PADLET
In blended or online classrooms, padlet can be very useful for gathering responses from the student's work in the platform: responses, reflections, brainstorming ideas. It makes a great pre-task, because in the classroom these ideas could be discussed, commented on, etc.
As a follow-up, it would also facilitate the ongoing connection between the platform and the live session, allowing learners to post summaries or their own conclusions from the tasks carried out in class.
Padlet is a very powerful tool for getting student responses. The teacher provides the link and instructions, and learners can post text, audio, video, urls and comment on relevant links.
It can definitely facilitate cohesion between the different settings the classroom is taking place, it's very powerful for connecting the two worlds:
In hybrid classrooms, students can access the board form any device so it is a task that could get students collaborating from different settings and in real time. In this kind of hybrid environment I would use padlet for very guided or simple responses.
ANSWER GARDEN
Answer Garden and Wordwall are also brilliant to set instant assignments and get immediate feedback and check understanding or vocabulary. You have up to 5 in the free account.
They would work really well in hybrid classes to set pre-tasks in the platform and create some positive group dynamics while working online, and then bring in the results and comments to the live session, where students could going on discussing in small groups or breakout rooms.
MENTIMETER
Mentimeter is also a tool that facilitates collaboration among students. The teacher can set up a quiz o collaborative activity for students to submit (brainstorming words or concepts, answering questions, polls, etc) and the learners access the quiz from any device using the link provided by the teacher. This is incredibly convenient to make the two settings of the class link together and be working together. There are many tasks that can be done with the results for students to continue engaging and sharing: commenting and discussing, mediating the results, comparing, analysing, etc. https://www.youtube.com/watch?v=Eyd0G122dNI&feature=emb_title