Each unit generally includes a grammar presentation or reading text, with 3 or 4 interactive exercises, such as:
Multiple-Choice: Choose the correct answer for each question
Sentence Scramble: Form sentences by correctly putting words and phrases in order
Fill-in-the-Blanks: Complete the phrases by filling in the blanks
Short-answer Quiz: Type short answers for each question
Drag-and-Drop Matching: Drag the words on the right to their corresponding items on the left
Word Scramble: Put the letters in order to form words
Sequence Shuffle: Put the actions in the correct order
Storyboard: Guess the words to create a story

Some reading units come with a glossary.