Each group of students should have a checklist of their tasks. Tasks should include all graded elements. Examples are "Use at least 10 new vocabulary words" and "Use at least five different tenses." Have a space for student to fill in their own checklist objectives, such as speaking to each other only in Spanish while they create the project, or spending a certain number of minutes per night preparing.
Teacher checklists help instructors to stay organized and uniformly assess projects once turned in. Make the assessment checklist look like the student's checklist, with goals for new vocabulary and multiple tenses, so that everyone is working toward the same goals. For your own personal checklist, include items such as the distribution of student checklists, distribution of a written assignment sheet to the class, and individual meetings with groups or students.
Teachers may wish to involve parents in the process as well, particularly for younger students. Send home a checklist with items on it such as helping the child to create a group meeting schedule with his peers, volunteering to assist with technical equipment for movie or Internet based projects and engaging the child in at least five minutes of Spanish conversation per night to help improve language skills.
Have the students help you to brainstorm a list of guidelines for the project, or make the list yourself. Write the checklist on a big piece of poster board to display in the front of the classroom for the duration of the project. This technique works equally well for individual projects, group projects, and whole class projects.