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...Teaching aids and work with models in e learning environments kateina janaikova antonin janaik charles university faculty of education czech republic katerina jancarikova pedf cuni cz jancarik abstract pisa study has defined several key areas to be paid attention by teachers one these is the term model can understood very broadly it refer a drawing chemical reaction plastic permanent mount taxidermy advanced d projections are no longer confined materials available physically at schools thanks information technology included lessons almost without any limits however specific due simple fact that always differs from what represents efficiency using ict affected negatively case complex requires high level abstraction which pupils not capable harrison treagust points out demands on upper secondary children must taught how relate real objects early stages linking an object its isomorphism basis for successful thus developed systematically consistently into younger learners scope natural sci...