You can also use the flat side of your saw to draw a straight line.
Most miter boxes will have slits that are at different angles in case you need to cut your wood on an angle.
Feather boards have a series of wooden “fingers” that help prevent kickback from your table saw.
Use a level to make sure that the plank of wood is straight.
If you are using a circular saw use a fine-tooth blade.
The plywood will now be the same width as your circular saw’s shoe.