English National Curriculum - Science
Mission Objectives
Define active transport and explain how it differs from diffusion and osmosis
Describe real-life examples of active transport in plants and animals
Compare the three transport processes using key features (direction, concentration gradient, energy)
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Words and meanings to learn
diffusion
The net movement of particles from an area of high concentration to an area of low concentration, down the concentration gradient. It is a passive process (no extra energy needed).
osmosis
The diffusion of water from an area of higher water concentration to an area of lower water concentration, through a partially permeable membrane.
concentration gradient
the difference in concentration between two areas. The steeper the gradient, the faster the rate of diffusion or osmosis.
mineral ions
a charged particle (ion) of a mineral, such as nitrate, magnesium, or phosphate, that plants absorb from the soil and use for healthy growth
active transport
The movement of particles against a concentration gradient, requiring energy.
Samantha is an accomplished science educator whose current work centres on curriculum design and professional development, supporting teachers to deliver high-quality science education through evidence-informed approaches. She is a former Head of Chemistry and Sixth Form Tutor with extensive Key Stage 4 and 5 experience, and has worked as an AQA examiner, giving her valuable insight into assessment standards and what students need to succeed.
Samantha has written the complete KS4 Science curriculum, fully aligned with the AQA GCSE Science: Trilogy specification. Covering biology, chemistry and physics, the curriculum is carefully sequenced so that students build knowledge cumulatively and see clear connections between concepts across the three sciences. Drawing on her experience as an examiner and on research into effective teaching, she has designed it to embed retrieval practice, clear explanation, worked examples and the required practicals throughout, preparing students for the demands of the GCSE exams. Grounded in the realities of the classroom, the curriculum is rigorous for students and manageable for busy teachers.
In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket.
PowerPoint slides or transport process comparison diagrams
Table completion worksheet (diffusion vs osmosis vs active transport)
Video clip or animation of active transport (root hair cells or gut cells)
Coloured arrows for particle model diagrams. Student can draw these on.
Challenge and stretch questions or Venn diagram comparison
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Mission assignment film
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