HI student @546_student , Merry Christmas!
I’d start with a Plane, cut some Loop Cuts, Bevel them and Delete the newly created Faces and use a Boolean Intersect with a Cylinder. Then give it some thickness:

You can also start with a Circle (Filled with an NGon) and connect ‘opposite’ Verrtices, where you want the cuts, with J and the, Bevel those cuts and Delete the Faces. Then add thickness. This will give you planks of varying width.