Curated OER
Introducing Trigonometry
Eleventh graders explore the three basic trigonometric functions. In this trigonometry/Algebra II lesson, 11th graders use GeoGebra and the unit circle to define the ratios of sides is a right triangles as they examine the full domain...
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Angles and Arcs
In this angles and arcs worksheet, 10th graders solve 8 different problems that relate to determining the measure of various angles and arcs of a circle. First, they define a central angle and the difference between a major and minor...
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Concurrence
In this concurrence activity, 10th graders solve 10 different problems related to determining various concurrences. First, they determine which type of triangle has two altitudes outside of it. Then, students determine the distance...
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The Surface Area of a Cylinder
Students find the circumference and diameter of several circles and calculate the surface area of cylinders. In this surface area of a cylinder lesson plan, students use rectangles and lids to make several cylinders. They calculate the...
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Math 155 Review Worksheet 5
In this college level Calculus worksheet, students find the derivative of the given function and find the rate of change of the area of a circle with respect to its circumference. The two page worksheet contains seven...
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ExplorA-Pond: 6th Grade Area and Random Number Tables
Sixth graders estimate surface area of a pond using a random number table.
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Tree Measurement
Measure a tree? Yes, measure a tree! Students get outside and measure a tree's trunk, crown, and height. Each group compares their answers to determine if any re-measuring is necessary. Once back in the classroom, students make bar...
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Computing Perimeters of Rectangles
In this math learning exercise, students compute the perimeters of rectangles, regular polygons, and irregular polygons. Students also compute the circumferences of four circles, given the radius.
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Perimeter and Area
Young scholars review concepts of area and perimeter, find area and perimeter of circles, practice calculating circumferences with a calculator, and calculate area using pi button.
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Measuring Angles
In this measuring angles worksheet, 10th graders solve and complete 26 various types of problems. First, they use a protractor to find the measurement of each angle. Then, students state the Angle Addition Postulate for the three angles...
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Pumpkin Predictions
In this mathematical worksheet, students estimate and predict the height, stem length, diameter, circumference and weight of five pumpkins against their actual measurements.
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Sir Cumference and the Dragon Pi
Geometry adventurers study circumference of a circle as they listen to Sir Circumference and the Dragon Pi, by Cindy Neuschwander. In groups, they use string to measure the diameter and circumference of circular objects and...
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Intro to Circles
Seventh graders participate in an investigation into the concept of a circle. Finding the definition of a circle and how they are used in the real world is discussed. Then students write their own real world examples of circles.
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Fun Ideas for Getting A-Round in Math CIRCLES
Young scholars see circles in real life and have fun with them
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Unit Circle Triangle
Students find the different ratios of a right triangle. In this geometry lesson, students apply the concept of the Pythagorean theorem as they identify the different angles and parts of a Unit Circle. They find the ratios of sine,...
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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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Math Who Am I?
For this math terms puzzle worksheet, students read the description for each math term. Students try to guess what each term is. Students circle the third letter in the box to check their answers.
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Math Who Am I?
In this math facts review worksheet, students read the description of each math term and try to guess what the answer is. Students may check their attempts by circling the third letter in the box which gives the answer.
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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Arc Length and Sectors
Find the length of an arc. Students relate central angles to the area and length of a sector and graph circles on the TI to make predictions.
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Perimeter and Area
In this perimeter and area worksheet, 9th graders solve 17 various types of problems, mostly word problems related to determining the area or perimeter of a geometric shape. They also determine the area and perimeter of shaded portions...
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Graphs of Formulas
In this worksheet 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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Periodic Functions
In this calculus worksheet, students identify important rules and properties of the unit circle. They differentiate between polar and complex coordinates. There are 20 questions about the unit circle.
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Volume and Surface Area
In this volume and surface area learning exercise, 10th graders solve and complete 10 different problems that include using spheres to examine changes in volume and surface area. First, they complete the chart shown using the formulas...