6

1) Udaka Narayana Puja i.e. worshipping of God in Water
2) Agni Puja i.e. worshipping God in Fire
3) Aditya Puja .i.e. worshipping God in the Sun
4) Manasika Puja i.e. worshipping God in the Shrine of one's heart. (offering of worship mentally)
5) Pratima Puja i.e. worshipping God in the Icons (idols)
6) Yajna Puja i.e. worshipping God through performance of Yajna