SPACE ACADEMY · TRY, THINK, PLAY

Class 2: Time travellers

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

Try a quick challenge

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

ExploreClocks and elapsed time

Read the mission timetable. Which task takes the shortest time?

TaskStartEndBriefing9:109:30Moon Walk9:309:55Lab Check9:5510:40Cleanup10:4011:10
  1. Moon Walk
  2. Briefing
  3. Lab Check
  4. Cleanup
Need a hint?

Work out how many minutes each task lasts, then compare them.

Answer & method
Answer B: Briefing

The tasks take Briefing 20 min, Moon Walk 25 min, Lab Check 45 min, Cleanup 30 min, so Briefing takes the shortest time.

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ReasonClocks and elapsed time

Look at the timeline for Radio link. How many minutes does Radio link take in all?

Radio link Timeline20 min30 min5:406:006:30
  1. 48
  2. 40
  3. 50
  4. 10
Need a hint?

Add the minutes before the whole hour to the minutes after the whole hour.

Answer & method
Answer C: 50

From 5:40 to 6:00 is 20 min, plus 30 min to 6:30 makes 50 min.

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StretchClocks and elapsed time

The clock shows when a child reaches the library. They left home 1 hour 25 minutes before. At what time did they leave?

123456789101112
  1. 10:40
  2. 8:50
  3. 7:50
  4. 6:50
Need a hint?

Count back from the time on the clock. Take away the hours first.

Answer & method
Answer C: 7:50

The clock shows 9:15. 1 hour 25 minutes before is 7:50.

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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 Radio dish in Outer Planet Voyager. 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 hour and minute hands
  • Find the finish time or minutes left from a clock
  • Pick the analog clock that matches a stated time
  • Read elapsed minutes from a timeline bar
  • Convert hours, minutes, days and weeks
  • Read a mission timetable
Play Explore

Reason

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

  • Choose a clock after an elapsed time
  • Find the finish time or minutes left from a clock
  • Read a mission timetable
  • Count days or weekdays on a month calendar
  • Convert hours, minutes, days and weeks
  • Read elapsed minutes from a timeline bar
Play Reason

Stretch

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

  • Link travel, a stop and an arrival
  • Reason with an original month calendar
  • Find the finish time or minutes left from a clock
  • Pick the analog clock that matches a stated time
  • Read a mission timetable
  • Read elapsed minutes from a timeline bar
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 2 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.