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Building Disciplinary Literacy in Science Using Authentic Texts- Organizer Paragraph - Karyotype
Building Disciplinary Literacy in Science Using Authentic Texts- Organizer Paragraph - Karyotype
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Building Disciplinary Literacy in Science Using Authentic Texts- Organizer Paragraph - Karyotype

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How can science teachers use complex text in engaging their students – which research supports is what increases test scores? This session has cross curricular significance. Our aim is to help …

How can science teachers use complex text in engaging their students – which research supports is what increases test scores? This session has cross curricular significance. Our aim is to help teachers increase student disciplinary literacy. We will show you how to incorporate authentic texts and model instructional processes to help develop your disciplinary literacy understanding. This would be an excellent way to foster discipline-specific literacy instructional processes, mainly for science teachers, but with extended applicability for social studies. the arts, as well as health and PE.

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  • 1. ClEv-R Graphic Organizer & Cl-Ev-R Paragraph C.Rudolph – 2013 – Graphic Organizer & Cl-Ev-R Paragraph (“Cl-Ev-R” terminology based on Explanation Analysis from Science Formative Assessment, Keeley 2008. Based on the C-E-R Framework, McNeil et al. 2011.) Complete the chart below. Use the chart to complete the ClEvR paragraph below: My karyotype shows a male/female fetus that has /does not have a genetic disorder. The evidence proves the fetus is male/female with ________________ syndrome because the data shows _________ sex chromosomes and ____________________________________________. The scientific reason for this claim is _______________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________. CLAIM: If the karyotype shows 22 pairs of chromosomes with either XX or XY sex chromosomes, then the baby will be a normal male or female. Any variation of this pattern shows a genetic disorder. RAW DATA FROM EXPT. OBSERVATIONS EVIDENCE SCIENCE VOCABULARY REASON  XX = female  one of the chromosomes comes from the mother & the other comes from the father  three #21 = trisomy 21 = Down’s syndrome three #21 indicates a nondisjunction occurred during meiosis  nondisjunctions are errors in meiosis  nondisjunctions can be detected on a karyotype when there is fewer or greater than 2 chromosomes at each location  meiosis involves sexual reproduction  in sexual reproduction the fetus gets half of its’ chromosomes from the mother & half from the father  A fetus can inherit a genetic syndrome from various chrsm. combinations created through meiosis
  • 2. ClEv-R Graphic Organizer & Cl-Ev-R Paragraph C.Rudolph – 2013 – Graphic Organizer & Cl-Ev-R Paragraph (“Cl-Ev-R” terminology based on Explanation Analysis from Science Formative Assessment, Keeley 2008. Based on the C-E-R Framework, McNeil et al. 2011.) If my karyotype showed the raw data in the chart above, then I could write something like this… My karyotype shows a male fetus that has a genetic disorder. The evidence proves the fetus is female with Down’s syndrome because the data shows XY sex chromosomes and three #21 chromosomes. The scientific reason for this claim is nondisjunctions are errors in meiosis and can be detected on a karyotype when there is fewer or greater than two chromosomes at each location. Meiosis involves sexual reproduction. In sexual reproduction the fetus gets half of its’ chromosomes from the mother and half from the father. The fetus can inherit a genetic syndrome from chromosome combinations created through meiosis. CLAIM: If the karyotype shows 22 pairs of chromosomes with either XX or XY sex chromosomes, then the baby will be a normal male or female. Any variation of this pattern shows a genetic disorder. RAW DATA FROM EXPT. OBSERVATIONS EVIDENCE SCIENCE VOCABULARY REASON  2 sex chromosomes - X & X  2 chromosomes (1 pair) for #1-20 and #22  three #21 chromosomes instead of two  XX = female  one of the chromosomes comes from the mother & the other comes from the father  three #21 = trisomy 21 = Down’s syndrome  three #21 indicates a nondisjunction occurred during meiosis  nondisjunctions are errors in meiosis  nondisjunctions can be detected on a karyotype when there is fewer or greater than 2 chromosomes at each location  meiosis involves sexual reproduction  in sexual reproduction the fetus gets half of its’ chromosomes from the mother & half from the father  A fetus can inherit a genetic syndrome from various chrsm. combinations created through meiosis

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