Final answer:
The question lacks specific context, making it impossible to ascertain the subject matter or grade level related to the afternoon session trainings in question.
Step-by-step explanation:
The question, "What do the afternoon session trainings involve?" does not provide enough context to determine the specific subject or grade level. Providing quality assistance would require additional information about what these afternoon session trainings are related to.
Are they sports practices, educational workshops, corporate training sessions, or something else entirely? The nature of the training sessions in question is crucial to providing an accurate and detailed answer.