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Primary · OlympiadAdventure modeCategory 20 · 17 modules

Mathematical Olympiad: Primary

Mathematical Olympiad for primary school: divisibility, cryptarithms, plane geometry, counting, the pigeonhole principle, and logic puzzles.

Topics that often appear in the primary-level OSN/KSN (Indonesian National Science Olympiad), national math competitions, and international competitions (SASMO, Math Kangaroo, IMSO, IMC): number theory, algebra, geometry, combinatorics

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Number Theory Island

Number Theory

0/5 stops 0/15
  1. 1Divisibility and remaindersYou are here
  2. 2Factors, multiples, LCM, and GCD in depth
  3. 3Digit analysis and cryptarithms
  4. 4Special sequences and series
  5. 5Complex fractions and Egyptian fractions

Algebra Island

Algebra

0/3 stops 0/9
  1. 6Modeling advanced word problems
  2. 7Linear Diophantine equations
  3. 8Introduction to functions and symbolic operations

Geometry Island

Geometry

0/4 stops 0/12
  1. 9Shaded areas and dissection
  2. 10Angle chasing and polygons
  3. 11The triangle inequality and Pythagorean triples
  4. 12Visualizing 3D solids

Combinatorics Island

Combinatorics

0/3 stops 0/9
  1. 13Counting rules
  2. 14The pigeonhole principle
  3. 16Basic statistics and probability

Logic Island

Logic

0/2 stops 0/6
  1. 15Logic puzzles and deduction
  2. 17Map coloring and basic graphs