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Nikipoo is in Persian (Farsi) today — narrator, texts and lessons follow the Iranian school curriculum. An English edition is on the way.

Nature Chain

Put nature's stages in order

A Science learning game for primary school, Grade 3 to Grade 6

SubjectScience Grades3 to 6 Levels200 Free in every lesson10–30%

Put nature's stages in order: the water cycle, plant growth, the story of paper, the food chain, and the steps of an experiment.

The Android app is on Cafe Bazaar and Myket, Iran's app stores. Anywhere else, play the online version in any browser.

Nature Chain is part of the Nikipoo School app, alongside 85 other games. The game is in Persian.

What does it look like?

Screenshot of Nature Chain — Experiment, again
Experiment, again
Level 4, Grade 3
Screenshot of Nature Chain — 160 levels
160 levels
Step by step, from easy to hard

About the game

Tap the cards in the right order to fill the row at the top. Only the next card is accepted, and the rest just wiggle; the child tries fearlessly until they find the order.

  • A narrator reads every level's instruction aloud (in Persian)
  • Mistakes are never scolded; the child is encouraged to try again
  • After installing, it works offline

Nature Chain — an educator's view

Many science concepts in grades 3 through 6 are “processes” — things that happen step by step. In Nature Chain, the child taps the cards in the right order to fill the top row: the stages of the water cycle, a plant growing from a seed, an animal's life cycle, the story of paper, the food chain, the path of food through the digestive system, the journey of energy, and getting ready for an earthquake. Only the next card is accepted and the rest just wiggle, so the child discovers the order by trying.

Seeing a phenomenon as a chain

The child learns that natural events don't happen all at once: water first evaporates, then forms a cloud, then falls as rain. Seeing a phenomenon as a chain helps them grasp the logic of how it happens, instead of memorizing a definition, and be able to explain it to someone else in their own words.

Each link, a condition for the next

In the food chain or the path of food through the body, each link depends on the one before it. When the child asks themselves “why is this one earlier?”, they're really examining cause and effect — a question that carries their understanding beyond memorization.

Breaking a big task into steps

Levels like “experiment and measure” and “get ready for an earthquake” show that order isn't only found in nature; our own tasks have a correct order too. This practice helps the child, in everyday life too, break a big task into small steps, one after another.

The courage to try

Because a misplaced card just wiggles and stays where it was, the child can guess freely, see the result, and think again. This freedom to try, especially for a cautious child afraid of choosing wrong, builds a safe space for boldness.

A tip for parentsPut a few bean seeds on damp cotton in a glass, and have the child draw a picture of it every two or three days. After two weeks, shuffle the drawings and ask them to arrange them in order of growth and explain each stage.

Grade by grade, what does it teach?

Level titles are listed in the order the child plays them — from easy to hard, following the school textbook.

