A complete speaking model
To plan a weekly budget, first write down the money actually available, not money you hope to receive. Next, list necessary travel and school costs. Set aside a small reserve if possible, then decide what remains for optional spending. Here is a fictional example, not my private financial record: from 200,000 đồng, allow 80,000 for travel, 50,000 for school materials, 20,000 for a reserve and 50,000 for optional spending. The four amounts add up to the available total. Record purchases during the week. Finally, compare the record with the plan and adjust the next week. If an essential cost changes, reconsider optional spending rather than hide the difference. Do not share account details or passwords in a class display. The purpose is responsible planning, not a competition to spend the least.
Follow-up: What if travel costs rise?
Response: Revise the budget and seek appropriate advice before cutting essential travel or assuming extra money will appear.