Curated OER
Geometry of Circles - Week 7 (Area & Circumference)
In this circle worksheet, students solve problems involving the circumference, area and arc length in a circle. They explore the union of circles and semicircles, as well as the line segments tangent to the circle. This two-page...
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Diameter, Radius and Area
Students calculate the diameter, radius and area of a circle. For this geometry lesson, students investigate the different ratios of a circle. They calculate the surface are of each circle.
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Exploring Area/Perimeter Through Coordinate Geometry
Students explore area and perimeter through coordinate geometry using student literature, hands-on manipulatives, and the Internet.
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Linear/Planar Geometry - Week 5
In this linear and planar geometry worksheet, young scholars use the Pythagorean Theorem, equation of a line, slope of a line and area formulas to solve problems. This three-page worksheet contains seven problems.
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Area, Perimeter Word Puzzle
Learners measure planes and solids. For this geometry lesson, students find the area and perimeter of different polygons.They complete a word puzzle to review their vocabulary words.
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Introductory to Area (Squares, Rectangles, and Triangles)
Students explore the concept of finding area. In this finding area lesson plan, students use knowledge of area of triangles to find area of squares and rectangles. Students find area of irregular figures by breaking the figure down into...
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Surface Area with Polydrons
Students explore measurements by analyzing geometric shapes. In this surface area lesson, students identify the terms volume, weight, perimeter and area in order to find the requested measurements of specific polygons. Students utilize...
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Geography: Lengths, Perimeter, and Area of Similar Objects
Sixth graders explore characteristics of similar objects. Using attribute blocks, they explore the ratios of the perimeter, area and side length in similar shapes. They calculate and compare the area of shapes.
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Geometry in Nature
Students examine how the circumference, diameter, and the relationship of Pi of a circle are related. They count the summer rings of a tree to determine its growth.
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Finding the Basal Area of a Forest Plot to Determine Stocking Levels
Young scholars use graphs and plots to measure the basal area and stocking levels. In this graphing instructional activity students work in the field the use their data to help them complete a lab activity.
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Algebra/Geometry Institute: Area, Circumference, Perimeter
Students solve area problems. For this area, circumference, and perimeter lesson, students solve area and perimeter problems using standard and metric units of measure. They identify the best customary unit of measure for a given...
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Perimeter and Area of 2D Shapes
Young scholars find the perimeter and area of circles, triangles, and rectangles. For this perimeter and area lesson, the teacher gives students formulas for each shape and measurement and works through examples on the board. While no...
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Areas of Polygons
Students calculate the are of regular polygons. In this geometry lesson, students create polygons on the computer and move it around to create different shapes. They explore the area of different polygons and how they inter-relate.
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Radius, Diameter and Circumference
In this circle worksheet, students use a drawing of a circle. The diameter is given. Students find the radius, circumference and area of the circle. On the second problem, students are shown a circle with a hole inside it. They compute...
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Circles and Pi
Students identify the relationship between the radius and Pi. In this geometry lesson plan, students calculate the circumference and area of a circle. They create visuals to help them see how the circumference relates to Pi.
Curated OER
SuperShapes, Part 1; "Tri"ing Triangles
An outstanding instructional activity on triangles awaits your math scholars. Learners focus on the triangle, which is the strongest of all polygons. They see the role that triangles play in the design of buildings, and learn about...
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Area Of Sectors
Student find the area of a sector of a circle. In this geometry instructional activity, high schoolers define the sector of a circle using a sketch. They find and identify examples of sector in the real world.
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Scale Factor- Surface Area and Volume
Students calculate the surface area and volume of shapes. In this geometry lesson, students create different scales and calculate the volume and area for each shape. They compare and contrast between the different scales and shapes.
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Surface Area of Cones
Students find the surface area of cones. In this geometry lesson, students calculate the dimensions of each three-dimensional shape and use the correct formula to solve the problem. They relate concepts of cones to the real world.
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Area and Perimeter Review
Students calculate the area and perimeter of different shapes. In this geometry instructional activity, students name the different polygons based on their number of sides. They use the correct formula for each shape to calculate the...
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Radians, Arc Length, and the Area of a Sector
In this college level geometry worksheet, students convert between degrees and radians. Students determine arc length and solve problems involving the area of a sector. The four page worksheet contains seventy-four problems. Answers...
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The Circle's Measure
Students explore circumference and diameter. In this math activity, students apply their knowledge of circumference and diameter to solve mathematical riddles. Students apply this knowledge to find circumference and diameter of various...
EngageNY
Ptolemy's Theorem
Everyone's heard of Pythagoras, but who's Ptolemy? Learners test Ptolemy's Theorem using a specific cyclic quadrilateral and a ruler in the 22nd installment of a 23-part module. They then work through a proof of the theorem.
Curated OER
Area Unit
Students solve the area for parallelograms,squares, rectangles, trapezoids, and triangles. In this geometry lesson, students compare and contrast two dimensional shapes and apply their properties to solving real life scenarios. This is a...