Parental involvement is a key factor in children’s mathematical success (Cai, 2003; Fan & Williams, 2010). However, second-language parents may face linguistic and cultural challenges when supporting their child’s mathematics learning. While mathematics is seen as a universal language (Adoniou, 2014), research indicates that mathematical discourse is deeply embedded in language and culture (Moschkovich, 2010). Transitioning between home and school mathematical language can create barriers for students and their families. This presentation reports findings from a scoping review investigating how parents with a second language support their primary-aged children’s understanding of mathematical concepts in English. The review identifies key themes, including the challenges of differing mathematical terminology and representations across languages. Limited proficiency in the instructional language can reduce parents’ confidence and access to school-provided resources. Abstract and context-dependent nature of mathematical vocabulary further hinders their ability to explain concepts effectively (Gorgorió & Planas, 2001). Despite these barriers, the review highlights strategies parents use to support their children’s learning, including visual and concrete representations, such as diagrams, manipulatives, and real-world applications. Digital tools, including multilingual educational apps and online tutorials, provide scaffolding in both the home language and English. Community-based initiatives, such as culturally responsive numeracy programs and peer support networks, enhance parental engagement and confidence. Schools can support second-language parents by providing accessible, multilingual resources and ensuring culturally responsive home-school communication. Professional development for teachers on engaging diverse families in mathematics can strengthen parental involvement in children’s numeracy development.