Explore some more spatial structural approaches to developing number sense here: https://numbersensemaths.com/blog-and-research/visualising-mental-images
Number talks: https://arc.educationapps.vic.gov.au/learning/resource/MG9DYC/number-talks-at-derrimut-primary-school
Develop a series of number talks for F, 1 or 2 that incorporates spatial structure. Align to the content descriptors of your chosen year level, and the RNS framework. (Worked examples for each year level will be provided).