The present study on Mobile Learning and Numeracy examines how mobile learning (m-learning) could influence and improve numeracy education at early grade levels (ages 4-10) especially in low-income countries. Key questions to guide the research include: 1) What are the benefits and challenges of integrating mobile learning into early grade numeracy education? 2) What is the role of a teacher with regard to mobile learning and numeracy education? 3) How can the community and the parents actively contribute to/participate in the child’s numeracy education with the use of mobile devices? and 4) How can mobile technology be used effectively in measuring/assessing numeracy gains? The conclusions and recommendations of this study have been informed by an international working group that met over two days during the first International Numeracy Conference in Berlin in December 2012. We would like to acknowledge the following participants of this working group for their thoughtful contributions: Michaela Brinkhaus (BMZ); Dorothea Coppard (GIZ); Melanie Stilz (Konnektiv Büro für Bildung und Entwicklung); Jens von Roda-Pulkowski (KfW); Abigail Bucuvalas (Sesame Workshop); Mr. Kann Puthy (Primary Education Department, MoEYS Cambodia); Edward Barnett (DFID).