Locate the script supervisor or person in charge of the production and ask for a list of scenes that will be shot on that particular day.
Refer to the shooting script. Read the scene headings of the scenes that will be shot. Copy each scene heading to its own individual index card.
Prepare each index card. On the top half of the index card write the date, the production title, the director, and the director of photography. Draw a line directly under this data. Under the line include scene numbers, camera angle, take number, and camera letter.
Using the dry erase marker, transfer the information located on the index card onto the film slate, into the appropriate fields. Most film slates have designated fields labeled for information input. If a particular field is missing cut a small piece of masking tape to cover the fields title. Then write over the masking tape with the new label.
Thoroughly erase information from the film slate at the end of each take and update it accordingly.