Curated OER
Inscribed and Central Angles in a Circle
In this geometry worksheet, students find the missing angle that is inscribed inside of a circle. They define vocabularies related to the circle. There are 17 questions.
Exploratorium
Measuring and Mapping the Playground
The school playground is a great place to learn about math. Pupils measure the dimensions of a playground using baby steps and individual strides. They use their measurements to create a scale drawing of the playground by applying an...
Curated OER
Angles and Arcs
Students identify the relationship between angles and arcs. In this geometry lesson, students rotate and move the circle around to create different arcs on the TI-Navigator. They differentiate between major and minor arcs.
Curated OER
Positive and Negative Angles and Arcs
To better understand that the intersection point of two lines lies inside a circle, learners use their keen measurement skills. They discuss arcs, rays, tangent lines, and reflex angles. Then, they put their skills to work as they...
Curated OER
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.
Curated OER
Circles
In this circles instructional activity, 10th graders solve and complete 45 different problems. First, they find the measure of each numbered angle given the arc measures as indicated. Then, students write their response on the lines...
Curated OER
Circular Motion: Target Practice
Students demonstrate direction of velocity of an object in circular motion. They discuss the mathematical formula, and demonstrate the formula using a string, rubber stopper and a target.
Curated OER
Secants, Tangents and Arcs
Young scholars identify chords and angles. In this geometry instructional activity, students calculate the length of the chords inside and outside of-the circle. They differentiate between tangent and secant lines.
Curated OER
Radian Measure
Young mathematicians identify central angles, arcs and radius of circles in this pre-calculus instructional activity. They identify the proportion of the circle based on its radius while they convert between degrees and radians...
Curated OER
Radian Measure
In this Algebra II/Pre-calculus activity, students explore radian measure of an angle and convert between degree and radian measure. The seven page activity contains explanation, examples, and nineteen multi-part problems. Answers are...
Curated OER
Circles and Angles
Young scholars identify tangents, chords and secants. In this geometry activity, students graph circles and identify angles created by secant lines, tangent lines and chords.
Curated OER
Finding Areas of Triangles, Rectangles, and Circles
Learners find the areas of geometric shapes. In this geometry activity students find and measure the sides, perimeters, and areas of quadrilaterals, triangles, and circles. Learners relate the measures to the others by using formulas.
Curated OER
Arcs in Circles
In this arcs in circles worksheet, 10th graders identify 10 different circles and the measurement of their arcs. First, they determine the length of a minor arc to the nearest integer. Then, students determine the radius of a circle...
Curated OER
Arc Length - Horse
Students define an arc and calculate its length. In this geometry lesson, students find examples of arc in the real world. They show their understanding of arcs through problem solving.
Curated OER
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...
Alabama Learning Exchange
Radians: Just Another Way
Serve up angle measurements on paper plates. Pupils use paper plates and paper-folding techniques to create a unit circle with conversions for special angles. Using their plates, learners explore the relationship between angle...
Balanced Assessment
Curvy-Ness
Curves ahead! Develop a numerical measurement of curvy-ness. The class is challenged to come up with a definition of curvy that can be applied to curves. The class members use their defined measurement to describe a curve.
101 Questions
Rotonda West, FL
The shortest distance from point A to point B is a straight line—or is it? Young scholars determine the shortest route either along a circular path or through the center of the circle. Learners gain a unique perspective on arc length and...
Curated OER
Measuring the Earth
Young scholars identify types of arcs and angles in a circle, find the measure of arcs and angles, and solve real world problems involving lengths of segments in circles, lengths, and areas.
Curated OER
Solve for the Arc Length Problems
In this arc length worksheet, students solve for the arc length for four angles. Three of the angles are given in degrees while the other angle length is given in radians. The solutions are not provided.
Curated OER
Numerical Practice with Big Circles
In this numerical practice activity, students determine the measurement of given angles. Using trigonometry ratios, they find the measurement of ten angles on this one-page activity.
Curated OER
Quiz: Angles in Circles - Angles Outside the Circle
In this angles in circles worksheet, students explore angles outside a circle. Using given trigonometric ratios, they find the missing angle measurement or the length of a line. This one-page worksheet contains ten problems.
Curated OER
Exploring Circles
In this exploring circles worksheet, 10th graders solve 12 different types of problems related to measuring circles in geometry. First, they refer to the figure on the sheet to name the center point, the three radii of the circle, the...
Curated OER
Small Angle Calculations
Learners work with circles, angles and estimating angles in the night sky. In this circles and angles lesson, students practice measuring a degree using the circumference of a circle and apply the degree to determine a way to use their...