Curated OER
Bubbles Everywhere!
Eighth graders use concrete and graphic models to derive formulas for finding perimeter, area, surface area, circumference, and volume of two- and three-dimensional shapes. This lesson is a fun way to practice measurement and circle and...
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Graphs of Formulas
In this activity students fill out a function table after reading a short word problem. This is a good way for students to practice the necessary skills for solving word problems or setting up algebra equations.
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Exploring Trigonometric Ratios
Young scholars calculate the different ratios using a right triangle. In this trigonometry lesson, students identify the sine, cosine and tangent of each side. They find the missing angles using the different ratios.
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Geometry Review
Seventh graders explore basic geometric definitions involving angles, area, and circumference. To reinforce basic geometric concepts, they play a "lightning Flash" card game. Students discuss chores or jobs that require the use of...
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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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Pi as a Ratio
Eighth graders measure the circumference and the diameter of circular objects and record the measured values of the circumference and the diameter in a table. They then record their measurements in centimeters and use their data to...
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Discovering Pi
Fourth graders are introduced and experiment with the concept of pi. Using this information, they discover the relationship between the circumference and diameter of circles. In groups, they practice measuring the circumference of...
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Sports Bag
Learners determine an efficient layout of the pattern pieces needed to make a sports bag with given dimensions and specifications. Given a word problem, data set and a diagram, students evaluate the information they have available and...
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Spaghetti Measure
Young scholars receive a copy of a "Spaghetti Measure" task sheet along with the scoring rubric. Students preview the task and the rubric prior to starting the task. tudeThey determine the circumference of a circle of spaghetti that will...
CK-12 Foundation
Length of a Plane Curve
Challenge your class to use straight lines when estimating the length of a curve. An engaging interactive allows individuals to place line segments one after another along the arc. Learners determine that the more lines used, the better...
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Word Roots 2: Fin, Sed, Fer Intermediate-Word Search
Make learning Latin roots a game! After you have introduced the roots fin, sed, and fer, learners can use this word search to build their vocabulary. (Within the word search are words containing these roots.) You can further the activity...
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Around and Across
Tenth graders investigate the circumference and diameter of a circle. In this geometry lesson plan, 10th graders relate circumference to diameter. They create a scatter plot to estimate the value of pi.
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Pumpkin Math
Students examine a pumpkin and make several estimations based on the number of lines around it, its circumference and the number of seeds it has.
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"Sir Cumference and the First Round Table" by Cindy Neuschwander
Students experiment with rearranging shapes to better visualize the Congruence and relationship of geometric shapes.
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Round About Measurement
In this circumference measurement worksheet, students make a plan for measuring around objects. Students estimate and then measure around a trash basket and pencil holder. Students write if it is easier to measure around an object or a...
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Math All Around Us
Students identify real world problems from given story problems. For this story problem lesson, students find places, events or items in the school environment that can be used to create story problems. Students take a picture of the...
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Robot Lesson
Students identify and use descriptive writing and measurement terms to describe a student-created robot. Then they construct robots of materials available and then use AlphaSmarts or Danas to describe the robot using only the dimensions....
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Plain Figures And Measuring Figures
Seventh graders investigate the mathematical concept of a sector. They apply the concept to an example problem and then move into a more complex application. They find the area of the side of a cone. This is done as students calculate...
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Light Bounce
Students solve problems involving triangles. For this geometry lesson, students apply properties of triangles to find the missing angles and sides. They identify angles of parallel lines cut by a transversal.
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Who Let the Dogs Out?
Students calculate the perimeter and area of polygons. In this geometry instructional activity, students apply formulas of perimeter to solve geometric problems. They calculate the area of a dog fence and create ways to keep the dog in...
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Shgar Cube Igloo
Students create a sugar cube igloo. In this art activity, students use sugar cubes to create an igloo. Students glue the cubes together, dust with sugar and allow the project to dry.
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Cylinder Volume Lesson Plan
Tenth graders define the formula for cylinders and use it to solve real world problems. In this geometry lesson, pupils differentiate between area, perimeters, 2D shapes, 3D shapes, and volume of prisms, cylinders and spheres. They...
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Hexagoning the Circle
Students explore similarity to see that the area of a circle should be a constant times the square of its radius. Students create a hexagon. Students share their designs with the class.
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Fun Ideas for Getting A-Round in Math CIRCLES
Students see circles in real life and have fun with them