- JS: Animation
- JS: Arrays
- JS: Coloring
- JS: Drawing
- JS: Functions
- JS: Interactive Programs
- JS: Logic and if statements
- JS: Looping
- JS: Object-Oriented Design
- JS: Objects
- JS: Resizing with variables
- JS: Text and strings
- JS: Variables
- Johnny
- Journeyman Algebraist
- Journeyman Arithmetician
- Journeyman Pre-algebraist
- Journeyman Trigonometrician
- Just Getting Started
- K-8th grade
- KACP Challenge Council
- KA Content Template
- KVL in the frequency domain
- Kepler
- Khan Academy
- Khan Academy Computing Coach Resources
- Khan Academy Wiki
- Kindergarten (U.S.) Math Mission
- Kirchhoff's current law
- Kirchhoff's laws
- Kirchhoff's voltage law
- Knowledge Games Growth Mindset
- Knowledge Map
- L'Hopital's rule
- LASD Pilot
- LC natural response
- LC natural response - derivation
- LC natural response derivation 1
- LC natural response derivation 2
- LC natural response derivation 3
- LC natural response derivation 4
- LC natural response intuition 1
- LC natural response intuition 2
- Labeling voltages
- Law of cosines
- Law of sines
- Law of sines and law of cosines word problems
- Lead lag
- Leaderboards
- Leaf
- Leafers
- LearnStorm
- LearnStorm 2016 All Math Marathons Completed
- LearnStorm 2016 All Weekly Activities Completed
- LearnStorm 2016 Cup 1: Individual Hustle Leader
- LearnStorm 2016 Cup 1: Individual Mastery Leader
- LearnStorm 2016 Cup 1: School PPES Hustle Leader
- LearnStorm 2016 Cup 1: School PPES Mastery Leader
- LearnStorm 2016 Cup 1: School Total Hustle Leader
- LearnStorm 2016 Cup 1: School Total Mastery Leader
- LearnStorm 2016 Cup 2: Individual Hustle Leader
- LearnStorm 2016 Cup 2: Individual Mastery Leader
- LearnStorm 2016 Cup 2: School PPES Hustle Leader
- LearnStorm 2016 Cup 2: School PPES Mastery Leader
- LearnStorm 2016 Cup 2: School Total Hustle Leader
- LearnStorm 2016 Cup 2: School Total Mastery Leader
- LearnStorm 2016 Cup 3: Individual Hustle Leader
- LearnStorm 2016 Cup 3: Individual Mastery Leader
- LearnStorm 2016 Cup 3: School PPES Hustle Leader
- LearnStorm 2016 Cup 3: School PPES Mastery Leader
- LearnStorm 2016 Cup 3: School Total Hustle Leader
- LearnStorm 2016 Cup 3: School Total Mastery Leader
- LearnStorm 2016 Math Marathon 1
- LearnStorm 2016 Math Marathon 2
- LearnStorm 2016 Math Marathon 3
- LearnStorm 2016 Math Marathon 4
- LearnStorm 2016 Math Marathon 5
- LearnStorm 2016 Math Marathon 6
- LearnStorm 2016 Weekly Activity 1
- LearnStorm 2016 Weekly Activity 2
- LearnStorm 2016 Weekly Activity 3
- LearnStorm 2016 Weekly Activity 4
- LearnStorm 2016 Weekly Activity 5
- LearnStorm 2016 Weekly Activity 6
- LearnStorm 2016 Weekly Activity 7
- LearnStorm 2016 Weekly Activity 8
- LearnStorm 2016 Weekly Activity 9
- LearnStorm Hustler
- LearnStorm Hustler: School
- LearnStorm Master
- LearnStorm Master: School
- Learn from mistakes
- Learning Dashboard
- Learning Goal
- Learning Programming on Khan Academy
- Least common multiple
- Length word problems
- Leonid
- Letters and symbols in multiplication and division equations
- Leukemia
- Leukemia classifications
- Leukemia diagnosis
- Leukemia pathophysiology
- Leukemia treatment
- Life Skills/College Admissions
- Like Clockwork
- Limits at infinity where f(x) is unbounded
- Limits at infinity where x is unbounded
- Line and angle proofs
- Linear and nonlinear functions
- Linear equation word problems
- Linear equations with one, zero, or infinite solutions
- Linear equations with parentheses
- Linear models of bivariate data
- Linear models word problems
- Linearity
- List of current Challenge Patches: Foundations
- List of current Challenge Patches: High school and beyond
- List of current Challenge Patches: Other
- List of current Challenge Patches: nth grade (U.S.)
- List of retired Challenge Patches
- Local linearization
- Logarithmic differentiation
- Logical reasoning
- Longer videos on khan academy
- Loop current method
- Ludicrous Listener
- Ludicrous Streak
- Lyrid
- Maclaurin series for sin x, cos x, and e^x
- Macroecon-income and expenditure: Keynesian cross and IS-LM model
- Macroeconomics
- Macroeconomics-The Monetary System
- Mad Scientist
- Magellan
- Make 10
- Make 10 (grids and number bonds)
- Make it rain
- Make line plots
- Makes Perfect
- Making Five
- Making Progress
- Making decisions with expected values
- Making drawings with code
- Making good scatter plots
- Making inferences from random samples
- Making predictions with probability
- Making small numbers in different ways
- Making the most of high school classes
- Making use of structure 1 - Factoring polynomials with quadratic forms