The 4th and 5th graders conducted the experiments in each science class. For the 4th grade, the students investigated how heat transmit through materials in the unit of “How things are heated”. For the 5th grade, they experimented on the way to extract dissolved substances from water solutions in the unit of “How Things Dissolve”. The science experiments became complicated and they started using chemicals and fire equipment. They all looked very serious while conducting experiments. The students were able to experience the process coming up with questions, making their own predictions, and testing them through their experiments. It will really contribute to developing student’s thinking ability.