For a field test of WGT during fall 2018 to spring 2019, Q-CCIIT observations at baseline informed the selection of areas for growth in the caregivers’ practices. PD providers and caregivers could then select from an array of PD tools based on constructs and competencies in the Q-CCIIT measure. We organized these tools into nine web-based modules, or sections, designed to support infants’ and toddlers’ (1) language and literacy development, (2) social and emotional development, and (3) cognitive development. We further divided these modules into key practices that enabled caregivers to explore skills and exercise new caregiving techniques. (author abstract)