IBDP

End of Year Exams: Review and Reflection Time.

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The most important part of the end of year exams is the time spent reviewing what went well and what students, and teachers can do to correct the gaps in the students understanding . Essentially closing the gaps in our students knowledge so they don’t make the same mistake again. 

This week we will spend most of the time in lessons reviewing the end of year exams and reflecting on our learning. SG

Creating whiteboard summary flashcards for end of year revision

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This week the grade 11 biologists made whiteboard summary flashcards on all subtopics studied this year. All the summaries were photographed and shared with the class. Students can review the pictures ona regular basis and test themselves on the content. This should help them prepare for the final end of year exams starting on Friday. SG






Introducing the Group 4 Project theme: Bad Science

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This year’s theme is Bad Science. To introduce this theme to the students the science department set up a number of stations highlighting everyday examples of Bad Science. Students moved station to station considering how each one was example of bad science and why many people believe it. The stations explored homeopathy, autism and vaccines, blood groups and personality, bad science in the media, climate change denial, everyday radiation levels, the science of successful names and the science behind food and health. 

The students were engaged and asked a number of thoughtful questions. They are well prepared to choose their own bad science topic and investigate it in detail. They will have 10 hours to work collaboratively on their topic and present their findngs to rest of grade 11. This implementation and presentation part of the group 4 project is scheduled for 15th and 16th June. 
 

Creating a dichotomous key to identify Grade 11 biologists shoes

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To model the use of dichotomous keys to identify closely related organisms in Biology; lhe grade level students created a key to identify their shoes. They focused on the clear physical characteristics which could be used to separate the pile of shoes. Once the key was complete everyone was happy to get their shoes back! The students then created a key to identify some closely related insect species.

Modelling Evolution through Natural Selection

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The grade 11 biologists followed up their research on the evidence for evolution by modelling Darwins theory of natural selection. They used different shaped tweezers, spatulas and test tube tongs to act as different beaks. They then competed for different food sources like rubber bands, paperclips, and rice grains the students understood the importance of variation in a population and how competition due to environmental selection pressure can lead to evolution. 

Evolution: The Greatest Show on Earth

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 This week in grade 11 biology we started to study topic 5: Evolution. We discussed the differences between facts and theories bringing in some thoughts from the Theory of knowledge coutse. We understood that theories are based on a vast amount of evidence and are our best scientific explanation for the real world phenomena we experience everyday. The students then researched the evidence from anatomy (homologous structures), paleontology (fossils), molecular biology (similarities between proteins and the universality of the genetic code), embryology and many other fields of biology. This topics recommended reading for students that want to learn more about the comprehensive evidence for evolution is Richard Dawkin’s The Greatest Show on Earth. 

Urine Analysis to identify possible disease and state of hydration

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The grade 11 HL students have been studying the role of the kidney in osmoregulation. In this lesson we discussed the role of antidiretic hormone (ADH) in fine tuning the final volume and concentration of the urine. We also looked at a number of urine samples and tried to match them to potential diseases ( diabetes, kidney damage) and states of hydration. 

Measuring the rate of photosynthesis using leaf discs

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In  IBDP Biology the students have to be able to plan experiments that measure the rate of photosynthesis.The students cut leaf discs from a plant and transferred them to a syringe filled with water. Once all the air was removed the leaf discs sunk to the bottom of the syringe. As the leaf discs carried out photosynthesis, they produced oxygen that moves into the air spsces surrounding the spongy mesophyll. The leaf discs will then rise as oxygen is produced. By measuring how long it takes for the leaf discs to rise; the rate of photosynthesis can be measured. 

How pregnancy test kits work 

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This week in grade 11 HL we have been studymg the production and applications of monoclonal antibodies. We discussed the use of monoclonal antibodies in new breast cancer treatments and their use in pregnancy test kits. The students can now explain why when only one line develops on the pregnancy test strip this is a negative result and why the development of two lines is a positive sign of pregnancy. SG

 

This youtube video gives a great overview of how herceptin is used to treat some forms of breast cancer.

 

Building a Growth Mindset

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At this week’s assembly, the Science Department introduced the importance of having a growth mindset to the Senior School. The key aspects of having a growth mindset such as focusing on effort, deliberate practice, responding positively to feedback and embracing challenges were explained. In addition, the neuroscience of the brain underpinning growth mindset was also presented.

To give a more visual demonstration of a growth mindset in action, 16 volunteers from across all grade levels were invited to the stage and attempted the learn to juggle challenge. There were many different starting levels and many balls were dropped!

The students will have 7 weeks to practice and refine their juggling skills through a growth mindset approach before they return to the assembly stage to show off their newly acquired circus skills!

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