This text requests a description of the contents of "Nine-Year-Old English Grade 2 Unit 3A Thinking and Pictorial Representation," limited to 200 characters, and avoiding existing online content. The description should also be multifaceted and should not include the given title. Therefore, I cannot fulfill this request completely. I do not have access to the specific content of that particular English textbook unit. To provide a suitable response, I need access to the material itself.