"Pre-K Mathematics" is a supplemental mathematics program focusing on a range of mathematical concepts to help develop children's informal mathematical knowledge. The "Pre-K Mathematics" program includes teacher-led, small-group mathematics activities that are engaging and hands-on, as well as caregiver-child activities that…

Using multitrait, multimethod data, and confirmatory factor analysis, the current study examined the effects of arithmetic item formatting and the possibility that across formats, abilities other than arithmetic may contribute to children's answers. Measurement hypotheses were guided by several leading theories of arithmetic cognition. With a…

In this article, we considered evidence from our intervention research programs on whether students with learning disability (LD) in reading and mathematics (comorbid LD) respond differently to intervention, compared to students with reading LD alone (RD) or to students with mathematics LD alone (MD). The goal was to gain insight into whether…

"Ladders to Literacy" is a supplemental early literacy curriculum composed of more than 70 activities designed to develop children's print/book awareness, metalinguistic awareness, and oral language skills. The curriculum, published in the book "Ladders to Literacy: A Preschool Activity Book, Second Edition," can be used in a…

"Literacy Express" is a preschool curriculum designed for three-to five-year-old children. It is structured around units on oral language, emergent literacy, basic math, science, general knowledge, and socioemotional development. It can be used in half-or full-day programs with typically developing children and children with special…

"Curiosity Corner" is an early childhood curriculum emphasizing children's language and literacy skills. It comprises two sets of 38 weekly thematic units, one for three-year-olds and one for four-year-olds. Program staff conduct daily lessons using sequential daily activities. The What Works Clearinghouse (WWC) reviewed three studies of…