Eng S Jama is an experienced electronics engineer turned an educational tutor and a self-published author.
Fractions Visually is for 'children who think fractions are no fun' and 'grown-ups who have never found the best visual resources to master basic maths fractions'.
Ages 5-11, Year groups 1-6 and Key Stages 1-2. Or internationally equivalents in primary curriculum (infants and junior schools).
Contact the author? https://fractionsvisually.com/contact/