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Curriculum

362 short explainer videos. Up to five ways to see the same idea.

Math has the deepest catalog at launch — 362 short explainer videos across grades 2 through 5, mapped to Common Core, paced by your child's actual work. Pre-K, 1st, and 6th–8th expand over time. Reading, spelling, science, and PE focus warmups round out every grade.

Five teaching angles

Whichever way clicks for your child.

The design supports five teaching angles per topic; the catalog grows toward that as new videos render. When a child stalls on one, Koda offers another. The math doesn't change; the lens does.

  • Concrete
    Base-ten blocks, fraction circles, the things you can hold.
  • Number line
    Number line. The distance between numbers, made visible.
  • Area / grid
    Grids and arrays. Multiplication and division as space.
  • Standard algorithm
    The standard algorithm — the page-and-pencil method.
  • Word problem
    A small word problem. Same math, real situation.
Grade 0

Grade 0

Koda — Introductory Demo
Word problem
Grade 2

Grade 2 — adding and subtracting up to 1,000.

Place value, regrouping, money, time. The foundation everything else stands on.

2D Shape Attributes — Sides, Vertices, Angles
Concrete · Common slip
3D Shape Attributes — Faces, Edges, Vertices
Concrete · Common slip
Adding Within 100 (Mental Strategies)
Concrete · Standard algorithm · Common slip
Addition Within 1,000 with Regrouping
Concrete · Standard algorithm · Common slip
AM/PM and Elapsed Time
Number line · Word problem · Common slip
Bar Graphs and Picture Graphs — Reading Data
Area / grid · Common slip
Comparing 3-Digit Numbers — Greater, Less, or Equal
Number line · Standard algorithm · Common slip
Counting Coins — Pennies, Nickels, Dimes, and Quarters
Concrete · Word problem · Common slip
Distributive Subtraction — Same Trick, Just Minus
Concrete
Dollars and Cents — Reading $ Amounts
Concrete · Standard algorithm · Common slip
Equal Shares — Why 'One Fourth' Means One of Four EQUAL Pieces
Area / grid · Word problem · Common slip
Estimating Length — Using Familiar Things as Rulers
Concrete
Even and Odd Numbers — Pairs and Leftovers
Concrete · Word problem · Common slip
Expanded Form — Splitting a Number Into Its Pieces
Concrete · Standard algorithm
Length: Inches and Centimeters — Reading a Ruler
Concrete · Common slip
One-Step Word Problems — Picture It, Then Solve
Word problem
Partitioning Shapes — Halves, Thirds, Fourths
Area / grid · Common slip
Place Value to 1,000
Concrete · Number line · Standard algorithm
Problem 8 — From Groups to the Distributive Trick
Concrete
Problem 8 — The Distributive Trick
Concrete
Repeated Addition — A Sneak Peek at Multiplication
Concrete · Area / grid · Common slip
Skip Counting by 5, 10, and 100 — Patterns That Save Time
Number line · Common slip
Subtracting Within 100 — Mental Math on a Number Line
Concrete · Number line · Standard algorithm
Subtraction Across Zeros
Concrete · Standard algorithm · Common slip
Subtraction with Regrouping
Concrete · Standard algorithm · Common slip
Telling Time to 5 Minutes — Reading the Clock
Concrete · Common slip
Two-Step Word Problems — Solve One Part, Then the Next
Word problem
Grade 3

Grade 3 — multiplication, division, and the start of fractions.

Equal groups, arrays, parts of a whole. The year fractions show up.

