SPACE ACADEMY · TRY, THINK, PLAY

Class 4: Mission data

Read keys and axes, update a data set and connect more than one result.

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Try a quick challenge

Just a quick try. Not saved; no game rewards.

ExploreReading data

In a survey of 74 children, 20 chose cricket, 32 chose football and the rest chose hockey. How many more chose cricket than hockey?

  1. 12
  2. 42
  3. 22
  4. 2
Need a hint?

Find how many chose the last option first, then compare.

Answer & method
Answer D: 2

74 - 20 - 32 = 22 chose hockey. The difference is 2.

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ReasonReading data

By how many marks does the top total beat the lowest total?

NameMusicMathsArtEnglishNidhi6263329Rahul3516127Sameer2923416Shreya22231534
  1. 39
  2. 29
  3. 24
  4. 169
Need a hint?

Add each row to get a total first, then compare the biggest and smallest.

Answer & method
Answer B: 29

Totals: 94, 70, 99, 94. Highest 99 minus lowest 70 is 29.

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StretchReading data

Tara compares the two records. Which lab had the greatest increase from morning to evening?

Samples tested in two sessionsLabMorningEveningVega1717Nova2325Aster1210Luma2131
  1. Nova
  2. Aster
  3. Vega
  4. Luma
Need a hint?

For each lab, subtract its morning result from its evening result.

Answer & method
Answer D: Luma

Vega: 0 more; Nova: 2 more; Aster: -2 more; Luma: 10 more. Luma is greatest.

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For grown-ups

Ideas to practise

  • Reading data. Read the labels and the key before comparing or combining values.
  • Coding and decoding. Apply the stated code consistently to each letter.
  • Ranking and order. Include the person being counted when converting a rank from one end to the other.

A game mission has 8 untimed questions. Only the game saves choices and hints. A finished mission earns one launch charge and participation towards the Right power wing in Nebula Research Station. The chapter goal is 8 different questions in finished sets; hints and wrong answers count as participation, not mastery. Some craft systems link more than one chapter.

Choose a level

Explore

Foundations: read a representation and practise the underlying idea.

  • Read a score table and compare totals
  • Find the rest from a survey total
  • Read whole and half pictograph symbols
  • Read a bar chart with a non-unit scale
  • Compare book counts from a short list
  • Read a bar graph with a scaled axis
  • Count groups that overlap, with or without neither
  • Complete a number analogy
Play Explore

Reason

Paper-style reasoning: connect clues, interpret a diagram or work backwards.

  • Read a score table and compare totals
  • Compare book counts from a short list
  • Find the rest from a survey total
  • Read a bar chart with a non-unit scale
  • Read whole and half pictograph symbols
  • Combine two survey displays
  • Choose a true statement after a transfer
  • Read a bar graph with a scaled axis
  • Count groups that overlap, with or without neither
Play Reason

Stretch

Higher-order practice: link conditions, test statements and avoid a tempting wrong method.

  • Read a score table and compare totals
  • Compare book counts from a short list
  • Combine two survey displays
  • Choose a true statement after a transfer
  • Read a bar chart with a non-unit scale
  • Find the rest from a survey total
  • Update a rank when a queue changes
  • Read a bar graph with a scaled axis
  • Count groups that overlap, with or without neither
Play Stretch

Levels change representations, clues and conditions, not just the numbers. These are practice formats, not validated exam-equivalent difficulty.

Using the feedback

Learning reports distinguish hinted answers from independent first choices. They consider up to 20 recent different, unhinted questions per skill and level, and wait for at least five before suggesting extra practice. Repeating the same question does not add evidence. Reports are practice evidence, not IQ scores, diagnoses, ranks or predictions of competition results.

Ask the learner to explain a drawing or check with objects too. Choose Explore or an earlier chapter when a step feels too large.

Sources & limits

The grade topics use SOF IMO Class 4 published topic syllabus as their primary reference. The SOF sample and CREST previous-year paper below informed representations and reasoning demands. Providers have different topic boundaries; their syllabi are not interchangeable.

Questions, diagrams, picture choices, hints and explanations are original Otterly work, not copied paper questions or publisher artwork. No Olympiad provider is affiliated with or endorses Space Academy. This is not complete exam preparation; follow classroom teaching and check the current official syllabus too. Independent educator review is still needed for difficulty and breadth.

Content and coverage notes. To report a confusing question, describe the grade, chapter, level and question on the contact page. Do not send children’s personal information.

Private, local saves

Game progress stays only in this browser, in three anonymous explorer slots. Clearing site data or closing a private session may remove it. Download a private backup from Help & saves; there is no cloud sync. The game checks saves before play and stops on save failures rather than pretending progress was saved.

These page examples never change a saved game. Game links carry question settings, not a learner’s answers. There are no names, school details, public profiles, chat, analytics or advertising SDKs in the game. Grown-up guidance · Privacy

Original Otterly practice, not an official exam. Game progress stays on this browser.