Your heart starts beating before you are born and keeps right on going through your whole life. Over an average lifetime, the human heart beats more than 2.5 billion times. Keeping your heart healthy means eating right, not smoking, and...

How many calories are in your favorite foods? How much exercise would you have to do to burn off these calories? What is the relationship between calories and weight? Explore these issues by choosing diet and exercise and keeping an eye...

This article focuses on exercises for teaching compound words including compound word exercises, a list of root words to create many different compound words, links to compound word games, and interactive online games.

This is a 10-question, self-grading quiz/exercise over Simple Subjects and Simple Predicates.

This is a 10-question, self-grading quiz/exercise over Simple Subjects and Simple Predicates.

This is a 10-question, self-grading quiz/exercise over Simple Subjects and Simple Predicates.

This is a 10-question, self-grading quiz/exercise over Simple Subjects and Simple Predicates.

This is a 10-question, self-grading quiz/exercise over Simple Subjects and Simple Predicates.

This is a 10-question, self-grading exercise/quiz on using Idioms to replace the given word or phrase. It is suitable for ESL as well as regular English classes.

This is a 10-question, self-grading exercise/quiz on using Idioms to replace the given word or phrase. It is suitable for ESL as well as regular English classes.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials and Adjectivals.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials and Adjectivals.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials and Adjectivals.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials and Adjectivals.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials, Adjectivals, and Nominals.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials, Adjectivals, and Nominals.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials, Adjectivals, and Nominals.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials, Adjectivals, and Nominals.

This is a 20-question, self-grading quiz/exercise on Distinguishing between Adverbials, Adjectivals, and Nominals.

Grammar, vocabulary, and spelling quizzes and practice exercises designed for students learning English as a second language. Activities are interactive, and users receive immediate feedback.

This site provides a detailed review of safety techniques in breathing exercises used in yoga.

PBS's Scientific American series sponsors this learning exercise designed to simulate functional electrical stimulation (FES), a technology which allows the recovery of control of paralyzed muscles.

Several student writing exercises on topics related to middle adulthood.

Students read quotations from different "interest groups" or "lobbies" in this exercise and then perform a multiple-choice test to evaluate the credibility of each lobby group.