Here's another up-and-coming duo: Squeeze for Thoughts! They create worksheets in both Spanish and English! I admit my Spanish is barely passable, but I would love to help my ELL students as much as possible! (I've lived in another country where English was not the first language.) Photo by Mark Tegethoff on Unsplash I love their Moon phases worksheets. The worksheets are available for free and are of high quality. An answer key is included for your use ( English version / Spanish version ). It looks like they have already created many resources. If you like their resources, leave a review and follow their store!
I'm just a science teacher sitting at my computer generating and finding ideas to make learning more enjoyable.