There are many ways to organize subject journal. Here’s one way to separate a spiral notebook into sections, or a single notebook into two different subjects.
Here’s a sample of how you can format your page: anchor chart tab for math journal. You can type whatever you want on the tab. Print and cut into strips. Glue anchor chart/show my work tab in middle of spiral notebook math journal. When you are making an anchor chart with the class, have each student copy what you are doing into their journal. Or when you pass out math definitions, examples, charts, or whatever that you want students to glue in their journal for future reference, have them start writing and gluing at the beginning of the book. When the student is just showing work or writing different ways to write a number or story problems, etc., have them go to tab and then start that sort of work there. That way, your student has the more pertinent information in the front of the journal and it will be easier for students to use their journals as a reference.