Intended for kids ages 2-7, Kids ABC Trains invites preschool-aged children to learn and identify letters and their sounds (phonics) using trains and railroads as their tools. With Kids ABC Trains, your preschool-aged kids will learn each letter's name and sound, trace letter shapes, identify letters in context, and match lower to upper case letters.5. Engine Search. Children get to think fast on their feet as they match upper and lower case letters before the trains have time to move away. Phonics is reinforced by hearing the letter’s sound after they make the correct match.