biology

Its that time of year again…The Double Helix Science Club

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The Double Helix Science Club is for young and inspiring scientists to explore science beyond our G7&8 science curriculum. It is for students that may have an interest in STEM (science, technology, engineering & mathematics) careers and for those that just what to do more hands on experiments.

The students will look at biology from the inside out by carrying out a frog dissection, make elephant toothpaste with chemistry and reach for the stars with bicarbonate rockets in physics.

 

When ASP Season 2  Mondays (different from day stated in video)

Max: 20  grade 7 &8 students 

Plus  2 or 3 grade 9-11 Sciecne Club Assistants

 

Please contact Mr. Gaynor for more information 

 

Welcome back to Senior School Science

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The Senior School Science Department extends a warm welcome to all returning and new students. We hope all students are well rested over the summer holiday and are excited about another inquisitive year learning Science.

We have been busy planning lessons, experiments, after school programmes and the Science Fair for the year ahead.

If you have any questions about this academic year please contact your child’s Science teacher or Mr. Gaynor: Head of the Senior School Science Department.

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






Immune System whiteboard Animation Videos

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The grade 9 biologists have started revision for the end of year exams. This week we reviewed the. Immune system by rewatching the whiteboard animation videos the students made earlier this year. 

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. 

How does energy flow through food chains? 

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The grade 9 biologists have started studying the final grade 9 biology topic on ecosystems and human influences. To model the flow of energy through food chains we roleplayed the transfer of water (energy) from a large bowl (the sun) to a number of cups with holes in them (trophic levels) to find out how much water (energy) passed to the end of the chain. We then evaluated how the roleplay was similar to. energy loss (loss of water) through food chains and how it could be improved (including the role of decomposers). The students left the lesson with a better understanding of the fundamental concept of how not all energy is passed on to the next trophic level and hence why there is a limit to the maximum number of trophic levels in a food chain. 

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. 

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