Hebrew Slide has two modes. In Review Mode, you use the slider to change from one consonant to the next. Tapping on the letter reveals the basic vowels that are allowed for that consonant.
In Quiz Mode, you have a limited amount of time to identify the letters as they are spoken. Many Hebrew letters look similar, so Hebrew Slide will identify which lookalike pairs you need to review. After the quiz, you can send a report to your teacher.