1. Y13 Class Lessons 2017
Homeostasis

2. Thursday 2 February An introduction to Homeostasis
SLO: Define homeostasis and use an example to illustrate the big ideas.
What is homeostasis?
Work through example: Calcium in the body
Feedback loops: key terms
Feedback loops: toilet cistern example and questions
Examples of human feedback loops
Homework and keywords

3. Friday 3 February The homeostatic response to exercise
SLO: Describe the homeostatic response to exercise.
Homework: Set point, hyper and hypo
Feedback loops: key terms
Feedback loops: toilet cistern example and questions
Taking body measurements/exercise
Homework: keywords + Use one of the hyper/hypo systems to draw a feedback loop using the correct terminology.

4. Tuesday 7 February Human feedback loops
SLO: Explain the role of negative feedback in homeostatic responses.
Homework – sharing examples.
Exercise – finish collecting results/meaning.
Examples of human feedback loops.
Questions on human feedback loops.
Textbook - Read pgs and complete ‘Test your basics’.
Homework – For the week, work through workbook pgs

5. Thursday 9 February The role of negative feedback in homeostatic responses
SLO: Explain the role of negative feedback in homeostatic responses.
Homeostasis ppt – re-cap so far.
What exactly is negative feedback?
Definition and example.
What’s the difference between positive and negative feedback loops?
Control systems.
Drawing basic negative feedback loops – peer assessed.
Homework – keep working through workbook and revise keywords.

6. Friday 10 February The role of negative feedback – The Nervous System
SLO: Explain the role of negative feedback in homeostatic responses.
Watch ‘Homeostatic loops’ – re-cap.
‘Nervous communication’ ppt and notes.
‘Cold water survival’ – video.
Think-pair-share an example of a homeostatic response controlled by the nervous system.
Homework – keywords + write a description of a neural-based feedback system using as many as today’s new keywords as you can.