Science
Objectives

  • To describe that behaviour is coordinated by the nervous system

  • To explain how the brain recognises and responds to stimul

End Product

  • Draw a diagram of a brain and label parts called the cerebral hemisphere, cerebellum, medulla and pituitary gland. Explain how sensory and motor neurones travel from these area to send information about what you are doing at this precise second from your hands and eyes to your brain and back again.

Sensitivity and co-ordination - Task 15
  • Open a new document and title it “sensitivity and co ordination” you will use this to complete class work from today.
  • Put a sequence of events in order such as burning their hands on a hot saucepan. Then discuss with others n your table how they came to the decision
  • Ask your teacher about a practical called ‘feely bags’
  • Now you have looked at the power point presentation on nerve and reflexes try to Identify the density of nerve endings – working in pairs one of you is blindfolded while the other touches you on the back of the hand with either one or two pieces of blunt wire about 1cm apart mounted in a cork. The blindfolded student has to say whether it was one or two points that touched them.
  • Extension: You could investigate other areas of the body e.g. upper arm, back of neck etc.
  • What is the significance of the results? Is it touch, pressure or pain receptors that are being stimulated? Could this type of activity be modified for other receptors such as hot or cold receptors?
  • Does the colour smell right? – Conflicting information from odd combinations of colour and smell e.g. pink food smelling of peppermint, blue food smelling of strawberry. May trigger a discussion of how senses are used and that information come from more than one sense organ