HEATKEYS

The largest and most trusted free online thesaurus. Quickly find accurate and up-to-date synonyms, antonyms, and related words at Thesaurus.com. Synonym dictionary, antonym dictionary, words synonyms.

The Free Online English Dictionary from Macmillan Publishers.

Grammar-quizzes for ESL and native English speakers contrasts points of grammar (contrastive analysis) and provides practices and interactive quizzes on: adjectives, adjective clauses, noun clauses, modals, gerunds, infinitives, participles, adverbs,...

LearnZillion offers free video lessons for grades 3-9 that align with the Common Core. Teachers can create playlists, track progress, and get additional resources.

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Pitch is a multi-faceted interactive and data visualization studio in Madison, Wisconsin focused on bridging the gap between form and function. We are fueled by passion,will and over a decade of experience.

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

Twenty sections of 225 study guides and exercises for learners, middle school through returning adult, in 32 languages.

HelpingWithMath.com provides free, printable resources for parents who want to help their children with math. There are worksheets, tables, charts, number lines, games, and more.