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Some science educators claim that children enter science classrooms with a conception of heat considered by physicists to be incorrect and speculate that “misconceptions” may result from the way heat is talked about in everyday language (e.g.,  Lautrey and Mazens, 2004 ;  Slotta and Chi, 2006 ). We investigated talk about heat in naturalistic conversation to explore the claim that children often hear heat discussed as a substance rather than as a process, potentially hindering later learning of heat as energy involved in emergent processes. We explored naturalistic speech among children and adults to understand the nature and the frequency of heat- and temperature-related conversations that young children are involved in. This study aims to investigate the actual linguistic resources that children have available as part of a sociocultural approach to cognitive development. Parents’ everyday conversations about heat and temperature with their 2–6-year-old children were drawn from the Child Language Data Exchange System (CHILDES) language database and from a parent–child book-reading study. Parents used the word  heat  rarely, but they did so in ways that implied it is a substance. Parents never talked about heat as an emergent process but sometimes as a direct causal process. Most of the heat- and temperature-related talk, however, focused on words like  hot  and  cold  to describe temperature as a property of objects. This investigation of what young children actually experience in everyday conversations is a step toward studying how everyday language may play a role in children’s understanding of heat and temperature.

Family Conversations About Heat and Temperature: Implications for Children’s Learning