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Worksheet
Curated OER

Arcs and Central Angles

For Students 10th
In this arcs and central angles worksheet, 10th graders solve and complete 25 different types of problems. First, they use the letters shown in the diagram to name each portion. Then, students find the measure of each arc or angle named....
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Worksheet
Mt. San Antonio Collage

Circles

For Students 9th - 12th Standards
Don't circle around the topic, but get right to the center with tons of practice regarding circles in geometry. The note-incorporated learning exercise provides guided practice through many topics such as central angles, inscribed...
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Lesson Plan
Curated OER

Inner Circle/Outer Circle Debate Strategy

For Teachers 3rd - Higher Ed
Arranged in facing concentric circles, half the class discusses an issue. The other half of the class takes notes which are then used to fuel a class discussion and to prepare editorial opinions on the topic at hand. So much emphasis is...
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Lesson Plan
Curated OER

The Solar System

For Teachers 9th - 12th
Students construct a sketch of the planets in our solar system using concentric circles and angles. In this solar system lesson plan, students plot the position of each planet on concentric circles using graph paper. The sun is included...
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Worksheet
Curated OER

Chapter 8: Circles

For Students 9th - 12th
In this circles worksheet, high schoolers define and sketch 20 terms about circles. Students sketch radii, chords, diameters, secants, concentric circles, etc.
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Unit Plan
Mathematics Vision Project

Circles: A Geometric Perspective

For Teachers 10th - 12th Standards
Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...
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Worksheet
Curated OER

Circles

For Students 10th
In this circles worksheet, 10th graders solve and complete 8 different problems. First, they find the two segments perpendicular to a given circle. Then, students find the line tangent to the circle illustrated and the sides marked. They...
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Worksheet
Curated OER

Circles

For Students 10th
In this circles worksheet, 10th graders solve and complete 8 different types of problems. First, they find the measures of each segment given the center of a circle. Then, students find the length of a side of a triangle shown within a...
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Lesson Plan
Curated OER

The Big Circle

For Teachers 2nd - 3rd
Students explore geography by participating in a mapping activity. In this concentric ring lesson, students utilize a poster board, string and markers to identify their current location within the entire world. Students write about their...
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Worksheet
Curated OER

Circles in Circles

For Students 4th - 5th
In this circle worksheet, students use a diagram of 4 concentric circles to complete a set of 4 questions. A reference web site is given for additional activities.
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Assessment
Concord Consortium

Circling

For Students 11th - 12th
Come full circle in learning about conic sections. Learners first look at the type of conic section formed when concentric circles intersect a standard coordinate plane. They then see which type forms when two sets of concentric circles...
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Activity
101 Questions

Apple Mothership

For Teachers 9th - 12th Standards
Explore Apple's spaceship office building. Built in the shape of a circle, the office building offers a unique floor plan challenge. Young scholars use the dimensions of the building to estimate the square footage for each employee. 
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Lesson Plan
Curated OER

Concentration vs. Solubility

For Teachers 7th - 9th
Students investigate the concentrations of solutions and solubility. In this concentrations and solubility lesson plan, students compare solutions of talcum powder in water and salt in water to have a visual of solubility. They perform...
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Worksheet
Curated OER

Applications of Hyperbolas

For Students 10th
In this hyperbola worksheet, 10th graders solve and complete 6 different problems. First, they determine the cross-section of a hyperbolic paraboloid curve. Then, students find where the cone intersects the ground in hyperbola as...
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Lesson Plan
American Chemical Society

M&M's in Different Sugar Solutions

For Teachers 3rd - 8th
To conclude a mini unit on the dissolving of M&Ms® candy coating, this instructional activity investigates whether or not the concentration of sugar in the solvent affects the dissolving rate. Consider having older science learners...
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Lesson Plan
Curated OER

Atomic Musical Chairs

For Teachers 5th - 8th
An engaging activity enlightens young chemists in this lesson on atomic structure. They play musical chairs through a series of concentric circles that represent electon orbitals. A laundry basket in the middle holds the protons and...
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Lesson Plan
Curated OER

Geometric Probablitiy: Spinners and Dartboards

For Teachers 8th - 10th
Sstudents explore and analyze the properties of geometric areas.  In this geometry lesson, sstudents use technology to simulate spinners and dartboards in order to fing areas of circles and sectors of circles and compare and contrast...
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Worksheet
New York Science Teacher

Planet Scaling using Extra Terrestrial Tools

For Students 7th - 10th Standards
Your class will use a set scale to convert diameters of planets to the model size, the diagram given to expand on the number of planets drawn as concentric circles, and examine the scale that would be needed to fit the larger planets on...
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Lesson Plan
Curated OER

Star Circles

For Teachers 9th - 11th
In this star circles worksheet, students solve six problems given a diagram of a time-exposure photograph of the stars. Students determine the scale of the image, the location of the North Celestial Pole, they identify Polaris and they...
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Lesson Plan
Curated OER

What's the Difference Between Concentration and Solubility?

For Teachers 9th - 12th
High schoolers discuss the difference between concentration and solubility as well as examine the difference in a hands-on activity. Using water and table salt, they experiment with solubility. They create different concentrations using...
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Lesson Plan
Curated OER

Kandinsky Cut Circles

For Teachers K - 2nd
Kandinsky definitely knows how to use the concept of shape in art. Kids get motivated to create artworks inspired by the amazing circle. They cut out several circles and glue them in concentric patterns on their paper. Tip: The book The...
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Lesson Plan
Curated OER

Connecting Formulas Related to Geometric Figures

For Teachers 8th - 12th
Students identify diagrams of quadrilaterals and circles by different names and classify the figures. They name the areas for each diagram and practice solving the formulas for each.
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Activity
Novelinks

The Martian Chronicles: Fishbowl Discussion

For Teachers 9th - 12th Standards
Ray Bradbury's The Martian Chronicles provides the text for a fishbowl activity. Class members to sit in concentric circles, with the center circle discussing the topics from the book, and the outer circle observing the participants.
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Lesson Plan
Illustrative Mathematics

Designs

For Teachers 6th - 8th Standards
A resource that makes for excellent group work as students explore the area and perimeter of different complex designs made up of squares and circles. The commentary gives a clear definition of perimeter, but suggests that group members...

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