In my post, The Best Multilingual & Bilingual Sites For Math, Social Studies, & Science, I share various links to online content knowledge and how to use them effectively with English Language Learners.
I’m adding some additional resources related to math instructional videos in Spanish though, at the same time, I recognize that they might be of superior quality.
One is the Khan Academy multilingual resources. They seem to have a number of resources in multiple languages, along with a separate YouTube channel for videos in Spanish. The richest man in the world, Carlos Slim, has also recently committed to have ALL their resources translated into Spanish.
You might also be interested in The Best Posts About The Khan Academy.
Tareas Plus has a huge number of instructional videos on math available for viewing, though it doesn’t appear that they have the same kind of follow-up exercises that Khan makes available. The videos seem to be available for free, and you can search for the ones you need. However, many of their video-based “courses” appear to require payment.
I’ll be adding this info to the “Best” list I mentioned in the first line of this post….