Area = Length × Width — Why the Formula Works
Area / grid · Standard algorithm · Word problem · Common slip
Area by Counting Unit Squares
Area / grid · Word problem · Common slip
Area Model Introduction — A Multiplication Fact is a Rectangle
Area / grid · Word problem · Common slip
Bar Graphs and Line Plots — Reading and Making Data
Area / grid · Word problem · Common slip
Classifying Quadrilaterals
Concrete · Word problem · Common slip
Comparing Fractions with the Same Denominator
Number line · Area / grid · Word problem · Common slip
Comparing Fractions with the Same Numerator
Number line · Area / grid · Word problem · Common slip
Division as the Inverse of Multiplication — Fact Families
Concrete · Area / grid · Word problem · Common slip
Elapsed Time on a Number Line — Counting Forward
Number line · Word problem · Common slip
Equivalent Fractions — Different Names, Same Slice
Number line · Area / grid · Word problem · Common slip
Fractions on the Number Line — Not Just Pizza Slices
Number line · Word problem · Common slip
Fractions: Pieces Must Be Equal
Area / grid · Word problem · Common slip
Mass and Liquid Volume — Picking the Right Unit
Concrete · Word problem · Common slip
Mixed Operation Word Problems — Pick the Right Tool
Word problem · Common slip
Multi-Digit Addition and Subtraction — The Standard Algorithm
Concrete · Standard algorithm · Word problem · Common slip
Multiplication as Equal Groups — Word Problems
Concrete · Number line · Standard algorithm · Word problem · Common slip
Multiplication by 0 and 1 — The Identity Tricks
Concrete · Number line · Standard algorithm · Word problem · Common slip
Multiplication Facts: 2s, 5s, and 10s — Patterns on the Number Line
Concrete · Number line · Word problem · Common slip
Multiplication with Arrays — Rows and Columns
Concrete · Area / grid · Word problem · Common slip
Multiplicative Comparison — 'Three Times As Many' vs 'Three More'
Area / grid · Word problem · Common slip
Multiplying by Multiples of 10 — The Shift Trick
Area / grid · Standard algorithm · Word problem · Common slip
Partitioning Shapes into Equal Areas
Area / grid · Standard algorithm · Common slip
Patterns in the Multiplication Table
Area / grid · Standard algorithm · Word problem · Common slip
Perimeter — The Walk Around
Concrete · Standard algorithm · Word problem · Common slip
Place Value to 10,000 — Adding the Thousands Place
Concrete · Number line · Standard algorithm · Common slip
Rounding to the Nearest 10 or 100
Number line · Word problem · Common slip
Telling Time to the Minute — Beyond the 5-Minute Marks
Concrete · Word problem · Common slip
The 9s Trick — Two Patterns That Make Nines Easy
Standard algorithm · Word problem · Common slip
The Tough Multiplication Facts: 3, 4, 6, 7, 8 — Doubling and Decomposing
Area / grid · Word problem · Common slip
Two Meanings of Division — Sharing vs Measuring
Concrete · Word problem · Common slip
Whole Numbers as Fractions — Hidden Identities
Number line · Area / grid · Common slip
Grade 4

Grade 4 — multi-digit operations and equivalent fractions.

Standard algorithms for big numbers. Equivalent fractions and decimal tenths and hundredths.

1-Digit × Multi-Digit — The Standard Algorithm
Standard algorithm · Word problem · Common slip
2-Digit × 2-Digit — The Standard Algorithm
Standard algorithm · Word problem · Common slip
Adding & Subtracting Fractions with Like Denominators
Number line · Area / grid · Standard algorithm · Word problem · Common slip
Adding Angles — A Bigger Angle is Made of Smaller Ones
Concrete · Word problem · Common slip
Area and Perimeter Formulas — Two Different Measurements
Area / grid · Standard algorithm · Word problem · Common slip
Classifying Quadrilaterals — The Family Tree
Concrete · Common slip
Classifying Triangles — By Sides and By Angles
Concrete · Common slip
Comparing Decimals — Why 0.4 > 0.39
Number line · Common slip
Comparing Fractions with Unlike Denominators
Number line · Area / grid · Common slip
Comparing Multi-Digit Numbers — Digit by Digit
Number line · Standard algorithm · Common slip
Converting Fractions to Decimals (10ths and 100ths)
Number line · Area / grid · Common slip
Decimal Notation — A Different Way to Write Fractions
Number line · Area / grid · Common slip
Decomposing Fractions — Splitting a Fraction Into Pieces
Area / grid · Word problem · Common slip
Division with Partial Quotients — Subtract Easy Multiples
Area / grid · Standard algorithm · Common slip
Division with the Area Model — Reading Backwards
Area / grid · Word problem · Common slip
Equivalent Fractions — The Multiply-Both-Parts Rule
Area / grid · Standard algorithm · Word problem · Common slip
Factors and Multiples — Spotting What's Inside a Number
Concrete · Number line · Area / grid · Word problem · Common slip
Line Plots with Fractional Measurements
Number line · Common slip
Lines of Symmetry — Folding a Shape Onto Itself
Concrete · Word problem · Common slip
Long Division — Common Mistakes
Area / grid · Standard algorithm · Word problem · Common slip
Measuring Angles with a Protractor
Concrete · Word problem · Common slip
Mete — The Trick for 731 × 43 − 731 × 42
Concrete · Standard algorithm · Common slip
Mixed Numbers and Improper Fractions — Two Names for the Same Thing
Number line · Area / grid · Common slip
Multi-Digit Addition and Subtraction — At Scale
Standard algorithm · Word problem · Common slip
Multi-Step Word Problems — Plan, Solve, Check
Word problem · Common slip
Multiplying 1-Digit by Multi-Digit — The Area Model
Area / grid · Common slip
Multiplying 2-Digit by 2-Digit — The Area Model
Area / grid · Word problem · Common slip
Multiplying a Fraction by a Whole Number — Repeated Addition
Area / grid · Word problem · Common slip
Number and Shape Patterns — Find the Rule
Number line · Standard algorithm · Common slip
Parallel and Perpendicular Lines
Concrete · Word problem · Common slip
Partial Products — From the Area Model to Numbers
Area / grid · Standard algorithm · Common slip
Place Value to 1,000,000 — The 10-Times Rule
Concrete · Standard algorithm · Common slip
Points, Lines, Rays, and Angles
Concrete · Word problem · Common slip
Prime and Composite Numbers — How Many Rectangles?
Area / grid · Word problem · Common slip
Rounding Multi-Digit Numbers — Any Place
Number line · Word problem · Common slip
Unit Conversions Within a System
Standard algorithm · Word problem · Common slip
Word Problems with Fractions — Real Stories
Word problem · Common slip
Word Problems with Measurements
Word problem · Common slip
Grade 5

