
[Free Registration/Login may be required to access all resource tools.] Find the areas of triangles given their base and height dimensions.
Activity
Texas Instruments

Texas Instruments: Area of Triangle

For Teachers 9th - 10th Standards
This Cabri Geometry activity enables students to review the relationship between the height of a triangle and its perimeter and area.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Area and Perimeter of Triangles

For Students 6th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students use formulas and given information to figure out the dimensions and the area of different triangles. Students examine guided notes, review...
Interactive
Khan Academy

Khan Academy: Area of Triangles

For Students 6th Standards
Demonstrates the logic behind the formula for the area of a triangle. Includes several practice problems and their explanations.
Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Area of Triangles

For Students 3rd - 8th Standards
To find the area of a triangle, try to make a parallelogram using a copy of the triangle.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Area and Perimeter of Triangles

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students calculate the area and perimeter of a triangle. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Area and Perimeter of Triangles

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to find the area and perimeter of triangles. Students examine guided notes, review guided practice, watch instructional videos and...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gpe Equal Area Triangles on the Same Base Ii

For Teachers 9th - 10th Standards
This task has learners apply their knowledge of parallel lines to solve a geometric problem on areas of triangles. The task is open-ended in that students can choose their method of completing the task. Aligns with G-GPE.B.5.
Unit Plan
Khan Academy

Khan Academy: Area of Triangles

For Students 5th - 7th Standards
Practice finding the area of right, acute, and obtuse triangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Activity
Texas Instruments

Texas Instruments: Investigating Area Relationships

For Teachers 9th - 10th
The interactive Cabri Jr. geometry application makes it easy to measure the area of triangles and quadrilaterals. In this activity, students will explore some interesting area relationships in quadrilaterals.
Activity
National Council of Teachers of Mathematics

The Math Forum: Find the Area of the Shape!

For Students 3rd - 8th Standards
Try to figure out the area of this challenging shape. In order to view the images, you will need to use JavaSketchpad.
Lesson Plan
Homeschool Math

Homeschool Math: Area of Triangles

For Students 4th - 6th Standards
This lesson presents the idea that the area of any triangle is exactly half of a certain parallelogram -- thus we get the familiar formula of multiplying the base and the altitude and taking half of that. The lesson contains varied...
Unit Plan
Mr. Martini's Classroom

Mr. Martini's Classroom: Area of Triangles, Trapezoids & Parallelograms

For Students 3rd - 8th Standards
Students solve for the area of rectangles, squares, triangles, trapezoids, and parallelograms.

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