Voice training singing instruction and song rehearsal in children's and school choirs

Music education takes place in every school. If there is a school choir teachers may be faced with a new challenge. Teachers may also ask themselves what options are available for gently transitioning from singing in unison to singing in harmony. What methods are suitable for this and how can an unfamiliar song be learned as easily as possible? However this work will not only focus on working on songs in the school choir. On the one hand it will also clarify how voice training and singing instruction can be carried out in the school choir and on the other hand it will address not only the school choir but also the children's choir. Are there major differences between a school choir and a children's choir or do choir rehearsals follow similar patterns? What criteria should be used to structure a choir rehearsal? What aspects are important when planning a rehearsal?