As children learn more about language, they use it more effectively to achieve their conversational goals. They choose appropriate speech acts, establish joint attention, contribute new information, take up information from others, and take turns. They learn how to enter an exchange among others from as young as age two. Their intrusions in ongoing exchanges typically contain new information. Planning an utterance takes time, and children learn to plan what to say so as to take turns on time. This can be tracked in their answers to yes/no and wh- questions, where they get faster with age. They plan pretend play, assigning roles, assigning actions, and also utterances for each character enacted. They track common ground and design referring expressions for their addressees, and they repeat new words to mark uptake. They distinguish requests from offers, and, on occasion, persist in making repeated requests themselves. They clarify what they mean when asked and offer spontaneous repairs as well. In all this, they track what the others in the exchange say and choose when to enter the exchange themselves.

Chapter 11 opens by asking readers to imagine what different kinds of people likely know and don’t know. For example, everyone knows that things fall when you drop them. But details of social etiquette and childhood memories will vary across people. This exercise relates to the Maxim of Manner, which focuses on brevity, clarity, and orderliness for contributions to successful conversations. Information structure is central here: Learning is enhanced when learners meet given or familiar information before new or unfamiliar information. In other words, we build on what we already know. One reason that this point is critical to public engagement is that we compute meaning for words and sentences as we hear/read them. The Worked Example uses a demonstration in which we write people’s names in the International Phonetic Alphabet to compare two orders for presenting critical information. This chapter’s Closing Worksheet asks readers to write down an ideal interaction they want with the demonstrations they are developing and then to change the order of the elements around.

Chapter 14 opens by asking readers to produce several nouns to label an unusual object and then to describe their demonstration’s main activity in several ways. The chapter describes research with K-12 science classes showing learning boosts when concepts are taught before new terms for the concepts and that students are more interested when such terms are minimized. Jargon is the ultimate in new information, so spotting it is a critical first step toward clearer and more effective demonstrations. Strategies for jargon spotting are exemplified: words with Latin or Greek etymology (e.g., "pharyngeal"), acronyms (e.g., "SVO" for subject-verb-object), ambiguous words with both general and specialized meanings (e.g., "stress"). Many experts new to public engagement find it hard to avoid jargon. A demonstration on syntactic ambiguity shows that it can even be done with esoteric or abstract topics. Thus, while jargon is one of the tools of science, incomplete is not incorrect. The Worked Example discusses an online text editor’s markup of a draft sentence. This chapter’s Closing Worksheet asks readers to aim such an editor to the written support for their demonstration.

This chapter deals with the analyses of the grammatical phenomena that have been related to information structure in the Romance languages, and that have played a central role in the general research on the encoding of information-structure notions in the grammar and at the interfaces. An overview is presented of this work, which has offered a great contribution to our current understanding of both empirical and theoretical issues. Highly debated questions are addressed, such as the relationship between focus and newness and between topic and givenness, the grammatical and interpretive correlates of different types of focus and topics, and the ‘aboutness’ nature of topics in contrast with subjects.