Grade 5 — fractions and decimals, and the road to ratios.

Adding and subtracting unlike fractions. Decimals to thousandths. Volume, coordinates, expressions.

2D Shape Hierarchy
Concrete · Common slip
Adding & Subtracting Fractions with Unlike Denominators
Area / grid · Standard algorithm · Common slip
Adding and Subtracting Mixed Numbers — With Regrouping
Area / grid · Standard algorithm · Common slip
Comparing Decimals to Thousandths
Number line · Common slip
Converting Within a Measurement System
Standard algorithm · Word problem
Decimal Addition and Subtraction — Line Up the Decimal Points
Standard algorithm · Common slip
Decimal Multiplication — Where Does the Decimal Point Go?
Area / grid · Standard algorithm · Word problem · Common slip
Decimals to Thousandths — Place Values Beyond the Hundredth
Concrete · Number line · Common slip
Dividing a Decimal by a Decimal
Area / grid · Standard algorithm · Common slip
Dividing a Decimal by a Whole Number
Area / grid · Standard algorithm · Word problem · Common slip
Dividing a Unit Fraction by a Whole Number
Area / grid · Word problem · Common slip
Dividing a Whole Number by a Unit Fraction
Area / grid · Word problem
Line Plots with Fractions (Multiplication and Division)
Number line · Word problem · Common slip
Long Division — 4-Digit by 2-Digit
Standard algorithm · Common slip
Multi-Digit Multiplication — Standard Algorithm at Scale
Area / grid · Standard algorithm · Common slip
Multiplying Fractions — The Area Model
Area / grid · Common slip
Multiplying Fractions — The Procedure
Standard algorithm · Common slip
Multiplying Mixed Numbers — Convert First
Area / grid · Standard algorithm · Common slip
Numerical Expressions
Standard algorithm · Word problem · Common slip
Order of Operations — PEMDAS
Standard algorithm · Common slip
Patterns: Two Rules and Ordered Pairs
Number line · Area / grid
Plotting Points in the First Quadrant
Number line · Area / grid · Common slip
Powers of 10 — The Digit Shift
Area / grid · Standard algorithm · Word problem · Common slip
Real-World Coordinate Problems
Word problem
Rounding Decimals — Same Rule, Smaller Pieces
Number line · Common slip
Scaling — When Multiplying Makes Things Smaller
Number line · Area / grid · Common slip
Volume by Counting Unit Cubes
Concrete · Area / grid · Common slip
Volume Formula: V = l x w x h
Concrete · Area / grid · Standard algorithm · Word problem · Common slip
Volume of Composite Shapes
Area / grid · Common slip
Word Problems with Fractions — All Four Operations
Word problem
On the roadmap

What's coming, and roughly when.

We won't ship a grade we can't tutor well. The catalog grows in software updates — your device picks them up automatically. Here's what's planned:

  • Pre-K · K
    Counting, ten-frames, shape sense, number tracing
    Next up
  • Grade 1
    Place value to 100, addition / subtraction within 100, time
    Next up
  • Grade 6
    Ratios, percent, statistics, expressions, integers
    After K-1
  • Grade 7
    Proportional reasoning, expressions, equations, geometry
    After 6
  • Grade 8
    Linear functions, systems, exponents, geometry transformations
    After 7
  • Reading · spelling · science · PE focus warmups
    Cross-grade. Ship with starter content; deepen with the math catalog.
    At launch
Join the waitlistSee how Koda teaches →