“…Children's play with these simple, three-dimensional geometric building shapes has been linked to the development of convergent and divergent problem-solving skills (Pepler & Ross, 1981), spatial language (Ferrera, Hirsh-Pasek, Newcombe, Golinkoff, & Lam, 2011), logico-mathematical knowledge (Kamii, Miyakawa, & Kato, 2004), and spatial visualization abilities (Caldera et al, 1999) in young children. For example, Caldera et al (1999) conducted in-depth observations of 60 preschool children's structured and unstructured play with blocks and assessed the relationship between particular building behaviors and children's spatial skills. Caldera et al found that complexity of building strategies and interest and involvement in play activity were related to spatial visualization (i.e., ability to make mental manipulations of spatial information) and perceptual field independence (i.e., ability to focus on relevant features of an object outside of context).…”