English National Curriculum - Science
Mission Objectives
Explain how bacteria reproduce and why their numbers can increase quickly
Calculate how many bacteria are produced over time using mean division time
Calculate the area of bacterial colonies or clear zones using πr²
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Words and meanings to learn
binary fission
a simple type of cell division used by bacteria where one cell divides into two identical daughter cells
inhibition zone
a clear area around an antibiotic disc where bacteria have not grown, showing how effective the antibiotic is
sterilise
to kill all microorganisms on equipment or culture media, usually by heating, to prevent contamination
aseptic technique
method used to prevent contamination when growing microorganisms, ensuring only the intended bacteria grow
mean division time
the average time it takes for one bacterial cell to divide into two, used to calculate population growth
Samantha is an accomplished science educator with over 15 years of leadership experience and a strong background in scientific analysis. She has a proven record of leading departments effectively, improving practice, and working collaboratively with stakeholders.
In her current work, Samantha embeds evidence-informed pedagogical principles such as retrieval practice, clear modelling, and effective sequencing to support high-quality curriculum design and professional development. She draws on assessment insight and common misconceptions to help teachers secure strong student understanding.
She is a former Head of Chemistry and Sixth Form Tutor at Ilkley Grammar School, with extensive Key Stage 4 and 5 experience, and an AQA examiner, giving her valuable insight into assessment standards and exam requirements.
In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket.
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