All teachers are expected to teach from bell to bell. The bells are not working so synchronize your watch with the school clock.
Make sure you go into the halls a few minutes early. We want to keep kids moving, halls clear.
Before you begin teaching, make sure you pass around a garbage can and get the kids to pick up all paper on the floor.
Again, teach from bell to bell.
If the kids in your period one class are getting to school late, figure out a way to fix the problem.