https://www.coolmath-games.com/0-lemonade-stand

A fun game that I use to play when I was in 4th grade was lemonade stand! Its great for learning how to earn a profit while running a business.  Students have made it a fun competition, and have seen who can get the highest profit .  If anyone wants to check it out and compete against there kids, the link is above (warning they are pretty good, they have done a great job with this unit and have learned a lot!