Explore what DDoS attacks are, the methods used to carry them out, and how to prevent them.

In this learning activity you'll practice converting between degree minute second and decimal degree.

Students view the steps to follow to add complex numbers in Excel.

In this animated object, learners examine the design of a ladder circuit that provides manual control to a water pumping system. Students also study modifications to the circuit as the complexity of the system increases.

Learners examine how a ladder logic circuit becomes latched when a normally open pushbutton is momentarily pressed.

In this learning activity you'll analyze the structures of Buddhism and identifies the countries with the largest Buddhist populations.

In this animated learning object, students examine the addresses of PLC elements and how they pertain to I/O connections and internal memory files.

In this learning activity you'll identify Man-in-the-middle attacks and discuss how they affect network security.

Learners follow step-by-step instructions for finding the lowest common denominator for a group of algebraic fractions and then enter their answers to three problems. Immediate feedback is provided. This activity has audio content.

In this learning activity you'll examine the format of an IP address and interpret the octet by converting between decimal and binary numbers.

In this learning activity you'll solve three binary subtraction problems using the 2's complement method.

In this learning activity you'll examine how network address translation works.

In this animated object, learners follow an analogy of water flowing through pipes and valves to see how resistance decreases in a parallel circuit as branches are added.

In this learning activity you'll analyze the costs of rent-to-own buying plans and compare those plans to other consumer strategies.

In this interactive object, learners follow step-by-step instructions for reducing algebraic fractions, which contain addition and/or subtraction, to their simplest form. This activity has audio content.

In a series of practice problems, learners use the addition or subtraction method to solve systems of linear equations, also called "simultaneous linear equations."

In this learning activity, you’ll explore the Data Definition Language (DDL) including its three main commands: CREATE, ALTER, and DROP.

Students locate the countries of Turkey, Syria, Lebanon, Israel, and Jordan on a map in this interactive learning object.

In this animated object, learners follow an analogy of water flowing through pipes and valves to see how current increases in a parallel circuit as branches are added.

Learners follow steps to add fractions with different denominators. They also review fraction concepts, do a drag-and-drop exercise involving fraction terms, and add fractions with common denominators.