Sagot :
Every science fair project must include a logbook, also sometimes called a research notebook, which is a complete, permanent record of how you did your experiment/research project; it shows what you did and thought every step along the way.
Purpose and importance of using the logbook:
The logbook ensures all required information is recorded in a logical manner. The logbook keeps the information in one place including supporting documents. The logbook is a way to monitor the needs of children and to identify how best to care for them.