A longtime favorite of children and adults, and a staple of PBS, Sesame Street bridges many cultural and educational gaps with a fun program. Big Bird leads a cast of characters teaching children numbers, colors and the alphabet. Bert and Ernie, Oscar the Grouch and Grover are just a few of the other creatures involved in this show, set on a city street full of valuable learning opportunities. The Cat in the Hat Knows a Lot About That! sparks a love of learning and an interest in science in preschool-aged children. Based on the best-selling books, the TV series and online resources are designed to cultivate positive views about science among the next generation.