Math Is Fun
Math Is Fun: Trigonometry
Students explore trigonometry concepts through this collection of definitions, lessons, examples problem-solving steps and strategies, and practice problems. Topics include solving triangles, trigonometric functions, theorems, and the...
Texas Instruments
Texas Instruments: Trig Review
These LearningCheck files are designed to determine if students know the unit circle.
CK-12 Foundation
Ck 12: Trigonometry: Cosine and Secant Graphs
[Free Registration/Login may be required to access all resource tools.] Define the cosine and secant graphs using a unit circle.
Paul Dawkins
Paul's Online Notes: Trig Functions
In this section we will give a quick review of trig functions. We will cover the basic notation, relationship between the trig functions, the right triangle definition of the trig functions. We will also cover evaluation of trig...
CK-12 Foundation
Ck 12: Algebra Ii: 4.5 Graphing Sine and Cosine
This section explores the graphs of sine and cosine functions. It investigates how these graphs are related to coordinates for different angles in a unit circle.
Purple Math
Purplemath: Inverses of Trigonometric Ratios
You know that you can take side lengths and find trig ratios, and you know you can find trig ratios (in your calculator) for angles. What is missing is a way to go from the ratios back to the original angles. And that is what "inverse...
Texas Instruments
Texas Instruments: Trying to Find a Best Fit: Heuristic Approach
In this activity, students can use geometry to determine the optimal location for a distribution warehouse of a department store chain.
Wikimedia
Wikipedia: Simple Harmonic Motion
Wikipedia offers great information on simple harmonic motion, including an image, formulas, and hyperlinked terms.
Math2
Math2.org: Algebraic and Conic Section Graphs
THis resource provides examples and information about Algebraic graphing.
TeachEngineering
Teach Engineering: Bees Are Master Pollinators
The study of biomimicry and sustainable design promises great benefits in design application. It affords means by which to promote cost-effective, resourceful, non-polluting avenues for new enterprise. These "blueprints" have existed...
Khan Academy
Khan: Lesson 16: Part 2 Coordinate Geometry; Trigo and Radians; Complex Numbers
2 OF 2 FOR ADDITIONAL TOPICS IN MATH. Students will use the coordinate plane and equations of lines and circles to describe figures; create the equation of a circle given the figure or use the structure of a given equation to determine a...
National Humanities Center
National Humanities Center: Toolbox Library: Associations (Ii), Making of African American Identity: V. 2
Chapter from a novel that describes the workings of a charitable society. This chapter, "The Sewing Circle," illustrates some of the various functions that institutions, especially the benevolent and charitable societies, performed in...
Other
Weather Questions: How Does Weather Radar Work?
Radar (which stands for RAdio Detection And Ranging) transmits microwaves in a focused beam. Some of this microwave energy bounces off of objects and returns to the radar to be measured. The radar sends pulses of energy, rather than a...
Math2
Math2
This is a site for students and teachers of all grade levels. If you are looking for math tables, general information about math topics, or you would like to ask a question, this is the site to visit.
Lawrence Hall of Science
The Math Page: Trigonometry
Concepts in Trigonometry are explained and illustrated here by a member of the math department at Borough of Manhattan Community College.
Other
Ctte: Geometer's Sketch Pad Activities
This site offers numerous activities for middle school and high school students to explore using Geometer's Sketch Pad.
Curated OER
Unesco: China: Fujian Tulou
Fujian Tulou is a property of 46 buildings constructed between the 15th and 20th centuries over 120 km in south-west of Fujian province, inland from the Taiwan Strait. Set amongst rice, tea and tobacco fields the Tulou are earthen...
Curated OER
Eternal Egypt: Metal Censer With a Domed Lid
A metal censer with a hemispherical body and a domed lid. The top of the domed lid has a pointed tip in the shape of a flower with petals and with two round loops. The main part of the lid is decorated with horizontal perforated bands,...