UNICEF gathers evidence on the situation of women and children globally. The data sets include accurate, nationally representative data from household surveys and other sources.
One particular data set is the diet of young children globally – refer to below link. Students can chose to focus and compare across countries based on Income status or region. Or within a country across gender, age or level of education. This could culminate in students having to visually represent their findings.
The students could formulate their own survey and data attributes around diet for the classroom and collect this data and compare to another country.
Furthermore, this can be easily linked into the health curriculum.