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Interactive
CK-12 Foundation

Percents as Decimals

For Students 6th - 8th Standards
In some cases, decimals are just easier to work with. An easy-to-use interactive shows how to convert percents to decimals. It then challenges learners to answer a set of questions, some of which include percents that are greater than...
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Interactive
CK-12 Foundation

Overview of Percents: Play Checkers

For Students 6th - 8th Standards
Bet classes didn't know playing checkers help with understanding percents. An interesting interactive has pupils consider a series of moves in checkers. It then requires them to answer a set of challenge questions on percentages...
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Interactive
CK-12 Foundation

Proportions and Scale: Problem Solving Plan, Proportions

For Students 6th - 8th Standards
Slide into a lesson on proportions. A slider interactive lets users adjust three of the four values in a proportion and automatically updates the fourth value. Scholars use the interactive to help answer a set of challenge questions on...
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Interactive
CK-12 Foundation

Proportions Using Cross-Multiplication: Proportions Using Cross Product

For Students 6th - 8th Standards
Don't get it crossed—the resource is a great one. Scholars read and watch a video that explains proportions and cross products. They then use an interactive to determine that cross products are equal and answer a set of challenge...
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Activity
Exploratorium

Making a Translation Tesselation

For Teachers 3rd - 5th
Make masterful art using math. An interesting activity has learners create artwork involving tesselations. First they cut out a base shape from index cards, then they apply translations to complete their masterpieces.
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Activity
Exploratorium

Traveling Networks

For Teachers 4th - 8th
Show your class the path to understanding graph theory. Scholars learn about basic graph theory using an activity based on the Bridges of Konigberg problem. They draw networks on the playground and decide whether it is possible to travel...
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Interactive
CK-12 Foundation

Evaluation of Square Roots

For Students 8th - 10th Standards
Think outside the box and use an engaging, interactive app that shows the relationship between square roots and squares using an actual square. Pupils find that moving a slider increases the side length of a square and its associated area.
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Interactive
CK-12 Foundation

Multiplication and Division of Radicals: Totally Radical Dude's Height

For Students 8th - 10th
Watch as your learners reach even loftier heights of understanding. Individuals use a slider to estimate the height of a person whose height is given in radical form. Rationalizing the denominator comes in handy here.
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Interactive
CK-12 Foundation

Simplification of Radical Expressions: Richter Scale Exponents

For Students 8th - 11th
Shake up your lessons with with a radical resource. Scholars use a slider to view the Richter scale magnitude and amplitude of historical earthquakes. They use powers of 10 to compare the amplitudes of different earthquakes.
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Interactive
CK-12 Foundation

Tangent Graphs: Slope and Angle

For Students 10th - 12th Standards
Learning about tangents doesn't have to be a slippery slope. Pupils drag a point around a unit circle to see how angle affects the slope of a line. They individually answer a set of challenge questions to come to the conclusion that...
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Interactive
CK-12 Foundation

Identify Accurate Drawings of Triangles: Law of Cosines

For Students 10th - 12th Standards
Drawing triangles is easy, even if you have to calculate the exact length of its sides. Scholars use the Law of Cosines to find missing sides of triangles. An interactive helps them check their answers.
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Interactive
CK-12 Foundation

Fundamental Trigonometric Identities: Tangent Identity

For Students 10th - 12th
An identity that thieves can't steal  the tangent identity. Scholars manipulate ratios to investigate the tangent ratio and connect it to the sine and cosine ratios. An interactive that uses color coding helps with this task.
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Interactive
CK-12 Foundation

Finding Exact Trigonometric Values Using Double Angle Identities: Trig Values Using Double and Half Angle Formulas

For Students 10th - 12th
The more you know, the more you can learn. Scholars apply the double angle and half angle formulas to determine trig values based on known values. They use an interactive that provides sine and cosine values to aid calculations.
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Interactive
CK-12 Foundation

Half Angle Formulas: Half-Angle Formulas

For Students 10th - 12th
Slide the resource into your lesson plans. Young mathematicians use a slider to move a movie screen to the right position for optimal viewing. Along the way, they learn to apply the half angle formulas.
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Interactive
CK-12 Foundation

Angle-Side-Angle Triangles: Caution Tape

For Students 10th - 12th Standards
Don't lose your marbles. Scholars use an interactive to create a triangle that closes off a portion of a sidewalk with loose marbles. The Law of Sines helps them find the side measures of such a triangle.
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Lesson Plan
Dick Blick Art Materials

Start with a Circle...

For Students K - 12th
The Golden Ratio. The Divine Proportion. Yup. It's math and art blended into one colorful activity. Young artists combine colored tissue paper circles and parts of circles to create geometric patterns. As a bonus, kids get to figure out...
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Lesson Plan
Curated OER

Define Geometry Terms

For Teachers 3rd - 5th Standards
The Common Core is intended to help all children meet high academic standards. Here is a Common Core designed lesson that is intended for learners with communication or language difficulties. The lesson is written in a narrative style...
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Lesson Plan
Virginia Department of Education

Lines and Angles

For Teachers 9th - 11th Standards
Explore angle relationships associated with transversals. Pupils construct parallel lines with a transversal and find the measures of the angles formed. They figure out how the different angles are related before constructing...
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Unit Plan
Curated OER

Transformations in the Coordinate Plane

For Teachers 9th - 12th Standards
Your learners connect the new concepts of transformations in the coordinate plane to their previous knowledge using the solid vocabulary development in this unit. Like a foreign language, mathematics has its own set of vocabulary terms...
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Handout
National Institute of Open Schooling

Chemical Bonding

For Students 7th - 12th Standards
Name is Bond, covalent bond. Through readings and answering questions, classes explore the different types of chemical bonds, their characteristics, valence shell electron pair repulsion theory, and atomic orbitals. 
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Lesson Plan
Virginia Department of Education

Circles in the Coordinate Plane

For Teachers 9th - 11th Standards
Make the connection between the distance formula and the equation of a circle. The teacher presents a lesson on how to use the distance formula to derive the equation of the circle. Pupils transform circles on the coordinate plane and...
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Lesson Plan
Teach Engineering

Discovering Relationships Between Side Length and Area

For Students 9th - 12th Standards
Consider the relationship between side length and area as an input-output function. Scholars create input-output tables for the area of squares to determine an equation in the first installment of a three-part unit. Ditto for the area of...
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Lesson Plan
Virginia Department of Education

What's the Point?

For Teachers 6th Standards
Point your class in the right direction in plotting points with three activities that give scholars a chance to learn about and practice plotting points on a coordinate plane. They draw figures on the coordinate plane and list out the...
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Lesson Plan
Virginia Department of Education

Side to Side

For Teachers 6th
Congruent figures: two figures that want to be just like each other. Individuals learn to distinguish between figures that are congruent and those that are not. Measuring the lengths of line segments and angles helps in this endeavor.

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