math-tasks/tasks/space-exploration/docs/space-exploration-4.md

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Space Exploration 4

Title: Исследуй Планету Subtitle: Собери ресурсы, решая примеры! Footer bubble: Итого собрано ресурсов:

Layout

  • 2 columns, 20 problems per page
  • Icons: pack1 (pages 16), pack2 (pages 79)

Problem Pattern

A ± B, where:

  • B is from 1 to 10
  • Result is from 1 to 29
  • Each problem crosses a 10-boundary: either 10 or 20 (strictly, not just touching)

Types:

  • Add crossing 10: A ∈ [1,9], B such that A+B ∈ [11,29]
  • Add crossing 20: A ∈ [11,19], B such that A+B ∈ [21,29]
  • Sub crossing 10: A ∈ [11,19], B such that AB ∈ [1,9]
  • Sub crossing 20: A ∈ [21,29], B such that AB ∈ [11,19]

All 4 types are mixed randomly on every page.

Pages

Page 1 (pack1)

  • Hero: spaceship1.jpeg, direction: row-reverse

Page 2 (pack1)

  • Hero: spaceship2.jpeg, direction: row

Page 3 (pack1)

  • Hero: spaceship3.png, direction: row-reverse

Page 4 (pack1)

  • Hero: spaceship4.jpeg, direction: row

Page 5 (pack1)

  • Hero: spaceship5.jpeg, direction: row-reverse

Page 6 (pack1)

  • Hero: spaceship6.jpeg, direction: row

Page 7 (pack2)

  • Hero: spaceship7.jpeg, direction: row-reverse

Page 8 (pack2)

  • Hero: spaceship8.jpeg, direction: row

Page 9 (pack2)

  • Hero: spaceship9.jpeg, direction: row-reverse