kejia teaching triangular plate set large magnetic plastic protractor compass ruler teacher whiteboard mathematics teaching aids

protractor (non-magnetic) protractor (with magnetic) 60 ° teaching set square 60 ° teaching set square (with magnetic) 45 ° teaching set square 45 ° teaching set square (with magnetic) k-200 solid compasses k-300 compasses k-500 compasses (no large round accessories) k-100 ruler k-100-1 ruler (removable) triangular plate set triangular plate set (with magnetic) k-12 five-piece set five-piece set (with magnetic) five-piece removable ruler

regular