No, there is no need to hand them over unless this is (temporarily) necessary for assessment. You also retain the copyrights in your self-made recordings, unless you assign these rights to the institution in a signed declaration. However, the institution can negotiate some user rights with you. One such rights may be that the resources included in your digital portfolio remain available electronically for a certain period of time, for example for use as study resources by other students or lecturers. If the institution has made the recordings possible in whole or in part (with funding or by making facilities...
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