ABSTRACT
This chapter associates the brightness of a lamp or the volume of a buzzer with the number and voltage of cells used in the circuit. It compares and provides reasons for variations in how components function, including the brightness of bulbs, the loudness of buzzers and the on/off position of switches. The chapter uses recognised symbols when representing a simple circuit in a diagram. It describes scientific procedures and clear instructions that outline the simple equipment required for carrying out each procedure. The chapter provides National Curriculum assessment indicators and illustrates how to carry out the primary science experiments and what results to expect. Suggestions for adapting each procedure or activity to the special needs and interests of the students are discussed.
