"Let's Talk Developing Baby's First 100 Words" helps parents guide children in developing their vocabulary for the most common 100 words babies first speak. In this fourth book of my "Developing Baby's First 100 Words" series, together we will teach your children the words most used by infants in their first few months of speech. These include common color, shapes, and other descriptive words like red, blue, circle, triangle, hot, soft and little.