One of the most important parts of a science fair project is the logbook. The logbook should be a notebook with graph paper, and only the pages on the right should be used for normal writing and entries. Pages on the left should be saved for things such as diagrams, documents, and data tables. Pages on the right should also be numbered so that they can be added in the table of contents at the beginning of the book.
Keeping up with the logbook and filling in entries at the appropriate times are necessary; the logbook is graded through several content checks, and it is presented to judges along with the student's poster. Many students neglect to keep track of logbook entries, which often causes inaccuracy in entry dates, the inclusion of misinformation or a lack of information due to a student forgetting details that they would have remembered had they filled out entries at the correct time, and a lower grade in the class due to poor work quality. Students tend to underestimate the significance of logbooks, but they are often used in real research labs. This means that using a logbook is an important skill that will be of assistance for students interested in a career in science.