Grade 4s started the year with an Open Minds field trip to Sungei Buloh Wetland Reserve, Bukit Timah Nature Reserve and Labrador Park. Students used simple scientific instruments like hydrometers and temperature gauges to investigate how living and non-living things are interconnected within an ecosystem. Through their observations, they learned about the rich biodiversity these environments have to offer. Crocodiles, monitor lizards and crabs were among the interesting creatures observed that day.