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81 narrated models

Lessons

A short narrated film for each idea. Choose a subject first, then play. The arithmetic stays on the practice.

NSW Physics Stage 6 (2017)

Physics

Only Physics

  1. Physics · 1

    3 scenes · 0:38

    Vector components

    Split a vector into two perpendicular parts, and combine those parts again.

    1. 1. Two arrows
    2. 2. The diagonal
    3. 3. Split and combine

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  2. Physics · 2

    3 scenes · 0:40

    Motion graphs

    Read a slope and an area as different quantities.

    1. 1. The axes
    2. 2. The slope
    3. 3. The area

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  3. Physics · 3

    3 scenes · 0:38

    Net force

    Add the forces on one object, keep a direction, then use F = ma.

    1. 1. Both forces
    2. 2. One net arrow
    3. 3. Direction, then F = ma

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  4. Physics · 4

    3 scenes · 0:42

    When a conservation law applies

    Use momentum or mechanical energy only when the law's condition is met.

    1. 1. The condition
    2. 2. An inside push
    3. 3. A different law

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  5. Physics · 5

    3 scenes · 0:39

    Projectile components

    Treat the horizontal and vertical motion of a projectile as two linked components.

    1. 1. One curve, two motions
    2. 2. Steady across
    3. 3. Changing up and down

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  6. Physics · 6

    3 scenes · 0:57

    Equations of motion

    Pick the equation that links what is known to what is asked, and keep one sign convention.

    1. 1. Five quantities
    2. 2. Choose the equation
    3. 3. One direction is positive

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  7. Physics · 7

    3 scenes · 0:54

    Forces on a slope

    Resolve the weight along and into a slope, then treat each direction on its own.

    1. 1. Weight points down
    2. 2. Split the weight
    3. 3. Each direction on its own

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  8. Physics · 8

    3 scenes · 0:54

    Work and kinetic energy

    Work is force along the displacement, and the net work changes the kinetic energy.

    1. 1. Force along the path
    2. 2. Only the part along
    3. 3. Work changes kinetic energy

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  9. Physics · 9

    3 scenes · 0:57

    Impulse and momentum

    A force acting for a time changes momentum, and the same change over a longer time needs a smaller force.

    1. 1. A force for a time
    2. 2. Longer time, smaller force
    3. 3. The area under the graph

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  10. Physics · 10

    3 scenes · 0:48

    Uniform circular motion

    In a circle at steady speed, the velocity is tangent and the net force points to the centre.

    1. 1. Velocity is tangent
    2. 2. Acceleration to the centre
    3. 3. Something supplies the force

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  11. Physics · 11

    3 scenes · 0:49

    Torque

    Torque is force times the perpendicular distance from the pivot, and balance means the torques cancel.

    1. 1. Where you push matters
    2. 2. Only the perpendicular part turns
    3. 3. Balance

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  12. Physics · 12

    3 scenes · 0:35

    Wave properties

    Relate frequency, wavelength and speed, and describe wave behaviour at boundaries.

    1. 1. Speed link
    2. 2. Boundaries
    3. 3. Describe

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  13. Physics · 13

    3 scenes · 0:44

    Thermodynamics

    Use heat, temperature and the first law to track energy in thermal systems.

    1. 1. Heat and temperature
    2. 2. Sensible heat
    3. 3. First law

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  14. Physics · 14

    3 scenes · 0:39

    Electrostatics

    Apply Coulomb’s law and electric field ideas to charges at rest.

    1. 1. Coulomb’s law
    2. 2. Electric field
    3. 3. Force and field

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  15. Physics · 15

    3 scenes · 0:38

    Circuit electricity

    Analyse series and parallel circuits with Ohm’s law and Kirchhoff’s rules.

    1. 1. Ohm’s law
    2. 2. Series
    3. 3. Parallel

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  16. Physics · 16

    3 scenes · 0:39

    Magnetism basics

    Describe magnetic fields and the force on a current-carrying conductor.

    1. 1. Poles and fields
    2. 2. Field of a wire
    3. 3. Force on a wire

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  17. Physics · 17

    3 scenes · 0:46

    Charged particles in fields

    Predict paths of charges in uniform electric and magnetic fields.

