National Council of Teachers of Mathematics
The Math Forum: Investigating the Golden Ratio
This site gives a diagram of a golden rectangle, the value for the golden ratio, and a few problems for students to work relating to the golden ratio. This site does not however explain the significance of this ratio.
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: The Equation of a Straight Line
Here is a site that clearly and thoroughly explains linear functions and the equation of a straight line. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to...
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: Symmetry
Here is a site that clearly and thoroughly explains the symmetry of even and odd functions and how to test for these types of symmetry. There are example problems solved, problems for the student to attempt, and answers to the student...
University of Georgia
University of Georgia: Inter Math: Transformation
This site defines transformation and lists several different examples of transformations. Be sure to follow the links to related terms, everyday examples, challenging problems, more information, and the interactive check point involving...
Analyze Math
Analyze Math: Table for the 6 Trigonometric Functions for Special Angles
Learners explore the special angles for the six trigonometric functions. The special angles can be used to solve trigonometry problems. The table gives the values of sine, cosine, tangent, cotangent, secant, and cosecant for special angles.
Math Medics
S.o.s. Math: Real Number Line, Interval Notation
This lesson explains the different types of notation used in describing solutions of graphs on number lines. Covers the basics as well as set and interval notation. Practice exercises and their solutions are also available to you.
Math Is Fun
Math Is Fun: Definition of Abacus
You can use an abacus to count, add, subtract, multiply and more. Try this interactive abacus and see if you can make the numbers. Choose "here's more" for some clues. Good luck!
Other
U. Of Wisconsin: Formulating Statistical Questions and Collecting Data
This slideshow gives a detailed explanation of the characteristics of statistical questions and how they differ from other types of questions, the types of studies, and the methods for collecting data. It describes the case of Clever...
University of Regina (Canada)
University of Regina: Math Central: Graphing Inequalities of Conic Sections
A solution to a student submitted problem is given. The problem involves systems of conic sections with inequalities.
Curated OER
S.o.s. Math: Measure of an Angle
This lesson gives a tutorial on the measure of an angle. Includes sample problems and solutions.
Writing Fix
Writing Fix: Ace: Reading Mathematics [Pdf]
This site includes a graphic organizer to help students use the ACE acronym to help them read word problems with high comprehension. In the graphic organizer, students' reading of word problems requires them to "ask" [A], "choose" [C],...
Writing Fix
Writing Fix: Ace: Writing Mathematics [Pdf]
In this graphic organizer, steps for solving word problems are included. Questions for students to ask themselves for what to do to "answer" [A], "computer" [C], "check" [C], and "explain" [E] are included. [Requires Adobe Reader.]
AAA Math
Aaa Math: Fraction Parts Eighths
This lesson describes eighths and gives practices and games identifying various amounts of eighths. Also shows other fractions visually.
University of Cambridge
University of Cambridge: Nrich: A Cartesian Puzzle
This one page website lets you practice plotting points on the coordinate grid. See if you can find the missing coordinates to complete the shapes. When you are finished the solutions are only a click away.
University of Cambridge
University of Cambridge: Nrich: Transformation Tease
Follow the directions at this one page website. You will get lots of practice plotting points on the coordinate grid and experience with transformational geometry.
University of Cambridge
University of Cambridge: Nrich: Treasure Island
See if you can find what the ordered pairs are for each of the items on the map. This one page website will help you practice plotting points on the grid. You can check the answers right on the website.
University of Cambridge
University of Cambridge: Nrich: What Are You Plotting?
This one page website is for practicing graphing ordered pairs. It lets you know right away if your choice is incorrect. At the bottom of the page their is a challenge with the solution just a click away.
Sophia Learning
Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 2
This lesson explains how the central angle can be used to determine the area of a sector and presents several practice problems. Includes answers and a short quiz. It is 2 of 5 in the series titled "Finding the Area of a Sector Using the...
Sophia Learning
Sophia: Finding the Equation for an Ellipse: Lesson 1
This brief lesson shows how to find the equation for an ellipse given its foci and vertices and presents a problem to try. Includes a short quiz. It is 1 of 4 in the series titled "Finding The Equation For An Ellipse."
Curated OER
York University: Piecewise Defined Function
Provides a problem with piecewise defined functions and gives hints to work through the problem.
Curated OER
Align59
This lesson gives a tutorial on the measure of an angle. Includes sample problems and solutions.
Curated OER
Tex2html Wrap Inline181
With a bit of a misleading title, this lesson shows how to solve both exponential and logarithmic problems.
Curated OER
Tex2html Wrap Inline185
With a bit of a misleading title, this lesson shows how to solve both exponential and logarithmic problems.
Curated OER
Tex2html Wrap Inline187
With a bit of a misleading title, this lesson shows how to solve both exponential and logarithmic problems.
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