What impresses you about this problem? It doesn't require significant specific mathematical content, but it does require some mathematical reasoning. It lends itself to more than one solution, depending on where the coin replacement begins. Most solvers would use the natural strategy of drawing a picture or diagram. The problem is also likely to engage and challenge students, since it is different from more traditional problems.
Efforts to improve educational outcomes for English learners often focus on "academic language," but unfortunately the field lacks a clear, agreed-upon definition of the concept. This article reports on a design research study that focused on students' engagement in one academic practice over several months: reading and discussing expository science texts in Spanish. By looking closely at one practice, the research provides a grounded perspective on academic language and the bilingual resources that English learners bring to academic tasks.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.