Schul Vokal Dots by M. Klein is a free schoolbook sans with a calm, primer-like tone. The letters are plain, rounded, and friendly, but the telling idea is the detached dot used as a teaching cue, giving the font a classroom feel rather than a slick editorial one.
This free font makes most sense anywhere reading and sound need to meet on the page: early-learning worksheets, phonics cards, classroom posters, literacy handouts, and simple educational book covers. It also suits short headings, labels, and title lines for children's materials, because the dot motif turns ordinary lettering into something that feels visibly guided and instructional.