The questions can be either speculative questions or more technical questions. You are encouraged to cooperate with each other in working on anything in the course, but what you put in your journal should be you. If it is something that has emerged from work with other people, write down who you have worked with. Ideas that come from other people should be given proper attribution. If you have referred to sources other than the texts for the course, cite them.
Exposition is important.
If you are presenting the solution to a problem, explain what the problem is. If you are giving an argument, explain what the point is before you launch into it. What you should aim for is something that could communicate to a friend or a colleague a coherent idea of what you have been thinking and doing in the course. Your journal should be kept on loose leaf paper. Journals will be collected every few days and read and commented upon by the instructors.