Worksheet
Curated OER

Circle Terminology

For Students 7th - 12th
In this geometry worksheet, students identify radii, diameters, chords, tangents, secants and other terminology associated with circles.  The one page worksheet contains eighteen problems.  Answers are not provided. 
Lesson Plan
Curated OER

THE AREA OF A CIRCLE

For Teachers 7th - 12th
Learners examine the relationship between circumference and diameter and how to use the formula to find the area of a circle.  In this circle lesson students divide into groups and complete an activity. 
Lesson Plan
Curated OER

Measuring the Sun's Diameter

For Teachers 7th - 12th
Students project and measure the suns image using a refracting telescope.  For this sun's diameter lesson students calculate the magnification of the telescope and determine the diameter if the Sun. 
Lesson Plan
Curated OER

Building a House Using Circles

For Teachers 2nd - 4th
Learners study circles and problem solving. In this critical thinking activity, students build a house using all of the circles given to them gluing them onto paper.
Lesson Plan
Curated OER

Kinematics of the Planar Continuum Snake Robot

For Teachers 9th - 12th
Young scholars calculate the length of an arc that surrounds an angle at the center of a circle of radius.  In this kinetic equations lesson students complete a lab and solve a kinematic equation.
Worksheet
Curated OER

Whiskery Lake Problem

For Students 10th
In this Geometry worksheet, 10th graders solve a problems involving area of a circle given information regarding surface area.  The one page worksheet contains one problem with answer. 
Lesson Plan
Curated OER

Care Homework #2

For Teachers 10th - 11th
In this Care Homework worksheet, learners solve a variety of multiple digit addition, subtraction, multiplication, and division problems that include fractions, decimals, and percentages. They demonstrate knowledge of geometric formulas...
Lesson Plan
Texas Instruments

Circle Equations

For Teachers 6th - 12th Standards
Students explore the coordinate plane. In this secondary mathematics activity, students follow a set of directions to plot points in the coordinate plane.
Lesson Plan
Curated OER

Evaluating the Products of Chords of a Circle

For Teachers 9th - 12th Standards
Pupils investigate chords and make predictions. In this geometry lesson, students graph circles and calculate the measurement of each chord. They perform the calculations and make conjectures.
Interactive
Curated OER

Identifying Shapes

For Students 3rd
In this identifying shapes worksheet, 3rd graders identify the picture and choose its correct shape from the choices given, then check answer online.
Worksheet
Curated OER

What do you know?

For Students 2nd - 5th
In this newspaper article instructional activity, students listen to the article their teacher reads and put a check if they know about the sentences the teacher reads or a circle if it is new information. Students do this for 6 sentences.
Lesson Plan
Curated OER

The Circumference of a Pumpkin

For Teachers 5th - 6th
Students complete a pumpkin circumference activity. In this pumpkin circumference lesson, students make a raw estimate and use a string to measure the circumference of a pumpkin. Students also define the term circumference.
Worksheet
Curated OER

Calculate Radius and Diameter, Estimate Circumference #2

For Students 5th - 6th
For this radius, diameter and circumference worksheet, students calculate diameter and estimate circumference of 2 given circles. A reference web site is given for additional activities.
Lesson Plan
Curated OER

Rectangles and Squares

For Teachers K - 1st
Young scholars identify two dimensional shapes in the school environment. In this basic shapes activity, students watch a video about rectangles and squares. Young scholars find examples shapes in their classroom and draw them. Students...
Lesson Plan
Curated OER

Measurement, Perimeter and Area

For Teachers 7th - 9th
Students explore the concept of measurement.  In this measurement lesson, students collect data about themselves such as height, finger length, neck circumference, foot length, and other body measurements.  Students cut squares...
Lesson Plan
Curated OER

Theorems and Formulas for Circles

For Teachers 10th
In this theorems and formulas for circles worksheet, 10th graders solve and complete 13 different types of problems. First, they create a graphic organizer for all the given formulas for circles. Then, students use the labeled pictures...
Lesson Plan
Curated OER

Three for the Money: The Degree/Diameter Problem

For Teachers 9th - Higher Ed
Students explore the concept of vertex-edge graphs.  In this vertex-edge graphs lesson, students try to construct a graph with a given diameter, number of vertices, size, and planarity.  Students construct various vertex-edge...
Lesson Plan
Curated OER

Math All Around Us

For Teachers 7th - 8th
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...
Organizer
Curated OER

Circle Halves

For Students K - 1st
In this circle worksheet, students study that two semi circles make a complete circle. Students cut out the two halves of the circle and paste them together on the big circle that is shown.
Worksheet
Curated OER

Circle Shapes

For Students K - 1st
In this shape activity learning exercise, students trace the circles on the tree and color them red. Students then trace the 3 large circles at the bottom of the page.
Worksheet
Curated OER

Grape Circles

For Students K - 1st
In this coloring shapes worksheet, students trace the circles in the grapes and color them purple. Students then trace the circles and triangles at the bottom of the sheet.
Worksheet
Curated OER

Circles and Triangles: Sun

For Students K - 1st
In this coloring shape activity, learners trace the circles and color them yellow. Students trace the triangles and color them orange. Learners then trace the circle and triangle at the bottom of the page.
Worksheet
Curated OER

Circles and Ovals: Flower

For Students K - 1st
In this coloring shapes activity, students trace the circles and color them yellow. Students trace the ovals and color them pink. Students then trace the ovals and circles at the bottom of the page.
Worksheet
Curated OER

Shapes and Colors: Circles and Ovals

For Students Pre-K - 1st
In this shape worksheet, students trace circles, coloring them yellow, then trace ovals and color them blue. Students also color a picture of a flower made of ovals and circles.