Do you remember your favorite teacher? CNN's Ali Velshi speaks with the 2011 Teacher of the Year, Michelle Shearer, a chemistry teacher from Urbana High School in Frederick County, Maryland. She was honored on Tuesday by President Obama at the White House along with state winners of the annual contest. Shearer is a 14-year teaching veteran who teaches chemistry at Urbana High School. She used to teach at the Maryland School for the Deaf. She was chosen for her passion for teaching and her ability to reach students, including many who have traditionally been underrepresented in the sciences, including minority students and those with special needs.