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The four basic arithmetical operations
Lesson
Order of operations
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Rounding and estimates
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Multiplication with negative numbers
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Multiplication with decimal numbers
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Multiplication with fractions
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Multiplication and division by 10
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Divisibility
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Division with fractions
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Division with negative numbers
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Division with decimal numbers
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Introduction to negative numbers
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Addition and subtraction with negative numbers
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Multiplication with negative numbers
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Division with negative numbers
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The positional system with base 10
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Rational numbers
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SI units
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Prefixes
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Common measurement units and conversions
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Weight, mass, and volume
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Measurements: Density
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Time: Calculations around the clock
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The four basic arithmetical operations
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Rounding and estimates
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Fractions and decimals
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Expanding and reducing fractions: Introduction
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Expanding and simplifying fractions: More examples
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Comparing fractions with different denominators
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The lowest common denominator
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Multiplication with fractions
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Division with fractions
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Divisibility
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Prime numbers: Rectangular numbers
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Prime numbers: Factorisation
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Introduction to exponents
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Powers of ten
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Scientific notation
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Square roots
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Algebraic expressions
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Working with algebraic expressions: Introduction
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Working with algebraic expressions: Examples
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Multiplication with parentheses
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Squaring the binomial
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A minus sign before a parenthesis
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Introduction to equations
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Solving equations using the index finger method
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Solving equations using the balancing method
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Writing equations
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Solving quadratic equations using the zero product method
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Angles
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The angles of a triangle
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The perimeter of a triangle
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The area of a triangle
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The geometry of quadrilaterals
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The perimeter of a quadrilateral
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Squares and rectangles
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Other quadrilaterals
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The circumference of a circle
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The area of a circle
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The area and perimeter of a circular sector
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Calculating the area of a complex shape
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The perimeter of a polygon
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Rounding and estimates
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Cubes and cuboids
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The surface area of a cube and a cuboid
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Prisms
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Cylinders
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The surface area of a cone
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Scale
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Area scale and volume scale
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Angles
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Constructing angles and bisectors without protractor
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Constructing triangles
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Constructing quadrangles
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Building polyhedrons
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Introduction to percent
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Whole, half, quarter, fifth and tenth
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Fractions, decimal numbers and percent
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Part, portion and percentage
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The coordinates of a point
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The slope of a line
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Linear equation with a constant term
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Linear equations
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Other forms of linear equations
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Linear equation systems
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Time: Calculations around the clock
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From Aristotle to classical physics
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From classical to modern physics
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The scientific method – physics
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Measurements
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Measurements
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Measurements: Density
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SI units
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Time: Calculations around the clock
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Forces
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Mass and gravity
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Velocity and displacement
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Newton's third law of motion
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Mass and gravity
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Matter
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Investigating and comparing materials
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Elasticity and plasticity
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Mass and gravity
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Thermal conductivity of metals
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Gas: Pressure, volume, and temperature
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Heat and phase transitions
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Diffusion
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The electrochemical series
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Characteristics of solids, liquids and gases
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Heat and phase transitions
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Plasma
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Heat in everyday life
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What is temperature?
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Ways to measure temperature
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Heat transfer: Convection, conduction and radiation
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Thermal expansion and its applications
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Thermal insulation
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Pressure [replacing lesson: Pressure]
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Pressure in liquids
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Pressure in liquids [replacing lesson Pressure in liquids]
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Communicating vessels
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Hydraulics
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Pressure in gases
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Pressure in gases [replacing lesson "Pressure in gases"]
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Pressure measuring devices
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Units of pressure
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Density
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Static electricity
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Measuring charge
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Conductors and insulators
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Electrical circuits
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Circuits in series and in parallel
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Magnets
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Renewable energy sources
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Reflection and transparency
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Concave and convex reflection
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Refraction of light: Introduction
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Refraction of light: Total internal reflection
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Cameras
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Camera obscura and pinhole camera
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Solar and lunar eclipses
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Solar and lunar eclipses
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Everything is chemistry – almost
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The history of chemistry
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Matter
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Everything is made of atoms
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Chemistry deals with the properties of substances
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The chemistry lab
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Laboratory apparatus
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Heat sources in the science lab
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Scientific method – chemistry
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Everything is made of atoms
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Atoms can attach to each other
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Properties of materials
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Heat and phase transitions
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Sublimation and deposition
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The particle theory of matter
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Atoms can attach to each other
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Mixtures and compounds
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Homogeneous and heterogeneous mixtures
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Immiscible liquids and emulsions
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Separation of mixtures
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More ways to separate mixtures
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Fractional distillation
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Physical and chemical change
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Chemical reactions: Chemical equations
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Chemical equations: Balancing chemical equations
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Ways to represent chemical reactions
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Acids
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Bases
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Acidic, alkaline and neutral solutions
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The pH scale
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Combustion: Complete and incomplete
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Water
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The chemical properties of water
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Hydrogen
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Oxygen
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Oxygen reactivity series
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Extraction of metal from metal oxides
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Composition of air
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Nitrogen
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Oxygen
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Nitrogen
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Water supply and quality
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Corrosion and rust
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Ways to prevent rust
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Extraction of metal from metal oxides
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Oxidation and reduction
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Hydrocarbons
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Air quality and pollution
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Properties of materials
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What is biology?
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What is Biochemistry?
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The history of biology
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The scientific method – biology
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Characteristics of living things
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Optical microscopes
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The scientific method – biology
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The plant cell
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The animal cell
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Cell specialisation
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Diffusion
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Osmosis
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Introduction to nutrition
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Interaction among species
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Interaction among species: Lakes
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From seed to tree
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Photosynthesis
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Photosynthesis [replacing the lesson: Photosynthesis]
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Structure of a flowering plant leaf
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Animal teeth
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Digestion: From the mouth to the stomach
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Digestion: The intestines
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Organs and organ systems
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Tissue
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Teeth
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Carbohydrates in food
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Carbohydrates in food [replacing lesson: Carbohydrates in food]
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Simple sugars
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Compound sugars
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Proteins in food
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Amino acids build proteins
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Biochemistry: Enzymes
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Fats in food
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Vitamins
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Minerals
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Bacteria
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Viruses
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Coronaviruses and COVID-19
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Infection
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Water in the human body
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Biochemistry: Enzymes
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Human energy requirements
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Introduction to taxonomy
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Taxonomy: Plants
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Taxonomy: Animals
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Taxonomy: Fungi and protists
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Fungi
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Euglena, Paramecium and Amoeba
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Coronaviruses and COVID-19
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