Teaching might be and should be fun but at times it not just gets tedious but can also be extremely tiring and hectic which might not leave teachers with all the time that they might want to search for additional materials for their students so as to make learning fun, interactive, responsive as well as useful.
One of the many websites that offer some extras on the material that is taught to students in the elementary level is Goedonline.com which helps the teacher gather additional information on the subjects they teach.
Some of the other websites are fuelthebrain.com, funbrain.com, teachertube.com, and various other that should be known by the teachers so as to help them gather information as well as make it easy and effective.