Learn about heat transfer and how to keep things warm by testing the characteristics of different materials with this fun activity for kids. Some materials are good thermal conductors, easily letting heat pass through them, while others are good thermal insulators, not easily letting heat pass through them. Conduct experiments and watch how the temperature changes. Record your results on a table and make your own conclusions, some materials help keep things warm while others make them go cold quick. Find out if metal, cardboard and polystyrene are good at thermal insulation or have good thermal conductivity by checking out this heat transfer activity.