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.

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

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

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 activity, you'll identify ways to prevent and address sexual harassment.

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 examine the format of an IP address and interpret the octet by converting between decimal and binary numbers.

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.

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

In this learning activity you'll review how a local area network computer uses a subnet mask to determine if its message is intended for a computer on the same network or on a remote network.

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.

Explore how to prevent injuries caused by falling from ladders or elevated heights by looking at the parts of a ladder, ladder safety rules, and personal fall protection systems.

In this interactive object, learners read a description of value-added and non-value-added activities and then place various work duties into these two categories.

In this learning activity you'll read key words that direct you to add, subtract, multiply, or divide.

Learners will identify ladder logic diagrams and the logic functions they perform.

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 review the fundamental laws of algebra including the commutative law of addition, the commutative law of multiplication, the associative law of addition, the associative law of multiplication, and the distributive law. Examples are given.

Learners study the operation of a ladder circuit in which coils on one rung control contacts in other rungs.

Users study a chart containing numbers 1 to 99 and look for trivial palindromes as well as double and triple iteration palindromes. The reverse and add technique is demonstrated.

In this animated object, learners study the operation of a ladder circuit that controls the rotational direction of a DC motor.