In this animated and interactive lesson, learners examine additive and subtractive color theories.

In this screencast, learners read an explanation of the color code used on schematic diagrams for hydraulic circuits. Circuit examples for each color are shown.

In this interactive activity, students read about the colored stripes on a resistor and interpret the placement of those colors to determine the value of four-band resistors.

In this learning activity you'll build a resistor's color code based on the bands.

In this animated object, students examine the shades that result from mixing primary and secondary colors. Color tone and level are also defined.

In this interactive object, students complete progressively more difficult exercises as a way to improve their ability to recognize resistor color code values.

Learners examine the properties of a triangle and work practice problems to find a triangle's perimeter and area.

This interactive learning object is designed to help learners memorize the color code used on some hydraulic schematic diagrams. Learners quiz themselves using electronic flashcards.

In this animated and interactive object, learners use a color code to understand the operations of a hydraulic circuit. A brief quiz completes the activity.

In this learning activity you'll identify the sides of a right triangle with respect to the angles.

Students examine how to interpret resistor color code bands to determine resistance values and tolerance ranges. This interactive learning object has audio content and includes exercises.

In this animated object, learners pop balloons to see the medical term for a color or condition.

In this animated and interactive object, learners calculate the area and centroid of a triangle.

In this learning activity you'll apply the Pythagorean Theorem to isosceles and equilateral triangles.

Learners view animated scenes of problems caused when a lift truck is not operated properly. This object uses audio on some pages.

In this colorful, interactive object, learners examine how materials on the nanoscale compare with those on the macroscale. The focus is on the difference between macroscale and nanoscale gold in both color and melting point.

In this animated and interactive object, the learner uses a Casio fx-260 calculator to solve for the magnitude of the resultant and of one of the component forces in a right triangle.

In this animated and interactive object, the learner uses a TI-36X calculator to solve for the magnitude of the resultant and of one of the component forces in a right triangle.

In this learning activity you'll evaluate the Sine, Cosine, and Tangent ratios of a right triangle.

The student studies the method to calculate complex power where the Vrms of a circuit is multiplied by the complex conjugate of the total circuit current. Several examples are given, along with the power triangle.