The document describes a CLIL (Content and Language Integrated Learning) lesson project on equivalent fractions taught in English by Joan Villarroya Bustos to a 6th grade class of 20 students. The lesson incorporates hands-on and group activities to help students understand, identify, and create equivalent fractions while practicing relevant mathematical and English language skills. While most activities went as planned, one online game did not work and had to be replaced with an alternative digital activity. In reflection, the teacher felt the lesson objectives were achieved and students were engaged, but managing language production remained a challenge of CLIL lessons.