effective strategies (by 1 person)

effective teaching (by 1 person)

geometric teaching (by 1 person)

malaty (by 1 person)

oral heuristic questions (by 1 person)

point (by 1 person)

problems (by 1 person)

proper mathematics (by 1 person)

ray (by 1 person)

segment (by 1 person)

straight line (by 1 person)

written heuristic questions (by 1 person)

young children (by 1 person)