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Topic development in science – a model

Topic development in science – a model. Learning intentions. That lesson plans are derived from curriculum objectives That Cluster Specification objectives provide a basis for refining Learning intentions or Performance Criteria

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Topic development in science – a model

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  1. Topic development in science – a model

  2. Learning intentions • That lesson plans are derived from curriculum objectives • That Cluster Specification objectives provide a basis for refining Learning intentions or Performance Criteria • That prescribed assessment criteria must be considered when planning units of work • That the assessment is fair

  3. Grade 12 biology foundation curriculum standard 9: Understand physiological regulatory systems of mammals Breakdown of standards: e.g video showing range of ways in which animals detect potential dangers Demonstrations: • germination in broad beans • etiolation in mustard/watermelon seeds (p344) • state there is a hormonal basis(no details), advantages of response (Advanced 10.1) (p 344) • negative geotaxis & phototaxis in snails ….

  4. Learning intentions: • That living thingsrespond to a range of stimuli • Stimuli may be both biotic and abiotic • That plants respond to (e.g.) temperature, light intensity, consumers, competitors (in specific ways), with examples. • That animals respond to predators, prey, other members of the same species, (in specific ways), with examples. • …. (Keywords)

  5. How does the teacher interpret these statements?

  6. Describe the process Learning intentions: • That homeostasis refers to the maintenance of a constant internal environment • That mammals are homeotherms • That examples of factors being controlled include: temperature, tonicity, glucose levels, dissolved gases • That a toilet cistern is a mechanical example of a feedback mechanism • That receptors detect stimuli • That effectors bring about a response • … Demonstration: • The toilet cistern • Water bath – either manual control of temperature, or using a thermostat (p 310) Learning intentions: • That a feedback mechanism consists of receptors and effectors, a control centre and a feedback loop. • That the control of blood sugar levels involves the following components… • …

  7. Designing the questions Question 1 (9.1): Seedlings kept in darkness grow spindly as shown in the photograph below: Provide a clear explanation of this behavior The best explanation for this response is that: • The seedlings are trying to reach the sun as fast as possible • There is a mineral in the soil which causes rapid growth • A hormone is secreted that causes stem cells to elongate • These are hybrid seeds which have been selected for rapid growth (1 mark)

  8. Question 5 (9.3): The diagram below shows a cross section of human skin: Describe thermoregulation Clearly label two structures involved with the control of body temperature. (2 marks)

  9. Checklist: Do we understand how to go about the following… • How to derive lesson plans from curriculum objectives • Using Cluster Specification objectives to provide a basis for refining Learning intentions or Performance Criteria (success criteria) • Keeping the prescribed assessment criteria in mind when planning units of work • Producing a fair assessment, with a balanced mark allocation

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