Browse Interactives

Comparing Fractions: Bubble Gum Blowing Contest

Explore equivalent fractions, and decide which of two classrooms is better at blowing bubble gum.

Discipline: Algebra/Trig/Calculus, Mathematics
Audience: Student

Comparing Representations

Statistical analysis allows us to organize data in different ways to draw out potential patterns in the variation. Review and compare data represented in a bar graph and accompanying tables depicting relative and cumulative frequency.

Discipline: Data, Mathematics
Audience: Student

Comparing Slopes

Control the slope of lines passing through the origin (0, 0). Keep track of what changes when the slope becomes positive or negative, and when slope is larger or smaller than 1.

Discipline: Algebra/Trig/Calculus, Mathematics
Audience: Student

Conflict

Learn about a story's conflict, and then identify the character who is describing the conflict of "Cinderella."

Discipline: Fiction, Literature, Reading
Audience: Student

Congruent Shapes

Find shapes that are congruent. Verify that they are congruent by making rotations, slides, and reflections.

Discipline: Geometry, Mathematics
Audience: Student

Connecting Themes and Disciplines

Connect themes and content to teaching strategies and activities. Practice developing lesson ideas by listing new concepts you would teach and activities you would use to teach them.

Discipline: Social Studies and History, Social Studies Instruction
Audience: Teacher

Constant Area

Do figures with the same area have the same perimeter? Arrange and rearrange 12 square tiles on a grid, and then measure the perimeter of each shape you create.

Discipline: Geometry, Mathematics, Measurement
Audience: Student

Constructing Quadrilaterals

Use a "linkage strip" to to build quadrilaterals with different sets of lengths. Once you build a quadrilateral, see if you can deform it into a different quadrilateral with the same side lengths.

Discipline: Geometry, Mathematics
Audience: Student

Constructing Triangles

Use a "linkage strip" to build triangles with different side lengths. When you build a triangle, see if you can deform it into a different triangle while keeping the side lengths the same.

Discipline: Geometry, Mathematics
Audience: Student

Continents Over Time

You have two minutes to correctly arrange five images showing the positions of the continents during different geologic periods. Can you do it?

Discipline: Area Studies/Geography, Geography, Geology, Science, Social Studies and History
Audience: Student

Control a Haber-Bosch Ammonia Plant

Learn about the economics of operating a chemical factory as you try to optimize the process of a simulated Haber-Bosch process ammonia fertilizer plant. Try to maximize profitability by using your knowledge of chemistry to fine-tune the reaction: adjusting temperature and pressure in the reaction chamber, switching the type of catalyst, and adjusting the rate that the product (ammonia) and impurities are removed.

Discipline: Chemistry, Economics, Environmental Science, Science, Social Studies and History
Audience: Student

Control the U.S. Debt!

Neither the president nor Congress appears to be near a solution on how to control the U.S. debt. Use this exercise to show them how to do it.

Discipline: Economics, Government, Political Science, Social Studies and History
Audience: Student

Convergent Boundaries - Colliding Plates

What are convergent boundaries? Examine how collisions of oceanic and continental plates can create volcanoes, island arcs and earthquakes.

Discipline: Earth Sciences, Geology, Science
Audience: Student

Converting English Mass Units

Practice converting mass from one British unit to another. Use your calculator if you need to.

Discipline: Mathematics, Measurement
Audience: Student

Converting English Lengths

Practice converting lengths from one British unit to another. Use your calculator if you need to.

Discipline: Mathematics, Measurement
Audience: Student

Converting English Volumes

Practice converting volume from one British unit to another. Use your calculator if you need to.

Discipline: Mathematics, Measurement
Audience: Student

Converting Fahrenheit to Celsius

Practice converting temperatures from Fahrenheit to Celsius. Feel free to consult the conversion chart and use your calculator if you need to.

Discipline: Mathematics, Measurement
Audience: Student

Converting Metric Lengths

Practice converting lengths from one metric unit to another. Use your calculator if you need to.

Discipline: Mathematics, Measurement
Audience: Student

Converting Metric Lengths into English Lengths

Practice converting metric lengths into British lengths. Feel free to consult the conversion chart and use your calculator if you need to.

Discipline: Mathematics, Measurement
Audience: Student

Converting Metric Mass Units

Practice converting mass from one metric unit to another. Use your calculator if you need to.

Discipline: Mathematics, Measurement
Audience: Student