This manual is a choral teaching method for children in the early grades of primary school (6-8 years old). A selection of songs has been made that corresponds to the vocal range and vocal capabilities of children of this age. This first volume is a comprehensive annual teaching method for children who are starting to sing for the first time in a children's or school choir or in group singing as part of the music lesson at school. The method includes two books: a) The teacher's book: contains the repertoire of selected songs and is accompanied by a triptych: 1) information about each song, 2) learning objectives, and 3) a teaching guide for each song. b) The student's book: contains the same songs, accompanied by practical exercises that methodically teach musical elements related to the specific song and help the child learn to read the score. The aim of the method is to teach children: - Healthy head voice and the ability to sing in the correct pitch - Recognition of basic choral score notation - Basic elements of music reading and not just simple memorization of the taught songs - Recognition of rhythmic and melodic patterns - Musical forms - Basic elements of body movement in combination with singing, elements that important music educators, such as Dalcroze and Orff, successfully incorporated into their teaching for children of this age. - An initial acquaintance with the families of string, wind, percussion, and keyboard musical instruments. The musical material comes from Greek and foreign melodies, translated into Greek, for easier learning by young children. The songs are written in suitable keys for the vocal range of the age 6-8 years, without exposing the voice to extreme areas. The form of the songs is in unison, while a series of canons is also presented, within the flow of the method's lessons, which can be taught and presented in a concert, either in unison or in two groups, depending on the number and capabilities of the children. This musical material has been developed through the application of a model experimental program implemented since 2009 by the author for children of this age. The two-part canons function as the children's primary polyphonic experience, helping them to progress to polyphonic choral works in the next stage of their choral education. The themes of the songs vary, so they can serve as material for concerts throughout the school year, and there is also a small collection of Christmas songs, vocally suitable for young children. This method is the first volume of choral teaching for young children aged 6-8 years and is followed by the second volume for children aged 8-10 years (under publication), where the transition is made from unison and simple canons to more complex two-part singing through authentic choral works from the Greek and international choral repertoire.