Do I need JR Pass? transportation in Kyoto?

Hi,
I am going to visit Japan in July with my 3 grown children, arriving at Narita airport, we will take the Narita Express train to Tokyo station, and then take the Bullet train to Kyoto, will do sightseeing in Kyoto, such as Arashiyama, Fushimi Inari Shrine, Kiyomizu-dera Temple, Kinkakuji Temple and Gion.
So, we will stay in Kyoto for 3 days, then back to Tokyo, and maybe 1 day tour to see mt.Fuji,and spend the rest of 3 days in Tokyo.
My question is, do we need tickets for JR Pass?, Is it cheaper for 4 people to go around by taking Taxi then taking the train?

Thank You.