A three-week unit designed to be completed in an elementary level, dual-language immersion classroom, this resource includes several lessons intended to introduce young learners to the solar system, the Earth and how the Earth compares to the other planets in Spanish. In the first week, the whole class engages in kinesthetic activities that show concepts of distance, size and rotation. The second and third weeks are dedicated to researching a planet and comparing it, in writing, to the Earth.