This is part 3. Check Part 1 and 2
As part of my son's homeschooling activity, he requested to experience, first hand, how early Filipinos lived - particularly my tribe, the Igorots. So he tried pounding rice, cutting bamboos using bolo and cooking rice in a bamboo instead of a pot.
Part 1 is mostly about threshing out the grains from the rice stalk. The second part involves pounding it further to remove the chaff or rice hull.
Part 3 , what is interesting here is using winnower to remove the chaff.