Not only does sign language increase a preschooler's vocabulary, it makes important connections in the brain that will help your child learn to read! Here's an excerpt from an awesome article from education.com to tell you more:
Laura Berg, a certified teacher and founder of My Smart Hands--an agency that offers information and sign language classes for hearing toddlers and parents--explains that sign language helps to bridge the two hemispheres of the brain. This gives children two ways to access a word and its meaning. "Signing is different than learning spoken languages," notes Berg. "We take in language on the left side of our brain as a sound and we take in sign language on the right side of our brain as an image--something that spoken languages don't do." Additionally, she says, using sign with verbal language meets the needs of all different types of learners: auditory, visual and kinesthetic.Click here to read the rest of the article.