In this installment of Mega Truck Alphabet, we'll learn our ABCs and the letter "d" as we take a trip to the desert in a big dump truck! This video for preschool children will focus on the capital and lower case letter "d" using the words desert, dump truck, dog, dune, dinosaur, doll, and the name Daisy. Be on the look-out for some surprise items that start with with "d" too!