relation: http://repository.uhamka.ac.id/id/eprint/24713/ title: The Influence of Multiple Representation-Based Online Lectures Using Geogebra on Understanding of Students' Thermodynamics Concepts During the Covid-19 Pendemic Period creator: Martin, Martin subject: ZA4450 Databases publisher: AL-ISHLAH: Jurnal Pendidikan type: Other type: NonPeerReviewed format: text language: en identifier: http://repository.uhamka.ac.id/id/eprint/24713/1/document.pdf identifier: Martin, Martin The Influence of Multiple Representation-Based Online Lectures Using Geogebra on Understanding of Students' Thermodynamics Concepts During the Covid-19 Pendemic Period. AL-ISHLAH: Jurnal Pendidikan.