Young children vary in mathematical skill and knowledge with differences emerging prior to formal schooling (e.g., National Mathematics Advisory Panel, 2008). Children from lower income backgrounds and those with disabilities may especially be at a disadvantage for skill development (e.g., Hojnoski, Caskie, & Miller, 2017; National Mathematics Advisory Panel, 2008). This is evident in research showing that young children of low-income families fall on average 7 months behind their peers in their mathematical knowledge (Starkey, Klein, & Wakeley, 2004). Socioeconomic discrepancies, though not prevalent across all skills, consistently emerge with verbal and more advanced strategies related to counting, comparison, and patterning (e.g., Jordan, Huttenlocher, & Levine, 1994; Sarama & Clements, 2009). Variable exposure to mathematical language and concepts is evident across homes, with parents of middle-and high-income families observed to engage with their children in more complex ways, such as by referencing more sophisticated concepts (Levine, Gunderson, & Huttenlocher, 2011) and setting higher expectations for early learning (DeFlorio & Beliakoff, 2015). Home practices likely contribute to discrepancies in skill and knowledge as increased mathematical interactions between parents and children correspond with higher mathematical achievement (Berkowitz et al., 2015; Susperreguy & Davis-Kean, 2016). Given the importance of a strong foundation in early mathematics (e.g., Duncan et al., 2007) and the importance of the home numeracy environment in children's developing mathematical competencies (e.g., Kleemans, Peeters, Segers, & Verhoeven, 2012; Skwarchuk, Sowinski, & LeFevre, 2014), it is crucial to determine ways to foster numeracy interactions between parents and their children. Support of mathematical interactions can occur within home activities such as shared book reading. A large body of literature recognizes shared book reading as an effective means of increasing child vocabulary and other literacy skills (see Towson, Fettig, Fleury, & Abarca, 2017), though its application to mathematical knowledge and skills has not been fully explored (e.g., Purpura, Napoli, Wehrspann, & Gold, 2017). Dialogic reading (DR) is a method of shared book reading (e.g., Whitehurst et al., 1988) involving mnemonics that aid adults in using general interaction strategies (prompting, evaluating, expanding, and repeating; PEER) 831762T ECXXX10.