Show the class a ready-made 'interactivity' by manipulating it as they watch, talking through what you are doing. Depending on the class' age and experience, help them make the tool themselves, or give out some you have already made.
Children could then work in pairs, either at a computer, or with the card version. Encourage them to talk to each other as they try out their ideas.
Tell me about what you are imagining.
How could we "check" what you have done?
Children could demonstrate a turn and challenge other children to select what it represents from, for example, a list of three scenarios.
Some children will need to 'copy' the turning action of an item with their tool before they are confident at visualising.