1. How many times do you do activities and play games in class?

2. I have to finish the parts of the textbook, so I sometimes skip having students do an activity and play a game.
3-1. It is not difficult for them to memorize one or two subject names.
3-2 It is not difficult for them to memorize one or two subjects.

Would you correct any errors in the sentences above? Which expression do I have to use, #3-1 or #3-2?

In this sentence, you should change "and" to "or."

2. I have to finish the parts of the textbook, so I sometimes skip having students do an activity and play a game.

I'm not sure what the intent is in # 3, because I don't know what you mean by "subject." Please clarify.

Thank you..... subject names such as math, science, technical arts, chinese letters, or technical arts and homemaking. Some subject names are difficult to memorize for foreign students... Can you think of the context?

Thanks for the explanation. Your answer should be 3-1 -- memorize subject names.

1. To determine how many times you do activities and play games in class, you would need to keep track of the number of times you engage in these activities. This can be done by maintaining a record or using a schedule to plan and track class activities.

2. It's understandable to sometimes skip activities and games to prioritize finishing parts of the textbook. However, it is important to strike a balance between instructional content and engaging activities, as they can enhance learning and make the class more enjoyable for students.

In terms of correcting the sentences:
3-1. It is not difficult for them to memorize one or two subject names.
3-2. It is not difficult for them to memorize one or two subjects.

Both #3-1 and #3-2 are grammatically correct, but the choice depends on the specific context and what you intend to convey.

If you are referring to the actual names or labels of one or two subjects, then use #3-1: "subject names."

If you are referring to the concepts or content of one or two subjects, then use #3-2: "subjects."

For example:
- If you are talking about memorizing the names of specific subjects like "Math" or "Science," then use #3-1: "subject names."
- If you are talking about mastering or understanding the content of those subjects, then use #3-2: "subjects."