2 min 10 sLessons · Grade 9 · Mathematics
Grade 9 Mathematics lessons
34 short narrated lessons for Grade 9 Mathematics in British Columbia's curriculum, in the order the curriculum lists them. Each page has the lesson's full transcript, where it fits, and practice questions on lessons that have them. Two lessons are free to watch on the website without an account; signing in is free, no payment and no card.
Strand
Number
9 lessons
- 2 min 10 s
1 min 59 sAdding and Subtracting Negative Fractions and Decimals
1 min 59 s · BC9-MA-02
1 min 48 sMultiplying and Dividing Negative Fractions
1 min 48 s · BC9-MA-03
1 min 57 sOrder of operations with rational numbers and powers
1 min 57 s · BC9-MA-04
1 min 50 sPowers: Base, Exponent and Repeated Multiplication
1 min 50 s · BC9-MA-05
2 min 1 sWhy (−3)² Is Not the Same as −3²
2 min 1 s · BC9-MA-06
2 min 7 sMultiplying and Dividing Powers with the Same Base
2 min 7 s · BC9-MA-07
2 min 20 sPower of a power, and power of a product or quotient
2 min 20 s · BC9-MA-08
2 min 6 sWhy any number to the power 0 is 1
2 min 6 s · BC9-MA-09
Strand
Patterns and algebra
12 lessons
1 min 58 sPolynomials: Terms, Coefficients, Constants and Degree
1 min 58 s · BC9-MA-10
2 minAdding Polynomials by Collecting Like Terms
2 min · BC9-MA-11
2 min 6 sSubtracting Polynomials: Change Every Sign in the Second Bracket
2 min 6 s · BC9-MA-12
2 min 13 sMultiplying a Polynomial by a Monomial
2 min 13 s · BC9-MA-13
2 min 11 sDividing a Polynomial by a Monomial
2 min 11 s · BC9-MA-14
1 min 57 sDiscrete or Continuous: When to Join the Points
1 min 57 s · BC9-MA-15
2 min 2 sGraphing y = ½x + 2 and Reading Between the Points
2 min 2 s · BC9-MA-16
2 min 1 sHorizontal and vertical lines: y = 3 and x = −2
2 min 1 s · BC9-MA-17
2 min 4 sInterpolating and extrapolating from a linear graph
2 min 4 s · BC9-MA-18
2 min 19 sSolving Equations with Brackets and Like Terms
2 min 19 s · BC9-MA-19
2 min 14 sEquations with the variable on both sides
2 min 14 s · BC9-MA-20
2 min 11 sEquations with Fractions: Solve and Check
2 min 11 s · BC9-MA-21
Strand
Geometry and measurement
4 lessons
2 min 8 sScale Diagrams: Enlarging and Reducing with a Scale Factor
2 min 8 s · BC9-MA-22
1 min 57 sReading a Map Scale: From Centimetres to Kilometres
1 min 57 s · BC9-MA-23
2 min 4 sSimilar triangles: same angles, sides in proportion
2 min 4 s · BC9-MA-24
2 min 6 sHow Tall Is the Tree? Similar Triangles and Shadows
2 min 6 s · BC9-MA-25
Strand
Data and probability
5 lessons
2 min 3 sPopulation and sample: why we survey only some
2 min 3 s · BC9-MA-26
1 min 59 sWays to Choose a Sample, and Which Ones Are Fair
1 min 59 s · BC9-MA-27
1 min 47 sBias in a Survey: Leading Questions and Unfair Samples
1 min 47 s · BC9-MA-28
1 min 59 sMisleading Graphs: Broken Axes and Stretched Pictures
1 min 59 s · BC9-MA-29
1 min 50 sCollecting Data Fairly: Privacy, Consent, Timing and Cost
1 min 50 s · BC9-MA-30
Strand
Financial literacy
4 lessons
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