Most ESL EFL classes are based on a textbook of some kind. Many teachers find, however, that these books don't give enough depth into special areas such as pronunciation and idiomatic language. Another problem with some textbooks is a lack of variety. In this case, activity books come in handy to spice up what might otherwise be a dull lesson.

Teacher Resource Books for Adult ESL / EFL Learners
As any ESL teacher knows, having a grab bag of enjoyable learning activities helps to liven up any ESL class. These activities are useful for teaching inductively, filling gaps and introducing topics. Here is a list of five books that are sure to help you times of need.

• Top 5 Adult Resource Books

Resource Books for K - 12 ESL Learners
The range of language skills that young ESL learners need to acquire goes from basic speaking skills to the ability to express themselves in writing. These books focus on providing young ESL learners with all the skills they will need to succeed at school in an English speaking environment. They also young learners improve their English through a variety of fun and meaningful activities.

• Top 5 K- 12 Resource Books

North American English Pronunciation Help Books and Cassettes
Correct pronunciation can make all the difference when living in an English speaking country. This is especially true in the USA where the vast majority of citizens are not used to anything but standard US English. These books and cassettes will help you develop standard American pronunciation.

• Top 5 North American Pronunciation Help Products

Resource Books for American Idioms and Slang
One of the most frustrating aspects of learning a language is learning the idiomatic phrases, slang and common usage of native speakers. These five books focus on giving students a hand when learning North American idiomatic language. Some are reference guides, while others provide exercises to which can be used in the class or for self-study.

• Top 5 American English Idiom and Slang Resources