Look for ways to redesign your classroom. Let students redesign it as well. Plan team teaching activities with other teachers. Block time does not nnecessarily mean more common planning ing time. It also does not mean that curriuculum will be naturallly integrated.
Teachers make that happen.
Find a common concept and teach it with another teacher or guest. Look for a variety of ways to monitor feedback and assess student learning. Turn tests and quizzes into learning episodes. Teach students to become responsible for their own learning and for each other. Make them do the work.