Grade 360 levels
  1. Earth, sun, and moon
  2. Sky again
  3. Sky, Plants
  4. Sky, Animals
  5. From Farm to Table
  6. Clean and healthy
  7. Food again
  8. Air and wind
  9. Breather: food, air, and wind
  10. Cleanliness again
  11. From nature to things we use
  12. Air again
  13. Making things again
  14. Food, cleanliness
  15. Cleanliness, air and wind
  16. Food, plants
  17. Cleanliness, body
  18. Breather: cleanliness, body
  19. Air and wind, making things
  20. Making things, food
  21. Air and wind, the water cycle
  22. Making things, states of matter
  23. Boss: all the chains
  24. Experiments and measurement
  25. More Experiments
  26. Experiments, states of matter
  27. Experiments, The Body
  28. Experiments, Water Cycle
  29. Experiments, Animals
  30. States of matter
  31. Changes of state again
  32. States of Matter, Water Cycle
  33. States of Matter, Light and Sound
  34. States of Matter, The Body
  35. The water cycle
  36. Breather: Experiments, Water Cycle
  37. More Water Cycle
  38. Water Cycle, Light and Sound
  39. Water Cycle, Sky
  40. Light, Sound, and Magnets
  41. Boss: Mixed Chains
  42. More Light and Sound
  43. Light and Sound, Sky
  44. Breather: Light and Sound, Sky
  45. Light and Sound, Plants
  46. Breather: Light and Sound, Plants
  47. Plant Growth
  48. Plants again
  49. Plants, animals
  50. Plants, The Body
  51. Boss: new chains
  52. Animal Life Cycles
  53. Breather: Sky, Animals
  54. Animals again
  55. Boss: From Start to End
  56. Animals, body
  57. Boss: Order Scientist
  58. Body and growth
  59. The body again
  60. Grade 3 Celebration: Nature's Chain
Grade 460 levels
  1. Water in Nature and the City
  2. Water again
  3. Water, Recycling
  4. Force and motion
  5. Force again
  6. Force, The Body
  7. Force, Habitat
  8. Magnets in everyday life
  9. Air and wind
  10. Magnets again
  11. Let's plant and eat
  12. Breather: magnets, farming
  13. Air again
  14. Properties of materials
  15. Farming again
  16. Materials again
  17. Magnets, air
  18. Air, farming
  19. Magnets, force
  20. Air, water
  21. Breather: air, water
  22. Farming, materials
  23. Materials, magnets
  24. Farming, life cycles
  25. Materials, mixtures
  26. Boss: all the chains
  27. Mixtures and separation
  28. Mixtures, Rocks and Soil
  29. Breather: Recycling, Energy
  30. Energy and Electricity
  31. Breather: Mixtures, Energy
  32. Energy again
  33. Energy, Force
  34. Energy, The Body
  35. Rocks and Soil
  36. More Separation
  37. Rocks again
  38. Rocks and Soil, Energy
  39. Breather: Rocks and Soil, Energy
  40. Rocks and Soil, Force
  41. Breathing and Digestion
  42. Boss: Mixed Chains
  43. The Body, Habitat
  44. The Body, Life Cycle
  45. The body again
  46. Life Cycle
  47. Breather: The Body, Life Cycle
  48. More Life Cycle
  49. Life Cycle, Water
  50. Mixtures, Recycling
  51. Mixtures, Energy
  52. Boss: new chains
  53. Food chain
  54. Habitats again
  55. Boss: From Start to End
  56. Habitat, Life Cycle
  57. Boss: Order Scientist
  58. The story of paper
  59. Recycling again
  60. Grade 4 Celebration: Nature's Chain
Grade 540 levels
  1. Sound and Hearing
  2. More Sound
  3. Sound, light
  4. Sound, Flowers and Plants
  5. Heat and temperature
  6. More Heat
  7. Heat, Sound
  8. Heat, Earth
  9. Heat, Light
  10. Digesting Food
  11. Digestion again
  12. Photosynthesis, digestion
  13. Digestion, nerves and senses
  14. Physical and chemical change
  15. Change again
  16. Changes in matter, simple machines
  17. Breather: Material Changes, Simple Machines
  18. Light and Seeing
  19. Breather: Heat, Light
  20. Light again
  21. Light, flowers and plants
  22. The Body's Messaging System
  23. Breather: Photosynthesis, Nerves and Senses
  24. Senses again
  25. Nerves and senses, changes in matter
  26. Simple machines
  27. More Machines
  28. Simple machines, Earth
  29. A changing Earth
  30. More Earth
  31. Breather: Simple Machines, Earth
  32. Flowers and plant reproduction
  33. Boss: Mixed Chains
  34. Plants again
  35. Boss: From Start to End
  36. Flowers and plants, photosynthesis
  37. Boss: Order Scientist
  38. The leaf's factory
  39. Photosynthesis again
  40. Grade 5 Celebration: Nature's Chain
Grade 640 levels
  1. The solar system
  2. Sky again
  3. Sky, forest
  4. A journey inside the Earth
  5. More Inside the Earth
  6. Earth's interior, earthquakes
  7. Breather: Earth's interior, earthquakes
  8. Ready for an earthquake
  9. Breather: electricity and magnets, earthquakes
  10. More Earthquakes
  11. Earthquakes, food chain
  12. Force, Sky
  13. Electricity and magnetism
  14. More Electricity
  15. Force and Pressure
  16. Force again
  17. Electricity and magnets, Earth's interior
  18. The journey of energy
  19. Energy again
  20. Energy, electricity and magnets
  21. Cell and microscope
  22. More Cells
  23. Cells, microbes
  24. Food chain
  25. Boss: From Start to End
  26. More Chains
  27. A forest for everyone
  28. Breather: Force, Forest
  29. More Forest
  30. Food Chain, Force
  31. The world of microbes
  32. Blood and immunity
  33. Breather: cells, health
  34. More Microbes
  35. More Health
  36. Boss: Mixed Chains
  37. Microbes, health
  38. Boss: Order Scientist
  39. Health, energy
  40. Grade 6 Celebration: Nature's Chain

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Open Nikipoo School — Nature Chain and 85 other games are waiting for you.

The Android app is on Cafe Bazaar and Myket, Iran's app stores. Anywhere else, play the online version in any browser.