Mini whiteboards (Show Me)
Every pupil draws or types on the same background; you see every board live.
Choose a background (blank, grid, lined, a slide, an image, or a table with some cells filled in). Pupils draw with the pen (it is selected first) or switch to Text to type. You see each board fill in as they work.
Put up to three boards on the screen side by side, labelled by letter and never by name, to discuss them with the class. Use "Collect all boards" to grab what everyone has so far, even if they haven't pressed Send.