Thank you to both! It makes sense to show it first in one language and then in the other. It sounds like a lot of work too!!!
But it is definetly the only way you can do it if you want your kids to be completly bilingual and know how to read and write a language correctly. That is the other factor to take in consideration, kids may be able to learn how to speak a language, but if they are not expose to the written form the won't know the proper way to read or write.