The St. Paul’s Public Schools produces some great bilingual materials in English and in Khmer (Cambodia), Hmong, Oromo, Somali, Spanish and Vietnamese. They’re not online, and you have to purchase them, but the prices are very reasonable. I’ve used their materials for years.

Even though they aren’t online, I’ll still adding the resource to The Best Multilingual & Bilingual Sites For Learning English just because they’re so useful.