In case you haven't already heard, Lee & Low has created a new section on their site to help bilingual educators and families. Check out Recursos en español for videos and activity guides in Spanish!
Also, I want to give a little plug to a new book that they are publishing. Sharuko: Peruvian Archaeologist Julio C. Tello/ El arqueólogo peruano Julio C. Tello (aff link), is now available for pre-order. It will be available on May 12th. I've already read it and it is such a great biography! So much fantastic information and inspiring for children everywhere, this book is a must-have for school and home libraries.