Students test their skill at converting binary numbers to decimal numbers. Immediate feedback is provided.

Learners examine the occurrence of overflow and underflow conditions in a programmable logic controller. It is recommended that users view the learning object “Signed Binary Numbers” in advance of this object.

Learners follow steps to convert numbers from Gray code to binary code. They then view steps to change binary values to Gray code numbers.

Learners use this interactive and animated object to examine the use of binary numbers in a programmable logic controller. A brief quiz completes the activity.

Learners read definitions of atomic symbols, atomic numbers, and mass numbers and then answer questions about the number of neutrons, protons, and electrons in select elements.

Learners read about the most common forms of financial statements including balance sheets, cash flow statements, and profit and loss statements. A brief quiz completes the activity.

Learners explore the use of complex numbers through a series AC circuit analysis problem. The steps are compared to the graphical method of finding circuit impedance and the phase angle.

Learners assign oxidation numbers to atoms in neutral compounds and in polyatomic ions. Six examples are worked through in detail, and three problems are provided.

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

In this learning activity you'll examine two methods for converting a binary number to a decimal number.

Students read an explanation of "superposition" as a technique for ac circuit analysis. Complex numbers are used.

Students view a demonstration of the Current Divider Rule with the use of complex numbers. Examples are given.

Students read an explanation of the Voltage Divider Rule with complex numbers. Examples are given.

In this learning activity you'll explore what scientific notation is and how it's used to express very large and very small numbers.

Roman numerals are used to identify the charges on metal cations having multiple oxidation states. Five examples are provided for practice.

At the end of this lesson you will be able to

- Explain what biosecurity means.

- Describe why biosecurity is important.

- Identify what kinds of disease agents we try to prevent or control with biosecurity.

- Demonstrate disease agent-host-environmental interactions that result in disease.

In this learning activity you'll discover what the .NET Framework is, what problems it solves, and how it came to be.

Learn more about debugging including: what it is, why we use it, and what it looks like in action.

In this animated activity, learners examine the construction of a binary counter using a JK flip-flop. The ability of the JK flip-flop to "toggle" Q is also viewed.

Learners study an animation that shows how a battery charge reduces over time and when varying resistance values are placed in a series circuit. Ten review questions complete the activity.