For ESL---which stands for English as a Second Language---students, there are many different ways to complement their classroom learning with online activities. These activities can range from beginner level to challenging, and can consist of activities and games, as well as quizzes. It is important that students studying English as a second language practice constantly, as it is through practical application that one masters a new language.

Online Crossword Puzzles
For ESL students, a crossword puzzle is a great way not only to test their knowledge of a word's spelling, but also of its meaning. Activities for ESL Students, a website that provides activities to help students studying English, offers a variety of crossword puzzles that can be completed online. The website has crossword puzzles for a variety of levels, beginning with puzzles consisting of very common words and ending with puzzles all based on a certain topic with more challenging vocabulary.

Vocabulary Quizzes
One great way for an ESL student to test his or her knowledge is to take vocabulary quizzes online. Activities for ESL Students provides a variety of quizzes at each level to help ESL students study their material. Each vocabulary quiz has a different number of questions, as well as different topics. Some topics include abbreviations, adjectives often confused, analogies, baseball terms and mammals, among many other topics. These quizzes will help students studying English discover their strong points, and pinpoint areas that they need to continue to work on.

Online Games
For young ESL students, online games are not just a good opportunity to put English skills to practice, but they also are fun. ESL Kid Stuff is a website that has a variety of games available for students studying English. Games include an ABC game which requires the student to correctly place the alphabet in order, and a coloring game which allows the student to color a picture online while learning the English names of the colors.

Listen and Repeat Podcasts
Another important aspect of learning another language is being able to speak the new language. For ESL students who would like to study English online, there are podcasts available which allow them to listen to the spoken English language, and in turn repeat it. This helps them learn context and dialogue. It is recommended that students practice with these podcasts a few times each day. Podcasts can focus on a variety of aspects of the English language, including irregular verbs and adjectives to describe people.