I can provide English Tuition by Skype or via the Video Chat system here on Freelancer. I will ensure that they also have assignments to do, that will be appropriate for the level of you children's skills
Even though I am not from a native English speaking country, I have grown up with English as my first language, I am currently studying in Australia and have an IELTS score of 8. This should give you an idea of how fluent I am in English.
I am a substitute teacher working in Japan so tutoring the clients on Beijing time is no problem.
I am a native English speaker from the US with excellent reading and writing skills.