?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Frepository.uhamka.ac.id%2Fid%2Feprint%2F34091%2F&rft.title=Artikel+18_2017+Isti&rft.creator=Tri+Isti+Hartini%2C+TIH&rft.subject=ZA4450+Databases&rft.description=This+study+aimed+to+determine+the+effect+of+online+lectures+Via+Zoom+in+thermodynamics+courses+based+on+multiple+representations+using+Geogebra+on+students'+conceptual+understanding+in+the+midst+of+physical+standing+conditions+(Pendemic+Covid-19).+The+research+method+used+is+pre-experimental+design+(nondesigns).+The+research+phase+includes+preliminary+studies%2C+including+field+surveys+and+literature+studies.+The+stage+of+designing+and+reviewing+test+instruments+based+on+Multiple+Representations+(MR).+The+MR-based+test+instrument+was+then+used+as+an+instrument+to+perform+the+pretest+and+posttest.+From+the+analysis+of+research+data%2C+it+was+found+that+the+average+value+of+students'+conceptual+understanding+before+being+given+treatment+was+42%2C+while+the+average+value+of+student+learning+outcomes+after+being+given+treatment+was+77.+After+the+calculations+were+carried+out+for+hypothesis+testing%2C+it+was+obtained+that+t+count+was+4.293+and+t+table+was+1.318%2C+because+t+arithmetic+%3E+t+table+that+is+4.293+%3E+1.318+then+H+0+is+rejected.+Thus+H1+is+accepted+which+states+that+there+is+an+effect+of+online+lectures+via+zoom+in+the+thermodynamics+subject+based+on+multiple+representations+using+Geogebra+on+students'+conceptual+abilities+in+the+midst+of+the+covid+-19+pandemic.&rft.publisher=Uhamka&rft.type=Other&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=http%3A%2F%2Frepository.uhamka.ac.id%2Fid%2Feprint%2F34091%2F1%2F%2523P18_1571.pdf&rft.identifier=++Tri+Isti+Hartini%2C+TIH+++Artikel+18_2017+Isti.++Uhamka.++++(Unpublished)++