Interdisciplinary teaching at home

Now my ten-year-old daughter is on summer vacation. Since she doesn't receive proper English education at school, it is time for her to learn English! At home, we have been working on interdisciplinary learning: learn about the solar system in English! She learns the concept in English and translate her learning into Japanese so that she can share that with her school teacher as well as classmates. We chose the topic because she has been interested in it for a long time. She seems very motivated to learn about it. I hope Japanese schools will implement interdisciplinary instruction soon because it helps students better understand what they learn connects the real world.