The Royal Institution
Surface Area to Volume Ratios - Christmas Lectures with Philip Morrison
The mathematicians of Lilliput assumed that Gulliver would need 1728 times as much food as an individual Lilliput. Philip Morrison shows why this is not true, using surface area to volume ratios. Watch the full lecture:...
Curated Video
Introduction to Nanoparticles: Size, Properties, and Applications
This video explains what nanoparticles are and how their small size affects their physical and chemical properties, particularly in relation to their surface area-to-volume ratio. The video highlights potential applications of...
Bozeman Science
Environmental Matter Exchange
Paul Andersen explains how living organisms exchange matter with the environment. The importance of the surface area to volume ratio is emphasized using a simple mathematical model. The essential chemicals for life; water, carbon,...
Visual Learning Systems
Everyday Natural Resources Review
This video reviews the topics covered in the Everyday Natural Resources series. In this series, we explore different types of natural resources that we use in our daily lives. We distinguish between renewable and non-renewable resources,...
Curated Video
Transport of Substances in and out of Cells: Diffusion, Osmosis, and Active Transport
In this video, the concept of transport of substances into and out of cells is explained. The different ways in which this process occurs are discussed, including diffusion, osmosis, and active transport. The importance of surface area...
Amoeba Sisters
Inside the Cell Membrane
Explore the parts of the cell membrane with The Amoeba Sisters! Video discusses phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glycoproteins, and glycolipids - as well as why the surface area to volume ratio...
Curated Video
Agar Cube Diffusion
We use coloured agar cubes to see how different shapes change the rate of diffusion. The cubes are made using sodium hydroxide and phenolphthalein indicator to give them a pink colour. When these are added to hydrochloric acid, the...
Curated Video
What Is Adaptation? | Ecology & Environment | Biology | FuseSchool
What Is Adaptation? | Ecology & Environment | Biology | FuseSchool Learn about how organisms adapt to their habitats. "Adapting and Living Together" within the Ecology and Environment topic for school level biology. 00:00:06.560 --...
Curated Video
Adaptations Of Camels | Ecology & Environment | Biology | FuseSchool
Camels are specially adapted for life in the desert. Their body shape and physiology has adapted to suit the harsh environment. Over thousands and thousands of years, the environment has put extreme selection pressures on camels, and...
Curated Video
Prokaryotic vs Eukaryotic: The Differences | Cells | Biology | FuseSchool
In this video we have a look at the similarities and differences between prokaryotic and eukaryotic cells. All cells are either prokaryotic or eukaryotic. Organisms with prokaryotic cells are called prokaryotes, and organisms with...
Curated Video
Unicellular vs Multicellular | Cells | Biology | FuseSchool
Unicellular vs Multicellular | Cells | Biology | FuseSchool Did you know that some organisms exist of just one cell? These simple organisms, like amoeba, are unicellular. They depend on simple diffusion for life They are usually too...
FuseSchool
BIOLOGY - Cells - Prokaryotic vs Eukaryotic
In this video we have a look at the similarities and differences between prokaryotic and eukaryotic cells. All cells are either prokaryotic or eukaryotic. Organisms with prokaryotic cells are called prokaryotes, and organisms with...
Easy Languages
English Idiom Compared: An Arm and a Leg | Easy English 45
English Idiom Compared: An Arm and a Leg | Easy English 45 Easy Languages is an international video project aiming at supporting people worldwide to learn languages through authentic street interviews and expose the street culture of...
Let's Tute
Real Numbers: Irrational Numbers
In this video, the teacher explains the concept of rational and irrational numbers, and how to identify them using examples of integers, terminating decimals, and non-terminating repeating decimals. The teacher also shows how to prove...
TED-Ed
TED-Ed: What is the biggest single-celled organism? - Murry Gans
The elephant is a creature of epic proportions -- and yet, it owes its enormity to more than 1,000 trillion microscopic cells. And on the epically small end of things, there are likely millions of unicellular species, yet there are very...
Curated Video
GCSE Secondary Maths Age 13-17 - Geometry & Measures: Ratio of Volumes - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
SciShow
π 'N' Science
It's pi day! Hank explains why this irrational number is important to scientists, and discusses a bit of a controversy that surrounds it.
Curated Video
GCSE Secondary Maths Age 13-17 - Geometry & Measures: Similar Shapes - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
Writing Complex Sentences with Subordinating Conjunctions
In this video, the teacher explains the concept of complex sentences and how they can be used to clarify the relationship between ideas in writing. The teacher provides examples and guidance on using subordinating conjunctions to create...
Curated Video
The Pacific Flyer
How Richard Branson's team created the world's largest hot air balloon in order to undertake a daring crossing of the Pacific Ocean. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s...
Curated Video
Why Are Eggs Egg-Shaped?
The structural soundness of ovoids and the added properties that make them the ideal shape to hold life in the natural world. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s math films...
Curated Video
What's The Best Soup Can Size? Solved With Calculus!
A cylindrical can with volume V can be made in different ways. The cylinder can be wide and short (large radius and small height), or it can be narrower and taller (small radius and larger height). Which shape uses the least material?...
Krista King Math
Surface Area to Volume Ratio of Prisms
Increase pupil understanding of formulas as they apply surface area and volume calculations to determine ratios of different prism sizes. The examples include both a cube and rectangular prism.
PBS
Proportional Scaling
It is not as simple as scaling. MIT researchers explain that a micro engine cannot just be a proportional scaling of a working larger engine. The Math at the Core: Ratios resource compares the proportions involved with the surface area...