Set up a "homework options" chart. Maybe put a weekday at the top of each column, allow them to choose from that column. Staple to the top of all completed hw on Friday, with their choice for each night colored in/signed.
Atlanta Falcons quarterback Matt Ryan warms up before the Thursday night game with the New Orleans Saints at the Mercedes-Benz Superdome in New Orleans October 15, 2015. Photo by AJ Sisco/UPI | - Falcons' Matt Ryan must take better care of ball - UPI.com