teaching large magnetic triangular plate set compasses protractor teacher-specific magnetic triangle blackboard drawing circle

[strong magnetic] 5 full set-5 pieces upgraded and thickened [non-magnetic] 5 full set-5-piece set upgrade thickening [strong magnetism] 2 triangle protractor compasses 4 pieces [non-magnetic] 2 triangle protractor compasses 4 pieces [strong magnetism] 2 triangular plate + protractor-3 sets [non-magnetic] 2 triangular plate + protractor-3 sets [strong magnetic] 45 degrees +60 degrees triangular plate-2 sets [non-magnetic] 45 degrees +60 degrees triangular plate-2 sets [strong magnetic] 45 degrees triangular plate [upgrade thickening]] [non-magnetic] 45 degrees triangular plate [upgrade thickening]] [strong magnetic] 60 degrees triangular plate [upgrade thickening]] [non-magnetic] 60 degrees triangular plate [upgrade thickening]] [non-magnetic] 100cm ruler [upgrade thickening]] [non-magnetic] dual-use compasses [upgrade thickening]] [strong magnetic] protractor [upgrade thickened materials]] [non-magnetic] protractor [upgrade thickened materials]]

teaching ruler