How Were Bikkurim Brought to the Temple?

One of the names of Shavuot in the Torah is the Festival of the First Fruits. These first fruits (bikkurim) are traditionally of the “seven species” – the special agricultural produce of the Land of Israel: wheat, barley, grapes, figs, pomegranates, olives, and dates (Deuteronomy 8:8).

How was Shavuot celebrated in the time of the temple, and how does this tradition compare with its modern Zionist interpretation?