The Stack of series is inspired by the thematic vocabulary approach, which is supported by research in language development and cognitive science. Research shows that:
• Vocabulary is stored in semantic networks, not as isolated words
• Learning related words together strengthens connections in the brain
• Rich, meaningful vocabulary instruction leads to stronger language outcomes
Studies in vocabulary instruction emphasize the importance of deep, contextualized learning rather than isolated word exposure.
Beck, I. L., McKeown, M. G., & Kucan, L. (2013). Bringing words to life: Robust vocabulary instruction (2nd ed.). Guilford Press.
Hadley, E.B., Dickinson, D.K., Hirsch-Pasek, K., & Golinkoff, R.M. (2018). Building semantic networks: The impact of a vocabulary intervention on preschoolers' depth of word knowledge. Reading Research Quarterly. Advance online publication. doi: 10.1002/rrq.225
Ukrainetz, T. A. (2006). Contextualized language intervention: Scaffolding prek-12 literacy achievement ; teaching students with language impairments the language needed for academic success through scaffolding explicit skills in purposeful contexts. Pro ed.