Labeled diagram of the parts of a bird.

A labeled illustration showing the different parts of a suit of armor.

A labeled diagram of the main parts of the human brain.

Learn about different reference materials such as dictionaries, glossaries, and thesauri to help you learn meanings of words, pronunciation, or parts of speech. View a short lesson then practice using Game Mode or Test Mode.

This lesson explains how to determine the denotation of words; it defines denotation and offers a plan of action: look up the word in the dictionary, read all meanings paying attention to parts of speech, and compare each of these...

The dictionary is part of a site that offers free online help to computer users. The index provides a complete listing of terms by first letter. For terms that begin with a number, select the # sign.

This article focuses on 7th-grade grammar which requires having a greater understanding of the grammar learned previously and using the parts together. This includes understanding the parts of speech, pronouns, clauses, and punctuation;...

This one page website provides a definition for denominator and numerator. It also give examples.

This is the Japanese version of the well-known Interesting Things for ESL site (the authors are professors teaching in Japan). The Japanese site has many of the same features as the English Only version in fact, it usually goes to the...

Labeled illustration of the principal parts of a column's base.

A labeled diagram of the parts of a fish.

A dictionary is one of the most useful reference books anybody could ever use. Learn how to properly understand a dictionary's formatting and content! [0:46]

Labled diagram of a seedling's parts.

Labeled illustration of a plant and an animal cell and their parts.

A dictionary is not the only way to figure out the meaning of new words. Readers also can look for familiar word parts. These word parts might appear in other words that readers already know. By looking for familiar word parts, including...

Illustrated dictionary entry for Greek Goddess Muses. Describes the symbols associated with her.

A definition of thermodynamics and its laws from the Web Dictionary of Cybernetics and Systems. Part of an online dictionary of scientific terms. Includes hypertext links to other definitions are provided.

Labeled illustration of a male duck and its body parts, including its primary and secondary feathers.

Illustration of the head of a poisonous snake, with callouts for its fangs, venom gland, and other parts.

Werner Erhard's EST, the Erhard Seminar Training is part of the human potential movement and is an an example of what psychologists call a "large group awareness training program."

In this slideshow tutorial lesson, students are encouraged to never completely skip an unknown word. The strategies of using context around the word, sounding out the word, looking for familiar words parts, and getting a dictionary are...

Illustration of a snare drum, with its parts designated.

A dictionary of words used in Medieval England, many of which are no longer part of the modern, everyday English we speak. This collection of terms also includes words we use now. You can learn the Medieval definitions, and compare them...

A great variety of activities and resources for both teachers and students of Spanish. Includes a picture dictionary, information, coloring sheets, and short books to inspire vocabulary learning. Contains many fantastic resources for...