    1. 1. In an electric field
    2. 2. In a magnetic field
    3. 3. Crossed fields

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  18. Physics · 18

    3 scenes · 0:38

    Electromagnetic induction

    Use Faraday’s and Lenz’s laws for induced emf and current direction.

    1. 1. Flux
    2. 2. Faraday
    3. 3. Lenz

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  19. Physics · 19

    3 scenes · 0:38

    Nature of light

    Use wave and particle models of light, including diffraction and photoelectric ideas.

    1. 1. Wave model
    2. 2. Particle model
    3. 3. Both models

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  20. Physics · 20

    3 scenes · 0:35

    Special relativity

    Apply time dilation and length contraction for inertial frames.

    1. 1. Inertial frames
    2. 2. Time dilation
    3. 3. Length contraction

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  21. Physics · 21

    3 scenes · 0:39

    Atomic structure

    Use Bohr-model ideas for energy levels and spectral lines.

    1. 1. Energy levels
    2. 2. Ionisation
    3. 3. Spectra

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  22. Physics · 22

    3 scenes · 0:42

    Nuclear physics

    Balance nuclear equations and use binding energy and half-life ideas.

    1. 1. Nuclear equations
    2. 2. Half-life
    3. 3. Binding energy

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  23. Physics · 23

    3 scenes · 0:40

    Newton gravitation

    Use Newton’s inverse-square law and the gravitational field to find force, g and weight.

    1. 1. Inverse square
    2. 2. Gravitational field
    3. 3. Compare places

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  24. Physics · 24

    3 scenes · 0:44

    Kepler and orbital motion

    Apply Kepler’s third law and orbital speed to circular satellite motion.

    1. 1. Gravity holds the orbit
    2. 2. Kepler’s third law
    3. 3. Matching the day

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  25. Physics · 25

    3 scenes · 0:39

    Gravitational energy and escape

    Use gravitational potential energy, orbital energy and escape speed.

    1. 1. The potential well
    2. 2. Energy in a circle
    3. 3. Escape

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  26. Physics · 26

    3 scenes · 0:46

    Sound and superposition

    Use superposition, path difference and beats to explain sound and standing waves.

    1. 1. Beats
    2. 2. Path difference
    3. 3. Standing waves

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  27. Physics · 27

    3 scenes · 0:44

    Motors, generators and transformers

    Use the motor effect, induced emf and transformer ratios for motors, generators and transformers.

    1. 1. Motor
    2. 2. Generator
    3. 3. Transformer

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  28. Physics · 28

    3 scenes · 0:43

    The Big Bang and the Hertzsprung–Russell diagram

    Use Big Bang evidence and the Hertzsprung–Russell diagram to describe stars and the early universe.

    1. 1. Big Bang
    2. 2. HR diagram
    3. 3. Stars after the Bang

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  29. Physics · 29

    3 scenes · 0:39

    The Standard Model

    Use quarks, leptons and conservation laws to describe matter and allowed interactions.

    1. 1. Quarks
    2. 2. Leptons
    3. 3. Conservation

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NSW Mathematics Standard 2 (2024)

Maths Standard 2

Only Maths

  1. Maths · 1

    3 scenes · 0:39

    Formulae and equations

    Substitute into formulae and rearrange to change the subject.

    1. 1. Substitute
    2. 2. Rearrange
    3. 3. Check

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  2. Maths · 2

    3 scenes · 0:40

    Linear relationships

    Use gradient, intercept and linear models in context.

    1. 1. Gradient
    2. 2. Intercept
    3. 3. Linear model

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  3. Maths · 3

    3 scenes · 0:37

    Earning money

    Calculate wages, overtime, commission, tax and leave loading.

    1. 1. Normal pay
    2. 2. Overtime
    3. 3. Leave loading

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  4. Maths · 4

    3 scenes · 0:36

    Managing money

    Budget, compare costs and work with simple interest.

    1. 1. Simple interest
    2. 2. Budget
    3. 3. Unit price

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  5. Maths · 5

    3 scenes · 0:34

    Applications of measurement

    Use perimeter, area, volume, capacity and unit conversion in context.

