Biology Upper Secondary Teacher Guide - Department of Education

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BiologyMarking guide11.2: Carry out research on functions of liver and kidneys and their related diseases20 marksPerformanceCriteriaVery HighAchievement(18–20 marks)High Achievement(14–17 marks)SatisfactoryAchievement(10–13 marks)LowAchievement(0–9 marks)Title (2 marks) Clearly stated (2) Title stated (1-2) Inappropriate title(0-1)Introduction(3 marks)Clearly outline reasonsfor this research (3)Good reasons for this study outlined (2)Few reasonsstated or none(0-2)Content(10 marks)Detailed descriptions andillustrations of functionsand diseases of kidneyand liver (9-10)Descriptions and someillustrations of functionsand diseases of kidneysand livers (6-8)Fair descriptions offunctions anddiseases of kidneysand liver (4-5)Inadequatedescriptions offunctions anddiseases ofkidneys and liver(0-4)Level ofpresentation(5 marks)Neat presentationContent and cover pageprovidedNeat legible writing (5)Neat and presentableReadable writingContent and cover pageprovided (3-4)Neatly presented(2-3)Presentation lacksneatness (0-3)28
Upper Secondary Teacher Guide11.3 Transport SystemsThis unit will take 6–8 weeks. It is recommended that this unit be taught asoutlined.Suggested activitiesA range of activities can be used to support students to learn the content ofthis unit. Some are identified and elaborated below.• carry out experiments on movement of water through the stem of plants(pak choi, celery or similar plants), using eosin dye• research and describe structures and functions of the vascular bundle(xylem and phloem vessels)• carry out simple experiments on osmosis, diffusion and transpiration• observe and record the effects of osmosis on cells using visking ordialysis tubing• observe blood circulation in the transparent tail of a tadpole• measure pulses to compute average heart rate• dissect an animal heart (such as lamb) and observe different chambers,vessels, valves and so on• research the structure and function of the lymphatic system• research the diseases of the heart and problems related to the circulatorysystemElaboration of contentThe following table gives elaboration of some activities from the list above.ActivityObserve bloodcirculation in thetransparent tail of atadpoleMeasure pulses tocompute average heartrateElaborationStudents collect materials in group and set up experiment• Mount specimen on slide and observe under the microscope• Make careful observations on flow of blood in the tadpole’s tail and drawillustrations showing direction of blood flow• Discuss movement of blood in tadpoles and its relationship to othercirculatory systemsExplain what pulses are and demonstrate how a pulse is takenHave students grouped in pairs. Students then take turns to measure theirpulses at intervals after doing variety of activities.• Record the pulse readings and calculate average heart rate of each student• Discuss the importance of heart rates and the implications of circulatorydiseases on theseSuggested assessment taskDesign and carry out experiments on movement of water through the stemsof plants.29
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Biology Upper Secondary Teacher Guide - Department of Education

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