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Quadratics: Vertex Form - Explore Math

Grades
11 to 12
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This activity, designed for advanced math classes such as 11-12 grade calculus, allows students to visualize the graph of a quadratic in vertex form. Students calculate vertex and...more
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This activity, designed for advanced math classes such as 11-12 grade calculus, allows students to visualize the graph of a quadratic in vertex form. Students calculate vertex and y-intercept locations, and can also visualize the relationship between the vertex and the polynomial forms.

tag(s): quadratics (27)

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Quadratics: Polynomial Form - Explore Math

Grades
11 to 12
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This activity, designed for advanced math classes such as 11-12 grade calculus, provides a graphical representation of a quadratic in polynomial form. Students can change a, b, and...more
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This activity, designed for advanced math classes such as 11-12 grade calculus, provides a graphical representation of a quadratic in polynomial form. Students can change a, b, and c, and visualize the related changes in the graph.

tag(s): polynomials (21)

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Quadratic Inequalities - Explore Math

Grades
11 to 12
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This activity, designed for advanced math classes such as 11-12 grade calculus, provides students with a visual representation of quadratic inequalities in polynomial form. This is...more
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This activity, designed for advanced math classes such as 11-12 grade calculus, provides students with a visual representation of quadratic inequalities in polynomial form. This is a good hands-on activity that allows students to manipulate the solution sets and see the related changes on a graph.

tag(s): inequalities (27), polynomials (21)

In the Classroom

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Points in the Complex Plane - Explore Math

Grades
11 to 12
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This activity, designed for advanced math classes such as 11-12 grade introductory calculus, allows students to visualize the graphical representation of complex numbers. This is a...more
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This activity, designed for advanced math classes such as 11-12 grade introductory calculus, allows students to visualize the graphical representation of complex numbers. This is a good hands-on activity for the visual learner.

tag(s): numbers (121)

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Point-Form Slope of a Line - Explore Math

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7 to 10
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This activity, designed for lower level math classes such as 7-9 grade algebra, allows students to visualize the relationship between the point-slope form and the slope-intercept form...more
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This activity, designed for lower level math classes such as 7-9 grade algebra, allows students to visualize the relationship between the point-slope form and the slope-intercept form of a line. This is a good hands-on activity for the visual learner.

tag(s): charts and graphs (181)

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Parabolas - Explore Math

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11 to 12
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This activity, designed for higher level math classes such as 11-12 grade trigonometry, allows students to manipulate focus, directrix, and vertex, as well as visualize the string property,...more
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This activity, designed for higher level math classes such as 11-12 grade trigonometry, allows students to manipulate focus, directrix, and vertex, as well as visualize the string property, with parabolas. You must register for a free account to access this game.

tag(s): charts and graphs (181)

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Perimeter and Area of Rectangles - Explore Math

Grades
11 to 12
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This activity, designed for higher level math classes such as 11-12 grade trigonometry, demonstrates how changing the area of a rectangle affects the perimeter. This is a good hands-on...more
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This activity, designed for higher level math classes such as 11-12 grade trigonometry, demonstrates how changing the area of a rectangle affects the perimeter. This is a good hands-on activity for the visual learner.

tag(s): area (52), charts and graphs (181)

In the Classroom

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Logarithmic Functions: Translating and Scaling - Explore Math

Grades
11 to 12
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This activity, designed for higher level math classes such as 11-12 grade trigonometry, allows students to change the base of logarithms and visualize the corresponding exponential...more
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This activity, designed for higher level math classes such as 11-12 grade trigonometry, allows students to change the base of logarithms and visualize the corresponding exponential function.

tag(s): charts and graphs (181), equations (130)

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Least Squares Fit Line - Explore Math

Grades
11 to 12
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This activity, designed for advanced level math classes such as 11-12 grade introductory calculus, allows students to manipulate points on a graph and determine the least squares fit...more
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This activity, designed for advanced level math classes such as 11-12 grade introductory calculus, allows students to manipulate points on a graph and determine the least squares fit line for the data. This activity can also be used in a physics class.

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Hyperbolas - Explore Math

Grades
9 to 12
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This activity, designed for intermediate level math classes such as 10-11 grade geometry, allows students to manipulate vertices and foci, and visualize asymptotes and the string property...more
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This activity, designed for intermediate level math classes such as 10-11 grade geometry, allows students to manipulate vertices and foci, and visualize asymptotes and the string property with a hyperbola.

tag(s): charts and graphs (181)

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Ellipse - Explore Math

Grades
9 to 12
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This hands-on activity, designed for intermediate level math classes such as 10-11 grade geometry, allows students to change vertices and foci in an ellipse, visualize the string property,...more
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This hands-on activity, designed for intermediate level math classes such as 10-11 grade geometry, allows students to change vertices and foci in an ellipse, visualize the string property, and experiment with an ellipse.