    1. 1. Area and volume
    2. 2. Convert units
    3. 3. Capacity

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  6. Maths · 6

    3 scenes · 0:42

    Time and location

    Work with time zones, scales, bearings and location.

    1. 1. Time zones
    2. 2. Map scale
    3. 3. Bearings

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  7. Maths · 7

    3 scenes · 0:36

    Networks, paths and trees

    Read networks, find shortest paths and build spanning trees.

    1. 1. Read a network
    2. 2. Shortest path
    3. 3. Spanning tree

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  8. Maths · 8

    3 scenes · 0:35

    Data analysis

    Summarise data with measures of centre and spread, and read displays.

    1. 1. Centre
    2. 2. Spread
    3. 3. Displays

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  9. Maths · 9

    3 scenes · 0:39

    Algebraic relationships

    Model with simultaneous, quadratic and reciprocal relationships.

    1. 1. Simultaneous
    2. 2. Quadratic
    3. 3. Reciprocal

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  10. Maths · 10

    3 scenes · 0:40

    Investment and loans

    Use compound interest, reducing-balance loans and appreciation.

    1. 1. Compound interest
    2. 2. Reducing balance
    3. 3. Appreciation

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  11. Maths · 11

    3 scenes · 0:40

    Annuities

    Value regular deposits and withdrawals with compound interest.

    1. 1. Regular deposits
    2. 2. One payment
    3. 3. Before withdrawal

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  12. Maths · 12

    3 scenes · 0:41

    Trigonometry

    Solve right and non-right triangles with trig and bearings.

    1. 1. Right triangles
    2. 2. Non-right triangles
    3. 3. Bearings

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  13. Maths · 13

    3 scenes · 0:39

    Ratios and rates

    Work with ratios, rates, scale and unit pricing.

    1. 1. Ratios
    2. 2. Rates
    3. 3. Scale

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  14. Maths · 14

    3 scenes · 0:42

    Network flow

    Find maximum flow and cut capacity in a network.

    1. 1. Cuts
    2. 2. Maximum flow
    3. 3. Augmenting paths

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  15. Maths · 15

    3 scenes · 0:39

    Critical path analysis

    Find earliest and latest times, float and the critical path.

    1. 1. Project duration
    2. 2. Earliest times
    3. 3. Float

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  16. Maths · 16

    3 scenes · 0:36

    Bivariate data analysis

    Describe association, fit a line and interpolate carefully.

    1. 1. Association
    2. 2. Line of best fit
    3. 3. Careful reading

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  17. Maths · 17

    3 scenes · 0:35

    Relative frequency and probability

    Estimate probability from relative frequency and combine events.

    1. 1. Relative frequency
    2. 2. Complement
    3. 3. Independent events

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  18. Maths · 18

    3 scenes · 0:37

    The normal distribution

    Use mean, standard deviation and z-scores on a normal model.

    1. 1. Normal model
    2. 2. z-scores
    3. 3. Empirical rule

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  19. Maths · 19

    3 scenes · 0:40

    Further measurement

    Approximate area under a curve with Simpson’s rule and related measurement ideas.

    1. 1. Equal strips
    2. 2. Four and two
    3. 3. Sense check

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NSW Engineering Studies Stage 6 (2011)

Engineering Studies

Only Engineering

  1. Engineering · 1

    3 scenes · 0:58

    The engineering profession

    Name the work of engineers, the fields they practise in, and what counts as current innovation.

    1. 1. The work
    2. 2. The engineer
    3. 3. In Australia

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  2. Engineering · 2

    3 scenes · 0:58

    History, people and materials

    Link historical engineering change to materials choices and effects on people’s lives.

    1. 1. Materials over time
    2. 2. People’s lives
    3. 3. Environment

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  3. Engineering · 3

    3 scenes · 0:56

    Mass, force and vectors

    Treat mass as scalar, force as vector, and add perpendicular components.

    1. 1. Mass and force
    2. 2. Components
    3. 3. Resultant

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  4. Engineering · 4

    3 scenes · 0:48

    Simple machines

    Use levers, inclines, screws, wheel and axle, pulleys and gears, with MA, VR and efficiency.

    1. 1. The family
    2. 2. Efficiency
    3. 3. Gears and ramps

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  5. Engineering · 5

    3 scenes · 0:52

    Structure and properties of materials

    Classify materials and connect atomic bonding and crystal structure to physical and mechanical properties.

