How children learn a second language through stories
Children do not learn a language by learning words. They learn it by understanding a story the words happen to live in.
That is what a picture book does and a word list cannot. It gives the words a reason to exist.
Why a story sticks and a list does not
When a child hears the word "teddy" at the moment the teddy falls out of the backpack and is left on a bench, the word arrives together with a picture, a bit of tension and a consequence. That kind of memory lasts for days.
The same word, tenth in a list of twenty, lasts until the end of the list. There is nothing for it to hold on to.
The repetition children ask for themselves
A three-year-old will ask for the same story ten nights running. That is not a lack of imagination, it is a method. Each reading spends less attention on the plot, which leaves more for the language.
So it is better to let a child pick the same story again than to offer a new one every evening.
Listening comes long before speaking
Most children go through a silent period. They understand more and more and say nothing at all. It can last for weeks and it is entirely normal.
The worst thing to do in that period is to ask the child to repeat a word in front of other people. Pressure puts out the willingness faster than any method builds vocabulary.
How much time a day
Ten to fifteen minutes every day is worth more than an hour on Saturday. A language is kept up by frequency, not by duration.
Skipping a day costs nothing. Skipping a month means starting again from close to the beginning.
When the child cannot read the script
Chinese, Japanese, Korean and Ukrainian use scripts a beginner cannot follow. A Latin transcription under the word solves it, because the child sees how the word sounds at the moment of hearing it.
Without that the child listens but has no way to connect the sound to what is on the page.
Kiara is a storybook app in 14 languages, with audio narration and tap-to-hear words. The first story is free.