Outcomes

Pupils understand that thermal energy is transferred in three ways: conduction, convection
Pupils understand the process of evaporation as a decrease in thermal energy.

Specification References

4.6 recall that energy transfer may take place by conduction, convection and radiation

Emphasise to pupils that "cold" doesn't move - thermal energy always moves from higher concentration (hot objects) to lower concentration (cold objects). You can draw parallels with biological examples that they may be familiar with (e.g. osmosis).
Explain the processes of conduction, convection and radiation using heat transfers circus.
Show pupils demonstrations of conduction, convection and radiation.
Explain the process of evaporation as a decrease in average kinetic energy.

Wood/aluminium plates (identical in appearance) with ice cubes - one melts very quickly, one very slowly.
Rods of different metals (e.g. copper, aluminium) with embedded thermochromic thermometers (or alternatively, covered in wax) can show the progress of conduction.

Convection tubes; one with potassium permanganate and spirit burner; one with water and glitter.
Smaller convection tube with can be "operated" by heat from a pupil's hand.