    1. 1. Bonding
    2. 2. Structure
    3. 3. Selection

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  6. Engineering · 6

    3 scenes · 0:51

    Metals and forming processes

    Distinguish ferrous and non-ferrous metals and match casting, rolling, extruding, cutting, joining and fabricating to a use.

    1. 1. Ferrous and not
    2. 2. Processes
    3. 3. Fit to use

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  7. Engineering · 7

    3 scenes · 0:46

    Polymers, ceramics and composites

    Tell thermo-softening from thermosetting polymers, name engineering ceramics, and use timber and concrete as composites.

    1. 1. Polymers
    2. 2. Ceramics
    3. 3. Year 11 composites

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  8. Engineering · 8

    3 scenes · 0:51

    Graphics, teams and reports

    Read third-angle orthogonal drawing, sketch pictorially, work in a team, and outline an Engineering Report.

    1. 1. Third angle
    2. 2. The report
    3. 3. Teams and CAD

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  9. Engineering · 9

    3 scenes · 0:58

    Forces, free bodies and moments

    Add coplanar forces, draw a free-body diagram, and take moments for equilibrium.

    1. 1. Free bodies
    2. 2. Moments
    3. 3. Solve

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  10. Engineering · 10

    3 scenes · 0:53

    Modifying and recycling materials

    Use work hardening, heat treatment and alloying to change properties, and weigh recycling of engineered products.

    1. 1. Modify
    2. 2. Recycle
    3. 3. On a product

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  11. Engineering · 11

    3 scenes · 1:00

    Electricity, motors and safety

    Use voltage, current and simple circuits, distinguish AC from DC, and explain induction motors with Australian electrical safety.

    1. 1. Ohm and circuits
    2. 2. AC, DC, induction
    3. 3. On a product

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  12. Engineering · 12

    3 scenes · 0:59

    Braking systems in society

    Trace band, drum, disc, ABS, regenerative and handbrake systems and their social and environmental effects.

    1. 1. From band to ABS
    2. 2. Lives and environment
    3. 3. The brake report

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  13. Engineering · 13

    3 scenes · 0:59

    Friction, stress and hydraulics

    Calculate static friction, stress and strain, and apply Pascal’s principle to a brake circuit.

    1. 1. Static friction
    2. 2. Stress and strain
    3. 3. Pascal

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  14. Engineering · 14

    3 scenes · 0:55

    Brake materials and tests

    Choose steels, cast irons and friction composites, then describe tensile, compression and hardness tests.

    1. 1. Steels and irons
    2. 2. Friction composites
    3. 3. Tests

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  15. Engineering · 15

    3 scenes · 0:53

    Biomedical engineering as a profession

    Describe the biomedical engineer’s work, ethics, safety, training and the full Engineering Report on that profession.

    1. 1. The profession
    2. 2. Ethics and safety
    3. 3. The focus report

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  16. Engineering · 16

    3 scenes · 1:00

    Biomedical mechanics, materials and electronics

    Solve lever problems, justify stainless steel, titanium, polymers and ceramics, and apply Ohm’s law and simple digital logic.

    1. 1. Levers in the body
    2. 2. Implant materials
    3. 3. Ohm and logic

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  17. Engineering · 17

    3 scenes · 0:55

    Civil structures in history and society

    Place bridges, dams and buildings in historical materials change and judge social and environmental impact.

    1. 1. The set
    2. 2. Society and environment
    3. 3. Application report

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  18. Engineering · 18

    3 scenes · 0:58

    Pin-jointed truss analysis

    Find reactions, then member forces by the method of joints or the method of sections.

    1. 1. Pin-jointed
    2. 2. Joints
    3. 3. Sections

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  19. Engineering · 19

    3 scenes · 1:05

    Graphical methods for pin-jointed trusses

    Letter a space diagram with Bow’s notation, build a scaled force polygon, and read member forces as tension or compression.

    1. 1. Space diagram
    2. 2. Force polygon
    3. 3. Read the diagram

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  20. Engineering · 20

    3 scenes · 0:54

    Shear, bending and outer-fibre stress

    Draw shear force and bending moment diagrams for point loads and calculate bending stress when I is given.

