AMC 8 · Enrichment course
Competition math, diagnosed.
AMC 8 rewards the student who knows why their approach failed, not the one who saw the answer key. Flax reads your handwritten work, finds the step that broke, and sends you to the foundation underneath it.
Free during beta. You can switch to any other Flax course from Settings at any time.
9
Units
116
Contest topics
2,900+
Questions
Arithmetic, proportional reasoning, rates & data
19
Number theory
15
Algebra & equations
14
Sequences, patterns, functions & logic
10
Plane geometry
20
Coordinate, circle, spatial & 3D geometry
14
Counting & combinatorics
12
Probability
6
Contest problem structures
6
116 topics. Let's go!
Everything is ready today.
AMC 8 is a full Flax course. Here is exactly what is in it.
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The full topic map
All 9 units and 116 contest topics are in the app. Browse the curriculum unit by unit, exactly like every other Flax course.
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The whole Flax engine
Your dashboard, mastery ladder, spaced reviews, photo-scan diagnosis and foundation modules all work the moment you enrol. Nothing here is a separate app.
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The question banks
All 116 topics are practiceable: 2,968 questions, 205 of them real past AMC 8 problems, every one checked against the grader and set on the usual easy → medium → challenge ladder.
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End-of-unit tests
All 9 units end with a cumulative test: a 60-question pool covering every topic in the unit, drawing a fresh 15 each attempt.
Every topic AMC 8 asks about
9 units, 116 topics, from clever arithmetic to casework and the pigeonhole principle.
Unit 1
Arithmetic, proportional reasoning, rates & data
19
Whole-number operations
Clever arithmetic by grouping and pairing
Order of operations
Fraction operations
Equivalent fractions and comparing fractions
Decimal operations
Fraction–decimal conversion
Ratios and equivalent ratios
Proportions
Percent of a quantity
Percent increase and decrease
Successive percent changes
Unit rates
Distance–rate–time
Relative speed
Unit conversions
Mean and weighted mean
Median, mode, and range
Tables, graphs, estimation, and reasonableness
Unit 2
Number theory
15
Place value and digit representation
Digit sums and digit constraints
Divisibility rules
Factors and multiples
Prime and composite numbers
Prime factorization
Greatest common divisor
Least common multiple
Counting factors
Remainders
Basic modular arithmetic
Units-digit and remainder cycles
Parity
Perfect squares and perfect powers
Integer-solution and factor-pair constraints
Unit 3
Algebra & equations
14
Substitute values into expressions and formulas
Custom-defined operations
Algebraic manipulation and equivalent expressions
Distributive property and combining like terms
Linear equations
Equations with fractions and decimals
Equations from ratios and proportions
Systems of two equations
Translate word problems into equations
Inequalities and bounds
Absolute value
Factoring and difference-of-squares reasoning
Square roots and simple radicals
Simple quadratic reasoning
Unit 4
Sequences, patterns, functions & logic
10
Arithmetic sequences
Find an arithmetic-sequence term
Sum arithmetic sequences
Geometric and multiplicative patterns
Recursive sequences
Fibonacci-type recurrence patterns
Periodic and cyclic patterns
Functions and input-output rules
Patterns in tables and diagrams
Logical deduction and ordering constraints
Unit 5
Plane geometry
20
Basic angle relationships
Angle chasing
Parallel lines and transversals
Triangle angle sums
Isosceles triangles
Equilateral triangles
Triangle inequality
Congruent figures
Perimeter
Rectangle and square area
Triangle area
Parallelogram and trapezoid area
Composite area and area decomposition
Shaded and overlapping regions
Area ratios
Pythagorean theorem
Common Pythagorean triples
Similar triangles and similar figures
Scale factors for length and area
Regular polygons and polygon angle sums
Unit 6
Coordinate, circle, spatial & 3D geometry
14
Coordinate-plane geometry
Distance on coordinate grids
Midpoints on coordinate grids
Reflections
Rotations
Symmetry
Paper folding and reflected cuts
Circle circumference
Circle area
Arc length
Sector area
Basic radius/chord/tangent relationships
Nets and spatial visualization
Volume, surface area, and 3D scale factors
Unit 7
Counting & combinatorics
12
Systematic listing
Basic counting and the addition principle
Multiplication principle
Tree-diagram counting
Permutations
Combinations
Arrangements with restrictions
Complementary counting
Inclusion-exclusion
Venn diagrams and avoiding double counting
Casework
Pigeonhole principle
Unit 8
Probability
6
Build and interpret sample spaces
Basic probability
Probability using counting
Complementary probability
Multi-stage probability and sampling without replacement
Geometric probability
Unit 9
Contest problem structures
6
Work backward from a required result
Simulate a repeated process
Use small cases systematically
Pair or group terms strategically
Use symmetry to reduce cases
Bound possibilities to limit cases
AMC 8 is a course, not a side app
Enrol and everything you already know about Flax applies, and you can switch back to your school course any time without losing a thing.
Scan the work, not just the answer
A wrong answer on a multi-step contest problem is the least interesting part. Photograph your paper and Flax finds the line where the reasoning actually broke.
Routed to the real gap
Competition topics sit on top of ordinary arithmetic and algebra. When a counting problem falls apart because of fractions, you get sent to fractions.
Mastery that survives the gap between contests
Building → Mastered → Crowned, with reviews spaced out over weeks, so what you learn in September is still there in January.
116 topics. 2,900+ problems, ready now.
Free during beta. You can switch to any other Flax course from Settings at any time.