Imagine a family in Brooklyn whose young child has tried a few language apps and lost interest within weeks each time. The parents are not sure anything will feel different.
With young children, it has to feel like play, not school. A tutor who works with this age group could build sessions around songs, games and stories, so the child looks forward to them instead of being told to sit down for a lesson.
For a family like this, the best sign is simple: the child asks for more. A grandparent who speaks Spanish might even find a new way to share the language at home.