A typical classroom is composed of different kinds of learners. There are those who grasp concepts immediately, those who learn gradually and there are those who learn through experimentation.
Learning concepts in an interesting manner is always fun! Children can try this experiment and learn the concept of surface tension.
Salt lowers the melting point of water. So, in the glass of water, the ice started to melt and simultaneously started to refreeze. This caused the ice cube to melt around the string and freeze around it, trapping the string inside.
Adhesive tape can help repair anything from handbags to heels. Transparent tape helps to patch mobile phone screens, textbook covers, etc.
Teachers can introduce the concept of conductors to the children in class, with this engaging experiment.
In this age of instant gratification, it is sometimes difficult to make people understand the wisdom of age-old practices which can prevent and heal many diseases.