1) The document discusses different modes of interaction (face-to-face, synchronous, asynchronous) and appropriate technologies that can be used for science experiments incorporating these modes.
2) Examples are given of experiments conducted face-to-face and synchronously, as well as one conducted asynchronously where students shared results over time.
3) The benefits and challenges of each mode are considered, such as immediate feedback with face-to-face interactions but limited collaboration, versus greater collaboration asynchronously over longer periods.