ATSIMA is an Indigenous led, non-profit, member-based group representing organisations, communities, institutes and individuals around Australia. We aim to inspire, promote and support improved mathematics outcomes of Aboriginal and Torres Strait Islander students.

ATSIMA is a network to connect “change agents” to transform mathematics education. The Alliance includes:

- Community (e.g. parents, AEWs)
- Practitioners (e.g. online learning communities, AAMT)
- Advocates (e.g. AECG)
- Education systems
- Industry (e.g. Business Council of Australia); and
- Governments

ATSIMA's vision is that "all Aboriginal and Torres Strait Islander children will be successful in mathematics".