Science Buddies

This website explains how to make a display board including the layout, font sizes, readability, and materials needed. It also includes some examples and even a checklist to ensure you've made a great display.

Science Fair for Students: How To Do a Science Fair Display Board

This video provides more details on designing your display board. It is very direct and basic. 

Science Project - 10: Create a Display and Practice a Presentation

The first half of this video goes over the basics on creating a display board.  The second half discusses presentations, which you are not required to do for this assignment.

Canva

Canva is a great website for creating. You can use Canva for creating titles or adding interesting details to your display board. It can also be used to make charts and graphs.