Texas Instraments
Angles in Circles
Teach your learners how to investigate the relationship between a central angle and an inscribed angle which subtend the same arc of a circle. The dynamic nature of Cabri Jr. provides opportunity for conjecture and verification.
Curated OER
Exploring the Circular Motion of a Tennis Ball
High schoolers are introduced to the concept of circular motion. In groups, they participate in experiments to discover the law of inertia. They describe how forces act on objects during a circular motion. To end the lesson, they use...
Curated OER
Inscribing a Circle in a Triangle
Pupils investigate inscribing a circle in a triangle. They use Cabri Jr. to draw a triangle, locate the incenter, and use the distance from the incenter to a side of the triangle to inscribe a circle. The dynamic nature of the geometry...
Curated OER
Calculate the Radius
In this calculating radius learning exercise, 6th graders find the radius of 5 circles given the circumference information. Students must write the radius on the line provided and a box is provided to them to show their work.
Curated OER
Calculate the Diameter
In this diameter instructional activity, 6th graders find the diameter of 5 circles. Students are given the formula for circumference and circumference information along with a blank box to complete their work.
Curated OER
Percentages: Circle the Dots
In this percentages worksheet, students will circle 25%, 50% and 75% of the dots in different boxes. There are a total of 24 boxes.
Curated OER
Decimal Circles
For this math worksheet, learners determine which decimal numbers are represented by twenty illustrations. Each illustration includes form one to four circles shaded in different ways.
Rational Number Project
Rational Number Project: Initial Fraction Ideas
Deepen the fractional number sense of young learners with this introductory lesson on equivalent fractions. After completing a short warm-up activity, children go on to work in pairs using fraction circles to complete a table of...
Illustrative Mathematics
Two Wheels and a Belt
Geometry gets an engineering treatment in an exercise involving a belt wrapped around two wheels of different dimensions. Along with the wheels, this belt problem connects concepts of right triangles, tangent lines, arc length, and...
Curated OER
Dan's Badge
Students solve a math problem using area formulas of circles and squares. They read and discuss the problem, analyze images of badges, reconstruct the badge from the problem using circles and rulers, and share the solution with the class.
Healthy Native Youth
Chapter 2: Learning About Adolescence
The Native American symbol, The Circle of Life, represents life's spiritual, physical, mental, and emotional well being. By way of deep discussion, and two games, the lesson uses the Circle of Life to explore the stages of...
Curated OER
Literature Study of the Civil War Era
Learn more about the Civil War. Young scholars will choose a novel based on the Civil War to learn more about the viewpoints of that time period. They will then discuss the roles of the members of a Literature Circle and then participate...
Illustrative Mathematics
Designs
A resource that makes for excellent group work as learners 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...
Super Teacher Worksheets
Literature Circle Packet
Looking to set up literature circles in your class? Use these materials to support pupils when they meet in groups. Pupils take on various roles over the course of reading and meet with their groups to share the work they have done on...
ReadWriteThink
Literature Circles: Getting Started
Make reading more enjoyable and interactive with literature circles! Here you'll find detailed lessons to begin the literature circle process. Ten lessons introduce each role learners take on. Literature circle roles include...
Curated OER
Math Handbook: Trigonometry
You'll be spinning in unit circles once you read through this jumbo-sized resource of everything you need to know about trigonometry. Each page has color-coded examples with explicit directions that detail the problems and...
Curated OER
SuperShapes, Part 1; "Tri"ing Triangles
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...
Curated OER
Introduction to Representing and Analyzing Data
Represent data graphically. Allow your class to explore different methods of representing data. They create foldables, sing songs, and play a dice game to reinforce the measures of central tendency.
Lane Community College
Review Sheets: Basic Mathematics 2
A good mix of Pre-Algebra problems, learners tackle everything from proportions and equations, to polygons and circles. The sections are broken up by topic with a list of the skills that are required to complete the questions.
Curated OER
Parts of a Circle
Sixth graders use yarn, paper plate, and other materials to identify parts of a circle. In this parts of a circle lesson plan, 6th graders identify the circumference, radius, diameter, and other parts of a circle.
National Gallery of Canada
Counting Circles
Learners look at bands of colors and estimate how many rings of color there are. While working in groups, they come up with a plan of how to accurately count the rings. They attempt to find a pattern in the colors, and decide whether...
Curated OER
Conjectures of Intersecting Circles
Students make conjectures of intersecting circles. In this geometry lesson, students observe circles and their position in space. They investigate and observe two and three dimensional objects.
Curated OER
Conjectures For Intersecting Circles
Students identify properties of circles. In this geometry lesson, students identify the center of two intersecting circles.They use Cabri software to create circles and move it around to make observation.
Curated OER
Circles and Their Equations
In this circle and their equations worksheet, students read about circles and algebraic equations, look at examples and complete exercises.
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