I am currently helping my advisees (undergraduate math majors) plan their summer. As the obvious option, they've already applied to lots of REUs (some have gotten in and others not heard a positive response yet), but of course REUs can be very competitive to get and it would be nice to have other options I could suggest. Any recommendations? As background on the students, they are serious and high-achieving sophomores with an interest in pursuing graduate studies. Ours is an applied math program at a smaller polytechnic, and the students have some research experience. The program wouldn't necessarily have to be research-based, though - just something mathematical that they could learn and advance from and further their careers.
Thanks for any and all thoughts/suggestions!