What would the curriculum look like if it were developed from the perspective of measuring? Without formal tools, the Yup'ik Eskimos of Alaska used their body as a measuring device and employed ratios extensively in their daily practices. "Math in a Cultural Context" is developing curriculum materials based on Yup'ik Elders use of mathematics. This paper describes a hypothesised learning/teaching sequence that is grounded in real life experience and linked to the mathematics in the classroom. Activities that were trialled in classrooms at a K-12 school in interior Alaska are also reported.