Class 5: Logic launchpad

Ideas to practise

• Comparing quantities. Compare the values, not the size or spacing of their pictures.
• Direction sense. Track north/south and east/west movements separately.
• Ranking and order. Include the person being counted when converting a rank from one end to the other.
• Clocks and elapsed time. Separate hours and minutes. There are 60 minutes in one hour.
• Coding and decoding. Apply the stated code consistently to each letter.
• Number patterns. Look for the same change between neighbouring numbers.
• Visual reasoning. Track the position, orientation and markings, not just the outline. Check every part of a picture.
• Possible combinations. Match each choice in the first group with every allowed choice in the second.
• Working backwards. Undo the last operation first, then undo the earlier operation.
• Sorting by a rule. Check which object does not share the named property.
• Calendars. Read the weekday headings. A week has seven days; count intervals, not both endpoints.
• Shapes and their properties. Count straight sides and corners carefully. A curved edge is not a straight side.
• Routes and constraints. Follow only the allowed paths. At a junction, add the ways arriving from its incoming paths.

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 Habitat pod in Galaxy Command. 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

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 5 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.

• Sample, not an administered paper: SOF IMO Class 5 sample, 2026-27
• Previous-year paper: CREST CMO Class 5 previous-year paper, 2023-24 Set A

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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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