Students have to write in a log every time they do not turn in their homework on time and explain themselves. This helps teachers keep track of how many times the same student does not do his/her homework, makes students think about why they did not do their homework, and establishes accountability.
Telling Time- stick a hula hoop to the white board, and write numbers around the inside of the circle to make a "clock". You can make little notches around the inside of the hula hoop to practice telling time to the exact minute, if you choose to, but I really like to use this to work with elapsed time.
A Noise Level Meter built to help control the noise level of groups of children. As the noise level in a classroom increases beyond an acceptable level the noise level meter dynamically indicates the level of noise, and the background graphics within the app change to reflect the noise levels. Free!
CREATIVE Classroom. This is an art room, but I love many of the ideas here for a 7-12 ELA classroom. The clock with time flies wings is so amusing. I also love the idea of the "create" letters. Each class could be responsible for decorating the large letters on during the first week of school. Source: dolvinartknight.blogspot