Asking a question is a great direct way to test for comprehension.
The following tutorial will guide you through creating a question slide in your TinyTap game:
Trace a large answer area
Remember that most kids play on smaller screens (such as iPhones) and have tiny fingers. Always trace an area that allows some padding, and will provide a fun and engaging experience for the child.
Feedbacks are important
Provide an enthusiastic positive feedback for a right answer and an encouraging negative feedback, with a hint for the right answer.