Yes. Teachers and tutors can use eduKateSG as a reference, planning aid, discussion source, and route into deeper subject or learning-system material. The site can be useful for explaining a concept from another angle, identifying misconceptions, comparing levels, planning a sequence, or helping a learner connect school knowledge to a wider system.
The strongest use is selective rather than mechanical. A teacher should decide what the learner actually needs, adapt the depth and language to the class, and verify any current syllabus or examination requirement before relying on an older page. Sharing a link or using an idea for teaching is different from reproducing substantial site content as if it were one’s own.
For teaching practice, begin with the Tuition & Teaching Hub. For how learning is repaired and strengthened, use the Study & Learning Methods Hub and the Diagnostics & Recovery Hub.