Here are free Market Day product/goods and service ideas to use in a Market Day project-based learning unit for 3rd, 4th, or 5th grade! This free resource includes an Informational Flyer, Family Letter explaining the specifics of the project, and digital/editable templates of both of these files. Here's what's included:Printable Market Day Family Letter (describing the project, and collecting materials) Printable Market Day Informational Flyer (for students, parents, staff, etc.)Market Day Produ