Teaching our students how to measure temperatures off a thermometer and how to prevent parallax error is important. With this, we took a memory lane down to P4 topic, Heat & Temperature. Our main character is our humble salt. We want to prove that salt is an impurity and is able to change the melting/freezing point and boiling point of water. Our class was amazed to see the changes. Recording observations and concluding the experiment wraps up with what they have learnt in P4.
