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

Read about the difference between the subject and object form of personal pronouns and test your knowledge in practice exercises.

The learner reads a description of what it means to listen respectively. He or she then writes a brief action plan for becoming a better listener.

Learners identify the parts of speech by following a certain order until each word in a sentence is labeled. In a variety of exercises, learners practice finding verbs, prepositional phrases, subjects, nouns, pronouns, adjectives, adverbs, and conjunctions.

In this interactive lesson, learners study examples of nouns that can be counted and nouns that cannot. They then identify whether a word is a "count" or a "noncount" noun in a practice exercise.

In this interactive object, learners read how to use the indefinite articles "a" and "an" with singular count nouns. They omit these articles with noncount and plural nouns. The students then practice using "a" and "an" correctly.

Learners read about the different uses of the word "data." They will test themselves on examples of data that is singular, plural, qualitative, quantitative, nominal, ordinal, interval, rational, discrete, or continuous.

Make your snake longer by finding the correct form of the given noun.

Forming singular nouns to plural nouns

Race to the beehive by finding the correct plural words.

Choose the correct answer to complete the sentences.