Learning disability

In a 3-page paper, written in APA format using proper spelling/grammar, research the topic of learning disabilities of American children and address the following:

1. When is a child's communication considered delayed? Please include stages of development regarding communication with examples.
2. What are speech disorders and how are they characterized?
3. What are language disorders? How does they affect language development and education?
4. How does a speech language pathologist help children with communication disorders? Explain with specific techniques and examples.