    1. 1. Shear and moment
    2. 2. Outer fibre
    3. 3. Diagrams

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  21. Engineering · 21

    3 scenes · 0:54

    Stress, strain and factor of safety

    Use Hooke, Young’s modulus, yield, proof stress, toughness and factor of safety, and read a stress–strain diagram.

    1. 1. Hooke and Young
    2. 2. The curve
    3. 3. Factor of safety

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  22. Engineering · 22

    3 scenes · 1:02

    Civil materials, cracking and corrosion

    Justify concrete, timber, glass, bricks, geotextiles and laminates, and control cracking and corrosion.

    1. 1. Ceramics and composites
    2. 2. Cracks and rust
    3. 3. Tests and recycle

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  23. Engineering · 23

    3 scenes · 0:58

    Transport, energy and the environment

    Link historical change in personal and public transport to energy use and environmental impact.

    1. 1. Change
    2. 2. Energy and environment
    3. 3. The other application report

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  24. Engineering · 24

    3 scenes · 1:03

    Friction, energy and transport machines

    Solve static friction, angle of repose, work, kinetic and potential energy, power, MA, VR and efficiency.

    1. 1. Friction again
    2. 2. Work, energy, power
    3. 3. Machines in vehicles

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  25. Engineering · 25

    3 scenes · 0:50

    Heat treatment and metal manufacture

    Choose annealing, normalising, hardening and tempering, and match forging, rolling, casting, extrusion, powder forming and welding to a transport part.

    1. 1. Heat treatment
    2. 2. Ferrous processes
    3. 3. Glass, polymers, tests

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  26. Engineering · 26

    3 scenes · 0:52

    Transport electricity and control

    Describe generation, motors, speed control, control technology and electrical safety in transport.

    1. 1. Supply and circuits
    2. 2. Motors and control
    3. 3. Sectioned drawings

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  27. Engineering · 27

    3 scenes · 1:06

    Aeronautical engineering as a profession

    Describe the aeronautical profession in Australia, safety, ethics, unique technologies and the Engineering Report.

    1. 1. The profession
    2. 2. Flight in Australia
    3. 3. The focus report

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  28. Engineering · 28

    3 scenes · 0:54

    Flight mechanics and Bernoulli

    Resolve lift, weight, thrust and drag, use lift-to-drag and angle of attack, and apply Bernoulli to lift and a venturi.

    1. 1. Four forces
    2. 2. Bernoulli
    3. 3. The lift equation

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  29. Engineering · 29

    3 scenes · 0:48

    Propulsion, pitot and airframe bending

    Compare piston, turbofan, ramjet, scramjet, turboprop and rocket propulsion, and use Pascal, pitot and altimeter ideas.

    1. 1. Propulsion
    2. 2. Pitot and Pascal
    3. 3. Airframe bending

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  30. Engineering · 30

    3 scenes · 0:48

    Aircraft materials, NDT and corrosion

    Justify aluminium alloys, thermosets and fibre composites, and choose dye-penetrant, X-ray, ultrasonic or magnetic-particle tests.

    1. 1. NDT
    2. 2. Aluminium and composites
    3. 3. Corrosion and drawings

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  31. Engineering · 31

    3 scenes · 0:54

    Telecommunications as a profession

    Describe the telecommunications profession, historical change from telegraph and CRT television to current systems, and the Engineering Report.

    1. 1. The profession
    2. 2. From telegraph to CRT
    3. 3. The other focus report

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  32. Engineering · 32

    3 scenes · 0:56

    Copper, semiconductors and fibre

    Select copper alloys, semiconductors, polymer insulation and optical fibre, and name voltage, insulation and signal tests.

    1. 1. Copper and semiconductors
    2. 2. Polymers and fibre
    3. 3. Select

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  33. Engineering · 33

    3 scenes · 1:21

    Telecom systems and digital logic

    Contrast analogue and digital, modulation, radio, digital television, telephony, transmission media, satellites and AND, OR, NAND, NOR gates.

    1. 1. Analogue, digital, modulation
    2. 2. TV, telephony, satellites
    3. 3. Logic and bands

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