I`d like to cotinue the topic connected with using handouts on lessons. And I`m happy to share with you one interesting site. In the green table you can choose the level of student, vocabulary or grammar topic, sort of material ( game, song, video, worksheets, flashcards and so on).
Level - Intermediate ( B2)
Topic - Science and technology
https://en.islcollective.com/resources/search_result?Tags=Search+free+ESL+resources&Vocabulary_Focus=Science&Material_Type=worksheets&Level=Intermediate+%28B1%29&searchworksheet=GO&type=Printables