The report begins with an overview of the importance of early math learning, followed by an overview of math achievement among DLLs nationally and in California. Next, we examine existing evidence about effective and promising practices for supporting DLLs’ early math learning in school and for engaging DLL families in early math at home, including profiles of two organizations that embody the lessons we identify for supporting DLLs’ early math achievement. The following section highlights research, policy, and practice gaps and opportunities related to promoting early math for DLLs. Finally, we offer recommendations for opportunities for improving support for DLLs’ early math achievement in research, policy, and practice. (author abstract)