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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.
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Handout
CK-12 Foundation

Ck 12: Geometry: Perimeter and Area Study Guide

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This study guide looks at the definitions and units for perimeter, area, and circumference, and at the perimeter and area of different shapes, including regular...
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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...
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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.
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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.
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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.
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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.
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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...
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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.
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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.
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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...
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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...
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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.
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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...
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Unknown Type
Khan Academy

Khan Academy: Area and Perimeter on the Coordinate Plane

For Students 9th - 10th Standards
Find the area or perimeter of shapes like triangles, rectangles, parallelograms, and hexagons on the coordinate plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gpe Triangle Perimeters

For Teachers 9th - 10th Standards
Students are shown two triangles touching points on a coordinate grid and are asked to answer questions about their perimeters. The purpose of this task is to apply the Pythagorean theorem to calculate distances and areas. Aligns with...
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Activity
CK-12 Foundation

Ck 12: Area and Perimeter of Triangles

For Students 9th - 10th Standards
[Free Registration/Login Required] Students explore the relationship between and area and the base and height of a triangle. Click challenge me to answer practice questions and click learn more to watch a video.
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Activity
CK-12 Foundation

Ck 12: Area and Perimeter of Triangles

For Students 9th - 10th Standards
[Free Registration/Login Required] Students are given the base and height of a triangle and are to determine the area and perimeter. Click challenge me to answer practice questions and click learn more to watch a video.
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Whiteboard
SMART Technologies

Smart: Area of a Triangle

For Teachers 5th - 8th Standards
This SMART whiteboard activity will help students learn the formula for finding the area of a triangle. Students will practice what they have learned by using examples created for visual and kinesthetic learners.
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Unknown Type
Khan Academy

Khan Academy: Areas of Shapes on Grids

For Students 6th - 8th Standards
In this exercise, students practice finding the areas of shapes on grids. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Triangle Area Grade 7

For Students 7th
[Free Registration/Login may be required to access all resource tools.] Find the area of different triangles given the base and the height.
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Unit Plan
Cuemath

Cuemath: Right Angled Triangle

For Students 9th - 10th Standards
Explore and learn about the features and properties of a right triangle in this lesson. Includes examples and practice questions.
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Lesson Plan
Better Lesson

Better Lesson: Finding the Area Review and Assessment

For Teachers 6th Standards
Sixth graders find the area of rectangles, triangles, parallelograms, and trapezoids by using formulas or by composing into rectangles or triangles.
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Unknown Type
Khan Academy

Khan Academy: Use Pythagorean Theorem to Find Area and Perimeter

For Students 7th - 8th
Find the area and perimeter of triangles and quadrilaterals by first using the Pythagorean Theorem to find missing side lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or...

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