In order to participate in the Open Campus, you need to register in advance at the following Open Campus website.
The University of Tokyo Open Campus for High School Students（Japanese only）»
https://www.u-tokyo.ac.jp/opendays/index.html

This site provides details of a total of 40 projects (total number of projects) conducted by the School of Engineering. Please make use of this site to select a project to participate in.

Special site for the School of Engineering（Japanese only）»
https://www.t.u-tokyo.ac.jp/foe/admission/open-campus

Past Open Campus Information（Japanese only）»
https://www.t.u-tokyo.ac.jp/foe/admission/open-campus/archive