The largest pterosaurs like Quetzalcoatlus were closer in size to airplanes than birds. No flying animal alive today comes close to their huge size. So did giant pterosaurs actually fly? I went to see the fossil bones of the largest...

A look at what turbulence is (in fluid flow), and a result by Kolmogorov regarding the energy cascade of turbulence.

A look at what turbulence is (in fluid flow), and a result by Kolmogorov regarding the energy cascade of turbulence.

Diving under the Antarctic ice to get close to the much-feared leopard seal, photographer Paul Nicklen found an extraordinary new friend. Share his hilarious, passionate stories of the polar wonderlands, illustrated by glorious images of...

A look at what turbulence is (in fluid flow), and a result by Kolmogorov regarding the energy cascade of turbulence.

In this video Paul Andersen details the action potential in neurons. The resting potential of a neuron (-70mV) is maintained through differences in concentration and permeability of Na, K, and Cl ions. A graded potential is created as...

Paul Andersen explains the major plants structures. He starts with a brief discussion of monocot and dicot plants. He then describes the three main tissues in plants; dermal, ground and vascular. He also describes the plant cells...

So, electric current works like a river... kinda... Instead of flowing based on elevation, electric current works a little differently. But it's a good metaphor. In this episode of Crash Course Physics, Shini talks to us about electric...

Today, we continue our exploration of fluids and fluid dynamics. How do fluids act when they're in motion? How does pressure in different places change water flow? And what is one of the motion annoying things about filming outside on a...

Paul Andersen explains how nutrients and water are transported in plants. He begins with a brief discussion of what nutrients are required by plants and where they get them. He shows you dermal, vascular and ground tissue in monocot...

The cross sectional area of the drag force demonstrated.

Uncle Gobb and the Green Heads – Chapter 1, Part 4

A video entitled "Rectangular Prism Cross Sections" which shows the shape of various cross sections of the 3D figure.

Pupil outcome: I can produce cross-sectional drawings to show internal details. Key learning points: - Cross-sectional drawings help see inside objects by cutting them open on paper. - Cross-sectional drawings are used when important...

Pupil outcome: I can apply knowledge of trigonometric ratios to 3D problems. Key learning points: - If angles are involved, then you may wish to apply trigonometric ratios to the 3D problem - This allows you to calculate the angle...

Pupil outcome: I can apply knowledge of Pythagoras' theorem to 3D problems. Key learning points: - For packing efficiency, it can be useful to know the length of the longest diagonal - This would be from a bottom corner of a rectangular...

Pupil outcome: I can calculate the volume of a composite solid. Key learning points: - A composite solid can be decomposed to make the volume easier to calculate. - Completing the solid may be a more useful method. - Decomposing and...

Pupil outcome: I can appreciate that all prisms have two congruent polygonal parallel faces (bases) with parallelogram faces joining the corresponding vertices of the bases. Key learning points: - Prisms are 3D shapes with a...

Pupil outcome: I can calculate the volume of a cylinder. Key learning points: - A cylinder is not a prism but has a similar structure. - The formula for the volume of a cylinder can be derived by using the formula for a prism. - This can...

Pupil outcome: I can change the subject when a simple algebraic fraction is present in an equation or formula. Key learning points: - It is important to apply the inverse operations in the right order. - The subject can be thought of as...

Pupil outcome: I can interpret graphs that model real-life situations graphically. Key learning points: - Distance-time graphs can tell you about a journey. - By reading the graph, you can tell if there is mistake with it.

Pupil outcome: I can use the constant cross-sectional area property of cylinders to determine their volume. Key learning points: - A cylinder is not a prism but has a similar structure. - The formula for the volume of a cylinder can be...

Pupil outcome: I can use my enhanced knowledge of surface area and volume to solve problems. Key learning points: - The surface area of any solid can be calculated by a known method. - The volume of any solid can be calculated by a known...

Pupil outcome: I can form and solve equations involving complex shapes and solids. Key learning points: - There are a variety of approaches to calculations involving shapes. - There are many skills you will need, such as algebraic...