Showing posts with label traditional maths. Show all posts
Showing posts with label traditional maths. Show all posts

Tuesday, 13 December 2011

Traditional Architects



Did you know that in Bali, traditionally buildings were designed by making a miniature version? When I first visited the Green School in Bali, I met with John Hardy the owner. He told me that the huge buildings in the middle of the campus were made the traditional way. These buildings are made entirely out of bamboo. The buildings were designed by making a miniature version first. This is similar to how 5MJ is making a model of the Community Building for the Serpong Landfill.



You can see the real one being built in the background. At the Green School, the Grade 7 and 8 students are making their own clubhouse. You can see the photos on a Slideshare that I embedded just before this post. Notice the construction of the roof. The bamboo has to be close together to make sure that the grass on the roof can be tied down and made waterproof!!



Thursday, 10 November 2011

How Did People Measure Rice Fields in the Past?

Today we discussed how rice fields used to be measured. Ms Jane’s husband told her that in the Batak villages in North Sumatra the rice fields would be measured in depa.

One depa is the distance between your wrist and your elbow.

You measure by using string (raffia) and winding the string around your arm.
Cupak is used to measure the volume of rice. One cupak is one half coconut full of rice.

Did you know that your foot is approximately the length between your wrist and your elbow?