Interactive
CK-12 Foundation

Unit Circle: Medieval Castle Defense

For Students 10th - 12th Standards
Who needs a plan — let trigonometry protect you! Pupils determine the angle of an approaching enemy to a village wall. The scholars determine the exact value of trigonometric functions for the angle. Class members use trigonometry to...
Interactive
CK-12 Foundation

Trigonometric Functions of Negative Angles

For Students 10th - 12th Standards
When is the trigonometric value of a negative angle the same as the positive angle? Pupils compare the values of trigonometric functions for different angles and their negatives. The interactive resource provides a visual display to make...
Interactive
CK-12 Foundation

Radian Measure: Unit Circle Conversions

For Students 10th - 12th
Individuals investigate the relationship between radian and angle measurements by using an interactive to find the angle measurement for given radian measures. Users answer questions to convert between the two measurements.
Interactive
CK-12 Foundation

Measuring Rotation: Aircraft Headings

For Students 9th - 12th Standards
Measure angles in more than one way. The interactive introduces the concept of measuring angles from 0 to 360 degrees. Scholars explore the relationships between the angle and reference angles along with coterminal angles.
Interactive
CK-12 Foundation

Angles of Rotation in Standards Positions: Clock Angles

For Students 9th - 12th Standards
Use a clock face to develop angles representing standard position angles. The interactive allows pupils to create angles using the hands of a clock. Scholars discover that there is a difference in the angle formed using a clock face and...
Interactive
CK-12 Foundation

Measurement of Probability: Basketball Throw

For Students 6th - 9th Standards
Future mathematicians use an interactive to see how changing the size of a basketball court and the size of a region in the court affects the probability that a ball will randomly fall within the specified region. No calculations are...
Interactive
Curated OER

The Articles of Confederation (1781-1789)

For Students 8th - 12th
In this online interactive history worksheet, learners respond to ten short answer and essay questions about the Articles of Confederation. They may check some of their answers on the interactive worksheet.
Interactive
CK-12 Foundation

Whole Number Exponents: Teddy Bear Box

For Students 3rd - 6th Standards
Five questions—multiple-choice, fill in the blank, and discussion—make up an interactive that challenges scholars to mail a teddy bear using the smallest box possible without squishing it. A box with movable sides allows mathematicians...
Interactive
CK-12 Foundation

Angle Measurement: Adding Angles

For Students 9th - 12th Standards
Build angles from angles. Using the Angle Addition Postulate, learners find the measures of unknown angles. The interactive simulation shows a visual representation of the postulate and allows individuals to manipulate the angles and...
Interactive
National Council of Teachers of Mathematics

Scale Factor

For Students 6th - 12th Standards
Does doubling mean everything doubles? Learners adjust the scale factor between two rectangles. Using the calculated measurements, pupils investigate the ratios between the lengths, perimeters, and areas of the rectangles.
Interactive
CK-12 Foundation

Six Trigonometric Functions and Radians: Degrees to Radians and Back Again!

For Students 10th - 12th Standards
How do degrees relate to radians? The interactive allows pupils to manipulate the size of an angle in a unit circle to help see that relationship. Users determine the radian measure for given degree measures of angles, realizing the...
Interactive
CK-12 Foundation

Conversion between Degrees and Radians: Arc and Radians Relationship

For Students 10th - 12th Standards
How are arc lengths and radians related? An interactive resource demonstrates the relationship as pupils create arc lengths in a unit circle and compare them to the angle measurements. Questions ask individuals to build upon this...
Interactive
Royal Society of Chemistry

Born-Haber Cycle: NaCl

For Students 9th - 12th Standards
Max Born and Fritz Haber developed the Born-Haber cycle in 1916, which is used for measuring enthalpy that otherwise couldn't be measured. Young scientists solve four matching puzzles using their knowledge of the stages, standard...
Interactive
Curated OER

Metric Measurement

For Students 5th - 10th
In this metric conversions worksheet, students convert units of measure to each other with meters, kilometers, grams, and more. Students complete 12 problems.
Interactive
Curated OER

Circle Problems - Radius, Diameter, Circumference and Area

For Students 9th - 12th
In this online math worksheet, students determine the radius, circumference, diameter and area of circles. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A...
Interactive
Curated OER

Reconstruction (1865–1877)

For Students 8th - 12th
In this online interactive history worksheet, students respond to 7 short answer and essay questions about the causes and effects of Reconstruction following the American Civil War.
Interactive
Curated OER

Ecological Dilemmas in Wetlands

For Students 7th - 8th
In this ecological dilemmas in wetlands activity, students select a topic, use  the links to websites for research, describe the topic, explain its impact on wetlands, identify alternatives and decide on possible...
Interactive
Curated OER

Sunspots and the Sun's Rotation

For Students 6th - 9th
In this sun worksheet, students use a Sunspotter to observe the rotation of the sun by identifying the presence of sunspots and watching them rotate over time. Students calculate how many days it takes to see the sunspots they observe in...
Interactive
Curated OER

Student Exploration: Building Topographic Maps

For Students 4th - 6th
In this earthquake exploration worksheet, students complete 2 prior knowledge questions, then use "Building Topographic Maps Gizmo" to conduct several activities, completing short answer questions when finished.
Interactive
Curated OER

Breaking News English: Death Penalty

For Students 7th - 12th
In this death penalty worksheet, students read the article, answer true and false questions, complete synonym matching, complete phrase matching, complete a gap fill, answer short answer questions, answer discussion questions, write, and...
Interactive
Mangahigh

Mangahigh: Shape: Change Between Metric Units of Measurement

For Students 9th - 10th Standards
Convert within the same units of measurement.
Interactive
Mangahigh

Mangahigh: Shape: Changing Between Metric and u.s. Customary Units

For Students 9th - 10th
Test your knowledge of converting between metric and U.S. customary units.