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Worksheet
Curated OER

Area of Triangles

For Students 6th - 8th
In this math learning exercise, students draw two triangles and one pentagon. Then they use the correct formula to calculate the area for each.
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Interactive
Curated OER

Area of Shapes

For Students 7th - 9th
In this area of shapes worksheet, students determine the area of equilateral triangles, acute triangles, and compound figures. This one-page worksheet contains 3 multi-step problems.  Answers are provided with this interactive worksheet.
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Interactive
Curated OER

Area of Figures That Include Circles

For Students 10th - 12th
In this area worksheet, students calculate the perimeter and area of given complex figures.  They determine the area of shaded regions, and find the distance between straight lines.  This one-page worksheet contains 4 multi-step...
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Worksheet
Curated OER

Calculating in Construction - Area

For Students 8th - 12th
In this area instructional activity, students solve 6 short answer problems. Students find the area of a figure composed of regular polygons such as triangles, rectangles, squares, etc given a sketch of the figure.
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Assessment
CCSS Math Activities

Smarter Balanced Sample Items: 6th Grade Math – Target H

For Teachers 6th Standards
Knowing the surface area certainly helps when deciding how much paint to buy before a project. Scholars solve for surface area, as well as volume and area, as part of the presentation from Grade 6 Claim 1 Item Slide Shows. Geometric...
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Lesson Plan
Beyond Benign

Hit the Deck: Area and Perimeter Review

For Teachers 6th - 8th
Designing a deck sure demands a lot of math. Future engineers and architects learn about the areas and perimeters of squares, rectangles, triangles, and composite figures. They apply their new knowledge to design a deck with a specified...
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Lesson Plan
Curated OER

Flip's Flag

For Teachers 5th
Fifth graders apply the symmetry and angle properties of polygons and use fractions to express the relationships between the areas of rectangles, squares, and triangles. They analyze various country flags and develop mathematical...
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Lesson Plan
Curated OER

Investigating Area Relationships

For Teachers 9th - 12th Standards
Learners investigate the area of various figures. They construct triangles and quadrilaterals using Cabri Jr. and discuss the relationships between different angles, side lengths, and figures.
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Worksheet
Curated OER

Area of Triangles

For Students 10th
In this geometry worksheet, 10th graders calculate the area of right triangles using the Pythagorean Theorem combined with the area formula. There are 14 questions with an answer key.
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Lesson Plan
Curated OER

Measuring the Area of Polygons

For Teachers 4th
Fourth graders use pattern blocks to explore areas of polygons. They explain that the answers to the area of the same polygon vary according to the units of measurement used. They visualize how different units of measurement can be used...
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Lesson Plan
Curated OER

Does the Area of the Quadrilateral Change?

For Teachers 5th - 6th
Students study area and quadrilaterals. In this multiplication and area lesson, students use Polystrip models to change rectangles to form different parallelograms. Students find the area of the models use a Geometer Sketchpad to find...
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Lesson Plan
Curated OER

Review Geometry - Week 8: (Triangles)

For Teachers 10th - 12th
In this triangle worksheet, students determine the length of the sides of a triangle, perpendicular lines, and the area of triangles. This two-page worksheet contains eight problems.
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Interactive
National Council of Teachers of Mathematics

Scale Factor

For Students 6th - 12th Standards
Does doubling mean everything doubles? Learners adjust the scale factor between two rectangles. Using the calculated measurements, pupils investigate the ratios between the lengths, perimeters, and areas of the rectangles.
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Instructional Video15:48
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Flipped Math

Sectors and Segments

For Students 9th - 12th Standards
It's a piece of pizza! Pupils learn about a sector of a circle as a slice of the circle and determine how to find its area. Scholars continue to find out how to calculate the segment of a circle based on the sector's area. At the end,...
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Worksheet
Curated OER

Perimeter and Area of Triangles 2

For Students 5th
In this measurement worksheet, 5th graders study the different triangles and then use the given measurements to find the perimeter and area for each.
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Worksheet
Curated OER

Area of Right Triangles

For Students 8th - 10th
In this are of right triangles worksheet, students read graphs and explore congruent triangles.  They find the area of rectangles and of right triangles.  This one-page worksheet contains explanations, instructions, and 8 problems.
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Worksheet
Curated OER

Area and Perimeter

For Students 10th
For this area and perimeter worksheet, 10th graders solve and complete 18 various types of geometry problems. First, they find the area of a figure shown with consecutive sides perpendicular. Then, students find the area and perimeter of...
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Worksheet
Curated OER

Area

For Students 7th - 8th
In this area worksheet, students solve and complete 20 different problems that include the measurement of various figures. First, they determine the area of each of the triangles, parallelograms and trapezoids. Then, students determine...
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Worksheet
Curated OER

Chapter 8 Extra Problems Worksheet: Similar Triangles

For Students 9th - 12th
In this similar triangles instructional activity, students solve 6 similar triangles. Students use proportions to solve similar triangles and similar rectangles.
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Lesson Plan
Curated OER

Exploring Centers of a Triangle: Part 2

For Teachers 10th - 12th
Students model and solve a real-world problem by constructing the centroid of a triangle. They explore relationships of the medians of a triangle and investigate how the centroid partitions each of the medians. Students investigate...
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Lesson Plan
Curated OER

Area Measures and Right Triangles

For Teachers 9th - 12th Standards
Your class will investigate the relationship among different triangles. This geometry lesson, demonstrates how to make a connection between triangles and the Pythagorean Theorem. They identify the missing side or angle of a triangle.
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Worksheet
Curated OER

Right Triangles

For Students 10th
In this right triangles worksheet, 10th graders solve and complete 5 various types of problems. First, they solve each of the triangles shown and find the area of each triangle. Then, students find the perimeter and area of the regular...
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Worksheet
Curated OER

Guided Notes on Area

For Students 9th - 10th
In this area instructional activity, students find the area of rectangles, triangles and circles. This eight-page instructional activity contains approximately 36 problems. Examples and explanations are provided. Answers are included at...
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Website
Curated OER

Bermuda Triangle

For Teachers 6th - 12th
Young scholars explore what the Bermuda triangle is and the theories as to why it is so mysterious.  In this mystery lesson students read and discuss the history and the mystery behind the Bermuda Triangle. 

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