TY JOUR TI The Motivational and Value Criterion in the Development of Musical-Creative Abilities of Primary School Students by Means of Sand Animation (Experimental Results) KW motivational-value criterion KW the need for development and learning KW self-development (motivation) KW the desire to express oneself (competitions) KW value attitude to art KW musical-creative abilities KW elementary school students KW sand animation JO Scientific Research and Development. Socio-Humanitarian Research and Technology AU Levchenkov, V.V. PY 2026 IS 14 PB INFRA-M Academic Publishing LLC.