The successful teaching resource for open, flexible mathematics instruction - also available in English. The proven teaching resource Flex and Flo has been adapted for bilingual instruction in the English language. The English edition of Flex and Flo enables the implementation of the goals of bilingual education, allowing students to develop foreign language competence through subject content beyond just language classes. For grades 3 and 4, there are four thematic booklets covering the topics of addition and subtraction, multiplication and division, geometry, as well as word problems and measurements. The thematic booklets are aligned with the guidelines of the federal states and convey the required content-related and process-related competencies.