In this lesson, pupils will understand the concept of density and be able to explain its importance in calculating the mass of components. Pupils can define the melting point of metals and explain the meaning of Kelvin and Celsius. They can compare the melting points of some metals and explain that the technology of casting components from a metal with a high melting point is much more energy intensive.
It points out the usefulness of creating one’s own set of online materials and improving them by getting feedback from pupils. It also shows that the teacher should not take things for granted and should be able to assess pupils’ knowledge and skills.