In this walk around the earth problem, students determine how much farther your head travels than your feet. They use the circumference of the earth and pi to determine the distance traveled. This one page worksheet contains one...

In this circles and ellipses worksheet, students solve and complete 5 different types of problems. First, they write each equation in standard form. Then, students graph and label Write the equation of the ellipse whose center is the...

Students classify angles. In this angles activity, students explore the characteristics of angles, triangles, quadrilaterals and circles. They identify polygons and sing a classifying angles song. Students participate in a...

What is an annulus? Pupils first learn about how to create an annulus, then consider how to find the area of such shapes. They then complete a problem set on arc length and areas of sectors.

Communication is the key. A presentation provides 25 sample items for Claim 3, Communicating Reasoning, for the Smarter Balanced High School Math assessment. Items require pupils to answer the question and provide logical reasoning to...

Learners take on the role of astronomers, calculating conditions necessary for a total solar eclipse. Concepts of similar triangles and properties of circles come together as pupils create ratios and use real measurements in determining...

Long considered the symbol of safe harbor and steadfast waiting, the lighthouse gets a mathematical treatment. The straightforward question of distance to the horizon is carefully presented, followed by a look into the...

How can you formally assess understanding of circle concepts? Pupils take a mid-module assessment containing five questions, each with multiple parts.

Explore methods for finding the volume of different three-dimensional figures. The 20th lesson in the 25-part series asks learners to interpret diagrams of 3-D figures and use formulas to determine volume. Scholars must use the...

Help learners find joy in facing mathematical challenges. The questions posed on this worksheet encourage young mathematicians to utilize skills learned throughout a geometry unit, and to apply themselves and persevere through...

Develop young mathematicians' knowledge of two- and three-dimensional shapes with this geometry workbook. From learning about the classifications of different shapes and figures to calculating their area, perimeter, and volume, this...

Two practice pages with 10 problems each show circles and give their radii. Learners calculate the area. Answers are provided. 

For this parts of a circle worksheet, students write symbols with given points to indicate that the points represent, i.e. "radius" etc. 

In this parts of a circle worksheet, students correctly identify labeled parts of circles, choosing from diameter, chord, radius or center. A reference web site is given for additional activities.

In this area of sector and segment learning exercise, 10th graders solve and determine the area of 10 different illustrations. First, they determine the area of a shaded sector given the measurements. Then, students determine the area of...

In this area of sector and segment worksheet, students find the area of a shaded sector. Given the central angle of a segment and the radius, students identify the area of a sector. This one-page worksheet contains ten problems.

Fifth graders calculate the diameters and radius of planets as a book is read to them. In this diameter and radius lesson plan, 5th graders read the book Space Circles and calculate the measurements based on the information in this book.

In this online math worksheet, students determine the circumference of a variety of circles given their diameter. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A...

In this circle worksheet, students calculate the circumference and area of given circles. They determine the perimeter of a shaded area, and give explanations to support problems. This two-page worksheet contains 3 multi-step problems.

In this geometry problem solving activity, students answer 8 words problems based on their knowledge of circles, circumference, radius, diameter, and perimeters. They show their work on the sheet between problems.

Students explore circumferences, diameters, and radii. In this math lesson plan, students measure circumferences in inches and compute radii and diameters, given different circumferences.

Students find the length of the arc of a circle. In this geometry lesson, students calculate the length of an arc and find the measure of the central angle given the length of the arc. They convert between linear and angular speed. They...

In this geometry learning exercise, students find the sum of the perimeters of three small circles.  These small circles are tangent to each other and to a larger circle.  The centers of the small circles have their centers on...

For this sun worksheet, students read about calculating the internal density and mass of the sun. Kids use a given formula for the internal density of the sun's gases which students use to solve four mathematical problems.