Dolch Word List: A flash-card type vocabulary list of 220 common words.
Fake Out: Choose a word and try to guess its definition. Words grouped by age and ability levels.
iVocabulary.com: Offers tests to build students' vocabularies, as practice for the SAT, or for ESL students. Difficulty increases with each correct answer.
Learning Vocabulary Can Be Fun: Hangman, matching, word search, and vocabulary trivia to help students learn vocabulary.
SAT Preparation: Provides fill-in and definition quizzes to prepare for the vocabulary portion of the SAT. Includes database of questions from the practice test.
Spatial Concepts: Uses colorful images to define spatial concepts such as over and under, between, and big and little.
StudyBeans: Vocabulary: Contains flashcards and quizzes.
ThinkQuest: Winning With Words: A choose your own sea-faring adventure story with links to a glossary.
Vocab Test.com: A series of interactive tests designed to help students learn standard SAT words.
Vocabulary Drill for Kids: Uses one less familiar word in a sentence, then provides three possible definitions. Kids use sentence context to choose the correct meaning.
Vocabulary Quiz: Match SAT words with their definitions.
Vocabulary Vulcanizer: Teaches "word parts" to help users decode meanings and build vocabulary.
Vocabulary.com- Level One Puzzle: Interactive games suitable for fourth through eighth graders.
What's the Word: Online game to learn reading and expand vocabulary. From Funbrain.com.
Word Traps: Provides an alphabetical list of words which are often misused. Includes definition and corrected usage.