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Points in a Complex Plane - Explore Learning

Grades
10 to 12
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This hands-on math activity, designed for advanced math classes such as 11th-12th-grade trigonometry, allows students to visualize numbers in polar form and their relationship to Cartesian...more
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This hands-on math activity, designed for advanced math classes such as 11th-12th-grade trigonometry, allows students to visualize numbers in polar form and their relationship to Cartesian coordinates.

tag(s): charts and graphs (181), numbers (121)

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Area Probability (Throw Darts!) - Explore Learning

Grades
7 to 11
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This math activity, designed for lower level math classes such as 8-10 grade upper algebra, allows students to manipulate the area of a circle and a rectangle to determine probability....more
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This math activity, designed for lower level math classes such as 8-10 grade upper algebra, allows students to manipulate the area of a circle and a rectangle to determine probability. This is a good hands-on activity that students will enjoy and will help them see the relationship between area and probability

tag(s): probability (129), statistics (127)

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Absolute Value of a Linear Function - Explore Learning

Grades
11 to 12
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This math activity, designed for advanced math classes such as 11-12 grade introductory calculus, allows students to compare various graphs in the slope-intercept form. This is a good...more
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This math activity, designed for advanced math classes such as 11-12 grade introductory calculus, allows students to compare various graphs in the slope-intercept form. This is a good hands-on activity that allows students to visualize absolute value.

tag(s): functions (59)

In the Classroom

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Fooble :: Perplexus - Animus Pactum Consulting

Grades
9 to 12
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Here's one that will tie your brain in knots. Some of these logic puzzles will challenge even advanced high school students, but both solutions and discussion are readily available...more
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Here's one that will tie your brain in knots. Some of these logic puzzles will challenge even advanced high school students, but both solutions and discussion are readily available for those who struggle. There are many different puzzle types, and new content seems to appear regularly. Note, however, that the ad banner space occasionally displays content that some might not deem appropriate for school use.

tag(s): logic (165), puzzles (167)

In the Classroom

Teachers will find this one a great source for "extra point stumpers."

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Teaching Math in America - Smithsonian Institution

Grades
6 to 12
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The Smithsonian's homage to math teachers of the past presents an interesting discussion of how "what's important" in math has changed along with the tools used to teach it. The ...more
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The Smithsonian's homage to math teachers of the past presents an interesting discussion of how "what's important" in math has changed along with the tools used to teach it. The resource collection contains a number of math sites that teachers might also find useful.

tag(s): design (76), teaching strategies (69)

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CensusScope

Grades
6 to 12
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Created by a university consortium, this site offers a wealth of graphs, charts, and data that students can use to analyze America's demographics. There are a number of prefabricated...more
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Created by a university consortium, this site offers a wealth of graphs, charts, and data that students can use to analyze America's demographics. There are a number of prefabricated analyses available, and there is also enough data to create exercises or activities that let students explore on their own. There are a number of possibilities for social studies, math, or statistics in this one.

tag(s): census (12), demographics (14), population (53)

In the Classroom

Share these visuals on your projector or interactive whiteboard. Have students investigate one area of this data and contribute to a class wiki. Not comfortable with wikis? Have no wiki worries - check out the TeachersFirst's Wiki Walk-Through.

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A View from the Back of the Envelope

Grades
6 to 12
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Have you ever struggled to give a student an example that demonstrates how big big can be, or how small small things are? Here's an eclectic collection of demonstrations and ...more
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Have you ever struggled to give a student an example that demonstrates how big big can be, or how small small things are? Here's an eclectic collection of demonstrations and jottings that let students compare both the vast and the minute.

tag(s): estimation (36), statistics (127)

In the Classroom

Use the content directly, or as an inspiration for your own comparisons.

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Planetarium: a puzzle-story in twelve weekly installments

Grades
7 to 12
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Here's an ongoing interactive puzzle that can really grow on you. A free registration lets users move through the puzzle one week at a time, discovering new clues with each ...more
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Here's an ongoing interactive puzzle that can really grow on you. A free registration lets users move through the puzzle one week at a time, discovering new clues with each visit and working with numbers and words to unlock the puzzle's secrets. This would be a great one for an ongoing activity that builds logic and higher order reasoning skills.

tag(s): logic (165), puzzles (167)

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Maths Dictionary - Jenny Eather

Grades
4 to 12
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This "down under" site is much more than a dictionary. There's a definition for each term listed, and most of the definitions include one or more illustrations of the concepts. ...more
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This "down under" site is much more than a dictionary. There's a definition for each term listed, and most of the definitions include one or more illustrations of the concepts. The definitions include the most basic math terms, as well as many more advanced words, making this a useful site for almost any grade level.

tag(s): spelling (91), vocabulary development (103)

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