@inbook {933, title = {Classroom Assessment and Learning Support for Logical Reasoning in Mathematics Education - Suggestion of an E-proof-Environment}, booktitle = {Classroom Assessment in Mathematics: Perspectives from around the Globe}, year = {2018}, publisher = {Springer}, organization = {Springer}, address = {Cham}, author = {Platz, Melanie and Krieger, M and Winter, K and Niehaus, Engelbert}, editor = {Thompson, Denisse R. and Burton, Megan and Cusi, Annalisa and Wright, David} }