Getting Order Number Into Query Grouped By Something

I have a table of transaction that includes student ids and dates. I need to select all records from the table and include a new value that is the sequential transaction numbered for each student with the oldest transaction for each student being numbered one, the next oldest numbered two and so on. So the result should look like student1, 10/1/2000, 1, student1, 10/15/2000, 2, student1, 2/12/2001, 3, student2, 9/1/1999, 1, student2 10/2/2000, 2, student2 , 12/15/2000, 3, student2, 11/4/2001, 4 and so on.