An outstanding lesson 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 triangle...

Four fabulous worksheets are included in this resource, all having to do with the measurement of angles. On the first, anglers will use a protractor to determine the degrees of 10 different angles. An arc is drawn on each. On the second,...

Through the use of Internet, video, and hands-on activities, youngsters learn the parts and characteristics of a circle. This fantastic lesson has some excellent website activities included in the plan. Your kids will have a much greater...

Students figure the diameter and circumference of a circle. In this circles lesson, students break into small groups and work together to find the answers then compare with peer groups. Students then make human circles and using string...

Listen to the story "Sir Cumference and the Dragon of Pi" and solve the riddle and to save Sir Cumference from the knights.  Your students will love mixing an activity with story and will practice their measuring skills while completing...

The difference between circumference and radius is the focus of this geometry lesson. After entering data into a spreadsheet which has the formula for circumference of a circle built into it, pairs of learners perform a hands-on exercise...

How thorough can your classes be? An engaging activity challenges scholars to create 36 unique permutations given a simple set of criteria. Through facilitation, they build systems to organize their results.

In this comprehensive video Duane demonstrates how to use a formula to determine the circumference of a circle. This clip is good because it shows how to determine circumference when the diameter is knows and when only the radius is known.

Using a circle with clock like hands, the tutor explains common angle measurements. She shows that a full circular rotation equals 360 degrees, a quarter rotation equals 90 degrees, a three-quarters rotation equals 270 degrees, and a...

Explore lines tangent to a circle. In this math lesson, students manipulate circles and lines on a TI calculator. They draw a circle  and analyze perpendicular lines intersecting the circle in only one place. This activity works best if...

Middle schoolers complete Part A: Dissecting a Circle. They generate their own chords within the circle. Students measure the various parts of the arc in the shot put pit. The first two measurements, the chord and distance from the...

In this geometry worksheet, students create circle, line and bar graphs using different comparisons of events. There are 24 questions with an answer key.

Use this area and circumference of circles worksheet to have learners solve 13 short answer problems. They find the area and circumference of circles given a radius or diameter measurement.

Middle schoolers calculate the circumference and area of a circle. In this geometry lesson, pupils relate the circumference of a circle to Pi. They use the radius and diameter to graph a circle.

Students review how to graph parabolas. They practice graphing two different parabolas using the vertex and table method. They solve problems related to graphing circles, determining the radius and the center.

Middle schoolers explore the concept of angles formed by chords.  In this angles formed by chords lesson plan, students apply the angles formed by chords in a circle theorem to determine the lengths of arcs.  Middle schoolers determine...

Hop, skip, jump, and roll! Hula hoops have a way of putting fun in motion. Young children interact in a variety of games involving small and large hula hoops. They will develop their motor skills and eye-hand coordination while playing...

Connect geometric shapes to your learners' lives with this worksheet. In order to complete this worksheet, young scholars must discover examples of triangles, squares, and circles at school, at home, and outdoors and list them on a...

In this math activity, students cut a circle. They fold to create an isosceles triangle. The triangle is folded to create a trapezoid. Students discuss the sum of the angles, and the measures of the angles. Students compare the ratios of...

Using a basic formula one can find the area of a circle. Duane walks learners through the steps needed to determine the missing variable, plug in the known variable, and solve to find the area of a circle. He provides two different...

Does watching a person do a math problem help you understand a mathematical concept? If it does then this clip will be a great help. The tutor in this clip completes a geometry problem involving tangents, circles, and the Pythagorean...

Students explore circles using a graphing calculator. In this circles lesson, students write the equation of a circle with a given center and radius length. Students find the most appropriate model for each combination of data they...

Learners derive the formula for the area of a circle. They form a rectangle by partitioning a circle using construction paper and scissors.

Third graders create angle eaters where they use circles with cut outs to identify right, obtuse, and acute angles. Students complete 1 angle eater.