SPACE ACADEMY · TRY, THINK, PLAY

Class 3: Time travellers

Connect clock hands, calendars and elapsed-time clues at the selected challenge level.

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Try a quick challenge

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

ExploreClocks and elapsed time

Which clock shows 4:20?

  1. Picture A123456789101112
  2. Picture B123456789101112
  3. Picture C123456789101112
  4. Picture D123456789101112
Need a hint?

Match the short hand to the hour and the long hand to the minutes.

Answer & method
Answer D: Picture D123456789101112

The matching clock shows 4:20.

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ReasonClocks and elapsed time

A trip takes 6 hours 10 minutes. How many minutes is that?

  1. 610
  2. 371
  3. 372
  4. 370
Need a hint?

Remember: 1 hour is 60 minutes, 1 minute is 60 seconds and 1 day is 24 hours.

Answer & method
Answer D: 370

6 × 60 = 360. Then 360 + 10 = 370 minutes.

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StretchCalendars

Dev reads for 80 days. How many weeks and days is that?

  1. 11 weeks 3 days
  2. 12 weeks 3 days
  3. 11 weeks 4 days
  4. 3 weeks 11 days
Need a hint?

A week has 7 days. Use that to change between weeks and days.

Answer & method
Answer A: 11 weeks 3 days

80 ÷ 7 = 11 remainder 3.

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For grown-ups

Ideas to practise

  • Clocks and elapsed time. Separate hours and minutes. There are 60 minutes in one hour.
  • Calendars. Read the weekday headings. A week has seven days; count intervals, not both endpoints.

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 Star compass in Star Navigator. 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 clock or a later time
  • Pick the clock that shows a time
  • Read elapsed minutes on a time bar
  • Read a date or weekday on a calendar
  • Find how long an event lasts or when it ends
  • Find the time a few hours before or after
  • Count days, weeks and weekdays
  • Change between hours, minutes and seconds
  • Count or find weekday dates in a month
Play Explore

Reason

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

  • Read elapsed minutes on a time bar
  • Read a beacon timetable
  • Find how long an event lasts or when it ends
  • Find the time a few hours before or after
  • Count days, weeks and weekdays
  • Change between hours, minutes and seconds
  • Read a clock or a later time
  • Read a date or weekday on a calendar
  • Count or find weekday dates in a month
Play Reason

Stretch

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

  • Read a beacon timetable
  • Find how long an event lasts or when it ends
  • Find the time a few hours before or after
  • Count days, weeks and weekdays
  • Change between hours, minutes and seconds
  • Read elapsed minutes on a time bar
  • Pick the clock that shows a time
  • Read a date or weekday on a calendar
  • Count or find weekday dates in a month
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 3 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.

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