Sound Explorations (Primary): This resource e-book from STAR is a compilation of lesson ideas for teaching improvisation and composition at the primary level.
https://viewer.joomag.com/sound-explorations-pri/0489051001615435366?short&
The lesson ideas are not specific to any approach as they draw inspiration and combine ideas from various instructional approaches. Examples of those closely related to the principles of the Kodály approach include:
Lower Primary: From Speech to Music (pp 20 - 21)
Middle Primary: Compose Your Way Home (pp 43 - 45)
Upper Primary: Creating Memories Through Song-writing (pp 98 - 100)
Primary 1: Singing with Handsigns (I) https://vle.learning.moe.edu.sg/moe-library/lesson/view/705a0610-9e0d-44da-86fe-7271986c8f7c/cover
Primary 2: Singing with Handsigns (II) https://vle.learning.moe.edu.sg/moe-library/lesson/view/e7484b29-52d7-4530-bdcd-9f1fc48139f6/cover
Primary 2: Note Values (ti-ti & tikka-tikka) https://vle.learning.moe.edu.sg/moe-library/lesson/view/d7cd9bc2-461f-438c-899a-4bf43ec12544/cover