math materials in Spanish

I'm wondering if anyone knows of good math materials in Spanish. There are very few basic ed in Spanish classes since federal funding can't be used, but in NYC there are a few classes that use other sources of funding or are fee-based.

I have collected a few Spanish-language math materials. A couple seem promising, but would require some adaptation (or just clipping out pages that are useful for us). For example, this link has a workbook with a kiddy cover page, but with worksheets inside that could be useful. Maybe excerpting some individual pages would be useful. Bridges Practice Books provide activities and worksheets for additional skill review, informal paper-and-pencil assessment, preparation for standardized testing, and differentiated instruction. Each volume also includes answer keys and a complete listing of the student pages grouped by skill.

And these links have many pages of student materials, but the pacing is too slow and we probably want the stuff that is most focused on functions. In each of the three Visual Mathematics courses, students explore topics including geometry, measurement, algebra, probability, statistics, numeration, number theory, operations, and estimation. Course I is recommended for grades 5 and 6. Each of the 45 lessons is intended for a few days of class time. (Course 1 and 2 are available in Spanish blackline masters)

Does anyone else have suggestions for where else we could look?