Learners solve word problems involving basic mechanical principles such as torque, horsepower, work, and power. Students who have problems with a particular word problem may try it again with a different set of numbers.

Learners study the descriptions of the three words in a PLC timer: EN, DN, and TT. They then test their knowledge in a brief quiz.

In this animated object, learners follow the steps for solving word problems using algebra. An introductory example is explained.

Learners click on the root word of a medical term in the left-hand column and drag it to its definition in the right-hand column. There is a time limit, so students will need to train themselves to recognize these root words quickly. Students may repeat the activity as often as they wish. A total of 74 terms are given in random order.

Learners test their spelling ability by identifying misspelled words from lists of words commonly used in business.

In this learning activity you'll read and listen to English words from the French language.

In this learning activity you'll discover transitional words to help you write an effective GED/HSED essay.

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

In this animated and interactive object, learners use an algebraic formula to solve a problem involving distance, rate, and time.

In this animated object, learners use an algebraic formula to solve the following problem: An airplane travels a certain distance with the wind in the same amount of time that it takes to travel a shorter distance against the wind. Given a constant wind speed, what is the speed of the plane without a wind?

The student reviews definitions of coarse/course and completes a practice exercise.

The student reviews definitions of stationary/stationery and completes a practice exercise.

Learners listen to five statements and then enter comments about each message’s tone, inflection, and pauses. This activity has audio content.

The student reviews definitions of principle/principal and completes a practice exercise.

The student reviews definitions of all ready/already and completes a practice exercise.

Students read about how to make the plural form of nouns that end with "f" or "fe." They then complete an exercise.

The student reviews definitions of their/there/they're and completes a practice exercise. The print and email function at the end has been disabled.

The student reviews definitions of may be/maybe and completes a practice exercise.

Students read a brief explanation and then complete an exercise writing plurals.

Students read about how to make the plural form of nouns that end in "y." They then complete an exercise.