A teacher is always needed to facilitate learning and growth. Technology is not infallible. It can malfunction, break, and where down. Teachers must be aware of how to handle these problems, and have back up plans ready in case a situation does occur. Remember that nothing is perfect.
Technology requires constant updating.
The tools get old and need to be replaced. Software changes daily, and teachers need to be updated on the new material. Technology has its limits, it is not perfect, and will never replace a teacher in the classroom. Educators and administrators need to be aware of its limitations so they do not hinder a child's education.