Innocent but sentenced to death

During the Shoah, over a million Jewish children were mercilessly murdered by the National Socialists and their accomplices. Their extermination was preceded by processes of marginalization, disenfranchisement and deportations to camps and ghettos under indescribable conditions. But what was everyday life like for children in the Jewish ghettos under German occupation, for example in the Warsaw ghetto? Who looked after them and what facilities were there?