Purple Math
Purplemath: Converting Between Radians and Degrees
Describes degrees and radians with respect to angles, the reason for the invention and use of radians, and how to convert between radians and degrees.
Math Open Reference
Math Open Reference: Circles
A complete reference guide to circles including parts, angles, and arcs. It provides definitions and interactive activities that enhance further explanation.
CK-12 Foundation
Ck 12: Geometry: Circle Circumference
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the circumference of a circle given the radius or the diameter. Students examine guided notes, review guided practice, watch...
CK-12 Foundation
Ck 12: Algebra: Sets and Symbols
[Free Registration/Login may be required to access all resource tools.] Classify real numbers as rational numbers, whole numbers, integers, and irrational numbers.
Rice University
Rice University: Cynthia Lanius: History of Geometry
Different cultures' contributions to Geometry are discussed.
CK-12 Foundation
Ck 12: Geometry: Area of a Circle
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to calculate the area of a circle. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Math Open Reference
Math Open Reference: Circle
Learn about circles with this handy reference guide. Provides a detailed definition, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Cuemath
Cuemath: Irrational Numbers
Learn how to identify irrational numbers. This lesson reviews the irrational number list, the difference between irrational and rational numbers, and whether or not irrational numbers are real numbers. Examples are provided along with a...
CK-12 Foundation
Ck 12: Interactive Geometry: 8.2 Area and Circumference of Circles
A deep dive into the area and circumference of circles.
Quia
Ixl Learning: Area of Circles
Brush up on your math skills relating to the area of circles then try some practice problems to test your understanding.
Clackamas Community College
Clackamas Community College: Alkynes
On this page from Clackamas Community College, the nomencalture, structure, and chemical reactions of alkynes are discussed.
Curated OER
Celebrity Numbers
This site explains why the numbers 0, 1, -1, e, and pi are more famous than other numbers.
Curated OER
Eternal Egypt: Ramesses the Third
King Ramesses the Third was the last great king in the New Kingdom. He defeated the Libyans and the Sea Peoples. He made new structures at Luxor, Karnak, Pi-Ramesse, Heliopolis, Memphis, Hermopolis and Abydos and in Nubia and Syria....
Curated OER
Science Kids: Science Images: Basic Calculator
This photo shows a basic calculator sitting on a desk. The value of Pi is written to five decimal places on the screen.
Curated OER
External
This site is provided for by the Texas A&M University. Archimedes contribution to finding the exact value of pi is discussed in this biography of Archimedes.
Wolfram Research
Wolfram Math World: Archimedes' Recurrence Formula
This page from Mathworld.com presents illustrations and equations involving Archimedes' Recurrence Formula.
ClassFlow
Class Flow: Volume of Cylinders
[Free Registration/Login Required] This flipchart guides the students through the process of determining the volume of a cylinder. Students learn to transform formulas in order to find the missing elements.
ClassFlow
Class Flow: Area of a Circle
[Free Registration/Login Required] This flipchart reviews basic geometric forms in nature and real objects. Students are then given opportunities to find the area of circle and parts of a circle, given the radius and/or diameter of the...
University of Cambridge
University of Cambridge: Nrich: Watching the Wheels Go `Round and `Round
Use the formula for the circumference of a circle to solve the challenge of this problem. The solution is available at this one page website.
Teaching Treasures Publications
Teaching Treasures: Year Seven Math:true or False
This interactive worksheet covers such topics as geometry, measurement, number sense, and math in the real world.
Annenberg Foundation
Annenberg Learner: Math in Daily Life: Home Decorating
This exhibit is designed to show students that geometry really does apply to the real world. By taking viewers through a home decoration project, students learn how to calculate area of a rectangle and circle.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: The Area of a Circle
An investigative approach is given to exploring finding the area of a circle.
Curated OER
Basic Ideas in Greek Mathematics
This page discusses some of the mathematical problems addressed by some famous Greek mathematicians, including Zeno, Archimedes, and Eudoxus.
Curated OER
Basic Ideas in Greek Mathematics
This page discusses some of the mathematical problems addressed by some famous Greek mathematicians, including Zeno, Archimedes, and Eudoxus.
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