Khan Academy
Khan Academy: Start Here! Overview of Modeling Grass With Parabolas
This is an overview of modeling grass with parabolas. In this topic we're going to explore how realistic blades of grass are modeled using parabolic arcs. It include two lessons: Lesson 1: Modeling grass with parabolas (Grades 5+) and...
Khan Academy
Khan Academy: Introduction to Japan
Japan is an island country consisting of four major and numerous smaller islands. The islands lie in an arc across the Pacific coast of northeastern Asia, forming a part of the volcanic "Rim of Fire." From north to south this chain of...
Khan Academy
Khan Academy: Inscribed Angles
Practice the relationship between inscribed & central angles that are subtended by the same arc length.
Cuemath
Cuemath: What Is a Radian?
A comprehensive guide for learning all about radians with definitions, formulas, the arc length formula, angles, the circumference, the radius, solved examples, and practice questions.
PBS
Pbs Learning Media: Sky Patterns: Sun, Moon, and Stars
Observe the regular, predictable patterns of the Sun, Moon, and stars in the sky in this media gallery from WGBH. Interact with the animated storybook to observe and predict patterns of the Sun, Moon, and stars over a day and analyze...
Khan Academy
Khan Academy: Challenge Problems: Inscribed Shapes
Solve three challenging problems that apply properties of inscribed shapes to find an arc length or a missing angle.
Khan Academy
Khan Academy: Inscribed Angle Theorem Proof
Proving that an inscribed angle is half of a central angle that subtends the same arc.
BBC
Bbc: The Hundred Years War
The Hundred Years' War was fought between 1337-1453 between England and France. The war had many brief pauses where a treaty led to a short-lived peace until one side broke the pact and war resumed. This in-depth analysis covers the...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Applications of Integrals
Hotmath provides 24 practice problems dealing with integral applications. Each of the practice problems include a step-by-step guide for solving their application.
University of St. Andrews (UK)
University of St. Andrews: Elliptic Functions
Good site with many of the elliptic functions given.
Math Open Reference
Math Open Reference: Constructions
Learn about drawing shapes using only a compass and straight edge or ruler with out measuring any lengths or angles.
Science Struck
Science Struck: Comparison: Smaw, Fcaw, and Gmaw Welding Methods
Explains what welding is and provides a detailed comparison of three different methods of doing it, including their processes, uses, advantages, and disadvantages.
Pennsylvania State University
Acoustics and Vibration Animations: Demonstrations: The Simple Pendulum
A series of graphics, downloadable animations and text describe and explain the motion of a pendulum. Some sections require an understanding of calculus.
Wolfram Research
Wolfram Math World: Inverse Sine
This is a math site on the inverse of sine. Includes charts, color graphs, formulas including the Maclaurin series, as well as links to math terms and subject areas used within the site.
TeachEngineering
Teach Engineering: Keep in Touch: Communications and Satellites
How do we communicate with each other? How do we communicate with people who are close by? How do we communicate with people who are far away? For this lesson, learners will explore the role of communications and how satellites help...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems: Circles
Practice using your graphing calculator for drawing circles and for finding measurements for circles and parts of the circle. If you get stumped or if you would like to check your work, then select the View Solution button, which is...
CK-12 Foundation
Ck 12: Geometry: Inscribed Angles in Circles
[Free Registration/Login may be required to access all resource tools.] This concept teaches students properties of inscribed angles and how to apply them.
CK-12 Foundation
Ck 12: Geometry: Inscribed Quadrilaterals in Circles
[Free Registration/Login may be required to access all resource tools.] This concept teaches students properties of inscribed quadrilaterals in circles.
CK-12 Foundation
Ck 12: Plix: Island Chain Formation: Plate Tectonics Through Earth History
[Free Registration/Login Required] This site contains information and a quiz about how an island chain forms.
University of Maryland
Thinking Problems in Oscillations and Waves: Pendulum
A series of thought-intensive, multichoice questions concerning pendulums and provided for by the University of Maryland. A downloadable software program on pendulums is also included.
Johan Claeys
Math Abundance: The Circle: Basic Concepts
Goes over the equation of a circle, parametric equations of a circle, intersection of circle and line, tangent line in a point of a circle, etc.
Math Slice
Math Slice: Math Match Game
Test your geometry aptitude using this interactive matching game. Match pictures and symbols to the correct definition. Answers are verified immediately. Winners can earn as much as 10,000 dollars and have their name posted for the day.
CK-12 Foundation
Ck 12: Earth Science: Volcanoes at Hotspots
[Free Registration/Login may be required to access all resource tools.] Volcanoes can form at hotspots away from plate boundaries. This article discusses hotspot activity and how it leads to volcanism in the oceans.
CK-12 Foundation
Ck 12: Earth Science: Ocean Ocean Convergent Plate Boundaries
[Free Registration/Login may be required to access all resource tools.] Covers convergent plate boundaries and oceanic plate subduction.
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