While any kind of exposure can help a child learn a language, face-to-face instruction is by far the most effective method, and should serve as the basis for instruction. Learning a language is a dynamic process, and children (and adults) learn best when they can watch a speaker's mouth, see her expressions and movements and then mimic all aspects of communication. Meanwhile, face-to-face instruction enables the teacher to respond to the learner; Lango teachers are great at picking out which parts of the learning experience work best for your child!