Grade 5 math, as an adventure

46 5th grade topics in six worlds: Morocco and the Sahara, Himalayas, Amazon Rainforest, Siberia, Great Barrier Reef and Torres Strait and Serengeti. In each world, characters guarding eggs ask story problems. Solve them to claim the egg, warm it and hatch a hybrid animal.

The six worlds of Grade 5

• World 1: Morocco and the Sahara

  Place Value & Decimals

  Big numbers, powers of 10, decimals to thousandths, and multi-digit operations.

  See topics and a sample problem

• World 2: Himalayas

  Expressions & Patterns

  Order of operations, writing expressions, and numerical patterns.

  See topics and a sample problem

• World 3: Amazon Rainforest

  Fractions

  Adding, subtracting, multiplying and dividing fractions and mixed numbers.

  See topics and a sample problem

• World 4: Siberia

  Measurement & Data

  Unit conversions, volume, line plots and averages.

  See topics and a sample problem

• World 5: Great Barrier Reef and Torres Strait

  Geometry

  The coordinate plane, classifying shapes, angles, and area of triangles.

  See topics and a sample problem

• World 6: Serengeti

  Ratio, Rate & Percent

  Singapore teaches these in Primary 5; in the US they start in grade 6. Unlocked by the teacher.

  See topics and a sample problem

How a problem works

Problems are read, not raced: there is no timer and no lives to lose. A first wrong answer gets a tip that uses that problem’s own numbers. A second shows the problem worked out step by step. Every wrong answer we plan for is tied to a named mistake, so the grown-ups’ dashboard can show where to help and why.

Other grades: Grade 1 · Grade 2 · Grade 3 · Grade 4 · Grade 6 · Grade 7