May 11 homework

I try to greet politely when I see teachers, someone I don't know and so on. So, I say "ohayogozaimasu" in the morning and say "konnichiwa"in the afternoon. On the other hand, I try to greet friendly when I see people I know well like my family members and friends. So, I say "ohayo" in the morning. I don't use "konnichiwa" to my friends or family members.
I rarely touch people when I talk to them because I think I don't need to do that. Moreover, I am worried that people may not want to be touched.

Buddhism

I think there are many customs affected by Buddhism in Japan, but I don't know my customs are based on Buddhism or Shinto. I don't know teachings of Buddhist, though I take part in some religious events like obon.

1. When we get a ochu-gen or an oseibo, my grandmother put them in front of a butudan. I suppose she wants to give our ancestors them.

2. Before I take snacks from the butudan, I have to sit in front of butudan, pray and say hello to my grandmother who passed away and ancestors. I feel that taking them without doing this is very rude and bad.

3. My family visit and clean a grave in Obon season. I go there because I want to pray for my grandfather.

4. When my father sees a dead dog or a cat run over by a car, he says "namuamidabutu" or "nanmaida". He does this because he wants to protect himself from a bad spirit.

5. Once two or three manths, obo-sun comes to my house and pray in front of the butsudan. I don't met him because he comes while I go to school. My grandparents pray with him. My grandmother sometimes makes ohagi on the day he comes.