Teaching in a Dual Language Program at the same time that you write curricular units is always a double challenge because the number of children and responsibilities associated to their academic, social, emotional and linguistic development. However, in the last few years, with the growth in this type of programs, there are more and more resources available.
The Internet provides a wide range of current and authentic resources that can be added to the teacher's toolbox. However, there is still much need more resources and here is where teacher's ingenuity, creativity, and originality come into place. I suggest the teacher make tapes of non-fiction books in order to provide the student with many opportunities to listen to the principles involved related to more technical topics such as the one on this unit. These books, would allow the second language learners to hear a native speaker, reading aloud books concentrated on the area of study. These could be used at the listening center after they have been introduced to the class.