Why don't I see a 'Check Answer' button on my panels in my Lt Lesson?

Before your panels will show a 'Check Answer' button, you need to author your answer.
In panel editing mode, click 'Set Answer' and provide the correct answer and other feedback you would like your students to have access to:
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This could be; explaining why a wrong answer is incorrect, further explaining the question requirements, things to think about when answering, and more. Once you’ve added your answer, the 'Check Answer' button will automatically appear.
Enter into PREVIEW mode to view what your students will see and try out the question for yourself.