Grade guide · Grade 9
Grade 9 in British Columbia: what your child learns this year
Grade 9 has 65 short lesson videos on Knowledge Made Fun across Mathematics and Science. Each lesson is about a minute long, follows the British Columbia curriculum and comes with a transcript. Two lessons play free without an account.
At home
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What a family can do with this grade today, without paying.
- Watch two Grade 9 lessons on the website without an account. Grade 9 lessons
- Sign in free, no payment and no card, to watch three lessons a day. Pick a lesson
- Draw and print graph paper, no account needed. Graph paper
- Put a timer, a name picker, dice, a noise meter or a scoreboard on the screen, no account needed. Classroom tools
Subject
Mathematics
34 lessons for Grade 9, by strand.
All Grade 9 Mathematics lessons
Number
- Negative Fractions and Decimals on a Number LineRational numbers: fractions and decimals below zero
- Adding and Subtracting Negative Fractions and DecimalsAdding and subtracting negative fractions and decimals
- Multiplying and Dividing Negative FractionsMultiplying and dividing negative fractions
- Order of operations with rational numbers and powers
- Powers: Base, Exponent and Repeated MultiplicationPowers: base, exponent and repeated multiplication
- Why (−3)² Is Not the Same as −3²Why (-3) squared is not the same as -3 squared
- Multiplying and Dividing Powers with the Same BaseMultiplying and dividing powers with the same base
- Power of a power, and power of a product or quotient
- Why any number to the power 0 is 1Why any number to the power zero is 1
Patterns and algebra
- Polynomials: Terms, Coefficients, Constants and DegreePolynomials: terms, degree, coefficients and constants
- Adding Polynomials by Collecting Like TermsAdding polynomials by collecting like terms
- Subtracting Polynomials: Change Every Sign in the Second BracketSubtracting polynomials: change every sign in the second bracket
- Multiplying a Polynomial by a MonomialMultiplying a polynomial by a monomial
- Dividing a Polynomial by a MonomialDividing a polynomial by a monomial
- Discrete or Continuous: When to Join the PointsDiscrete or continuous: when to join the points
- Graphing y = ½x + 2 and Reading Between the PointsGraphing a linear relation with fraction and decimal values
- Horizontal and vertical lines: y = 3 and x = −2Horizontal and vertical lines: y = 3 and x = -2
- Interpolating and extrapolating from a linear graphInterpolating and extrapolating from a graph
- Solving Equations with Brackets and Like TermsEquations with brackets and like terms
- Equations with the variable on both sides
- Equations with Fractions: Solve and CheckEquations with fractions: solving and checking
Geometry and measurement
- Scale Diagrams: Enlarging and Reducing with a Scale FactorScale diagrams: enlarging and reducing with a scale factor
- Reading a Map Scale: From Centimetres to KilometresScale diagrams: from a drawing to real measurements
- Similar triangles: same angles, sides in proportionSimilar triangles: matching sides are in the same ratio
- How Tall Is the Tree? Similar Triangles and ShadowsUsing similar triangles to find a missing length
Data and probability
- Population and sample: why we survey only some
- Ways to Choose a Sample, and Which Ones Are FairWays to choose a sample and which ones are fair
- Bias in a Survey: Leading Questions and Unfair SamplesBias in a survey: leading questions and unfair samples
- Misleading Graphs: Broken Axes and Stretched PicturesMisleading graphs: broken axes and stretched pictures
- Collecting Data Fairly: Privacy, Consent, Timing and CostCollecting data fairly: privacy, consent, cost and timing
Financial literacy
- Bank Accounts: Deposits, Withdrawals, Fees and the BalanceBank accounts: deposits, withdrawals, fees and the balance
- Simple Interest: I = PrtSimple interest: I = Prt
- A Monthly Budget: Income, Fixed Costs and Variable CostsA monthly budget: income, fixed costs and variable costs
- Save First or Borrow? The True Cost of a $600 BikePlanning a purchase: save first or borrow?
The full curriculum is on the Province's site.
Subject
Science
31 lessons for Grade 9, by strand.
Biology
- The cell cycle: growing, copying DNA and dividing
- The Stages of Mitosis: One Cell Becomes TwoMitosis: one cell becomes two identical cells
- Fission, budding and spores: reproducing without a partner
- Cloning and Grafting: Making Copies of Living ThingsCloning and grafting: making copies of plants and animals
- Meiosis: Making Sex Cells with Half the ChromosomesMeiosis: making cells with half the chromosomes
- Mitosis and Meiosis Side by SideMitosis and meiosis side by side
- Asexual or Sexual Reproduction: Fast Copies or New VarietySexual or asexual reproduction: speed versus variation
- Energy flow: how sunlight powers a food chain
- Bioaccumulation and Biomagnification: Toxins Up the Food ChainBiomagnification: how pollutants build up a food chain
Chemistry
- How the periodic table is organized: periods and groups
- Metals, Non-metals and MetalloidsMetals, non-metals and metalloids
- Chemical families: alkali metals, halogens and noble gases
- Atomic Size: Bigger Down a Group, Smaller Across a PeriodAtomic size: bigger down a group, smaller across a period
- Bohr Diagrams: Electrons in Shells and Valence ElectronsBohr diagrams: electrons in shells and valence electrons
- Ionic bonds: when atoms give and take electrons
- Covalent bonds: when atoms share electrons
- Naming Compounds and Writing Their FormulasNaming compounds and writing their formulas
Physics
- A Complete Circuit: Source, Load, Conductors and SwitchA complete circuit: source, load, conductor and switch
- Series and Parallel CircuitsSeries and parallel circuits
- Short Circuits: Why a Shortcut for Current Is DangerousShort circuits: why a shortcut for current is dangerous
- AC and DC: Two Ways Current Can FlowAC and DC: two ways current can flow
- Ohm's Law: V = I × ROhm's law: voltage, current and resistance
- Current or Voltage: What Makes Electricity Dangerous?Current or voltage: what makes electricity dangerous
Earth science
- How the Sun Drives Winds and Ocean CurrentsHow the sun drives winds and ocean currents
- The Sun Powers the Water CycleThe water cycle: how the Sun's energy moves water around Earth
- The Carbon Cycle: Sources and SinksThe carbon cycle: sources and sinks of carbon
- The Nitrogen Cycle: From Air to Living ThingsThe nitrogen cycle: how bacteria make nitrogen usable
- The Phosphorus Cycle: From Rock to Life and BackThe phosphorus cycle: a slow cycle through rock
- Dynamic equilibrium: balanced but always changing
- The Greenhouse EffectThe greenhouse effect
- How People Tip the Carbon BalanceHow people tip the carbon balance: fossil fuels and forests
The full curriculum is on the Province's site.
Every lesson on the site is listed under Lessons, and the pricing page says what is free and what Plus adds.