2. I learnt about a lesser known Singapore legend: Badang, the strong man. He used his great strength to help people: building houses, carrying heavy load and digging fresh water well. This story has good moral values: using our strength to help others.
3. The undecipherable ancient text on the Singapore stone. This fragment is part of the stone that Badang threw into the Singapore River during a contest of strength.
4. Infra-red LED remote control. Simple circuit that we could have done it. In this case, a Russian company did it and the Chinese manufactured it.