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中文Book the diagnostic, A$200
中文

Sydney Grammar graduate · HSC All Rounder · 200+ students taught

Opportunity Class preparation for Year 3 and Year 4.

I'm Nelson Zhou. Before recommending any lessons I run a one hour diagnostic across Reading, Writing and Mathematical Reasoning, mark it myself, and return a written report within five business days. If your child does not need a program yet, I will tell you that.

  • Term programs from A$1,900
  • Paired lessons A$100 an hour
  • One to one A$150 an hour
  • Capped at 8 students per teacher
Book the diagnostic, A$200Or try the free practice questions

Free OC practice

Free to use, no account needed. It will show you the question types. It is not a substitute for the diagnostic, which is what tells you where your child actually sits.

OC FREE STARTER

Start with the method.
See what comes next.

Use all 12 current lessons and 18 starter questions free.

Start 18 free questions Enquire about preparation

Programs and consultations

Choose practice or a consultation.

Use the current OC practice, or enquire about a consultation with me.

OC plan comparison

Compare OC preparation options

Use the available practice, or enquire about a consultation with me.

Opportunity Class plan feature comparison
Feature
Free foreverOC Free StarterFreeOngoing access to currently released free OC tools
Programs and consultationsOC ConsultationScope-basedScope, timing and fees are confirmed personally
OC study lessonsStructured lessons for core OC question types and methods.
Included12 current lessons are available now.
Separate serviceSoftware is not bundled with Nelson-led support.
Original starter practiceOriginal questions with subject and difficulty selection.
Included18 current questions across three subjects.
Separate servicePractice software remains a separate product.
Hints and worked solutionsSupport that explains the method after each attempt.
IncludedHints and worked steps are available in the current bank.
IncludedDirect explanation is part of an agreed teaching scope.
No-account mixed diagnosticA distinct mixed diagnostic that can be started without sign-up.
Not includedA dedicated OC diagnostic is not live yet.
IncludedNelson can assess needs within an agreed support scope.
Saved progress historyAn account-backed view of attempts, strengths and weaknesses.
Not includedCurrent OC results remain in the active browser session.
Separate servicePersonal notes do not create software account history.
Complete preparation bankA larger syllabus-spanning bank with full worked solutions.
Not includedFree Starter currently contains 18 questions.
Separate servicePrograms and consultations do not bundle a software bank.
Timed sets and mock examsExam-style mixed sets and full timed simulations.
Not includedThe current starter bank is untimed practice.
Separate serviceAny supervised mock work is scoped personally.
Parent reporting and printable reviewClear progress summaries and review materials for families.
Not includedParent reports and printable reviews are not live.
IncludedFamily feedback is included when agreed in the service scope.
Direct support from NelsonIndividual planning, teaching and feedback from Nelson Zhou.
Not includedFree software does not include private teaching.
IncludedAvailable after scope and fit are confirmed.
Free forever

OC Free Starter

FreeOngoing access to currently released free OC tools
OC study lessonsStructured lessons for core OC question types and methods.
Included12 current lessons are available now.
Original starter practiceOriginal questions with subject and difficulty selection.
Included18 current questions across three subjects.
Hints and worked solutionsSupport that explains the method after each attempt.
IncludedHints and worked steps are available in the current bank.
No-account mixed diagnosticA distinct mixed diagnostic that can be started without sign-up.
Not includedA dedicated OC diagnostic is not live yet.
Saved progress historyAn account-backed view of attempts, strengths and weaknesses.
Not includedCurrent OC results remain in the active browser session.
Complete preparation bankA larger syllabus-spanning bank with full worked solutions.
Not includedFree Starter currently contains 18 questions.
Timed sets and mock examsExam-style mixed sets and full timed simulations.
Not includedThe current starter bank is untimed practice.
Parent reporting and printable reviewClear progress summaries and review materials for families.
Not includedParent reports and printable reviews are not live.
Direct support from NelsonIndividual planning, teaching and feedback from Nelson Zhou.
Not includedFree software does not include private teaching.
Programs and consultations

OC Consultation

Scope-basedScope, timing and fees are confirmed personally
OC study lessonsStructured lessons for core OC question types and methods.
Separate serviceSoftware is not bundled with Nelson-led support.
Original starter practiceOriginal questions with subject and difficulty selection.
Separate servicePractice software remains a separate product.
Hints and worked solutionsSupport that explains the method after each attempt.
IncludedDirect explanation is part of an agreed teaching scope.
No-account mixed diagnosticA distinct mixed diagnostic that can be started without sign-up.
IncludedNelson can assess needs within an agreed support scope.
Saved progress historyAn account-backed view of attempts, strengths and weaknesses.
Separate servicePersonal notes do not create software account history.
Complete preparation bankA larger syllabus-spanning bank with full worked solutions.
Separate servicePrograms and consultations do not bundle a software bank.
Timed sets and mock examsExam-style mixed sets and full timed simulations.
Separate serviceAny supervised mock work is scoped personally.
Parent reporting and printable reviewClear progress summaries and review materials for families.
IncludedFamily feedback is included when agreed in the service scope.
Direct support from NelsonIndividual planning, teaching and feedback from Nelson Zhou.
IncludedAvailable after scope and fit are confirmed.

HOW THE PREPARATION ROUTE WORKS

Begin with evidence. Continue without hidden assumptions.

Each step says what works now, when an account is required and what remains clearly labelled by its current availability.

  1. 01

    Learn

    Use the 12 current lessons to understand one repeatable method.

  2. 02

    Practise

    Work through 18 original starter questions with hints.

  3. 03

    Review

    Use real accuracy and subject results to choose the next lesson.

  4. 04

    Continue

    Enquire about the next step with me.

CURRENT COVERAGE

OC preparation, clearly mapped.

  • Reading
  • Thinking Skills
  • Mathematical Reasoning

Three connected fields

Know what you are training.

Each subject has its own knowledge and habits. The learning route makes those differences clear while keeping the same understand, practise and review cycle.

FREE

READING

Read like a detective

Build from locating exact evidence to making careful inferences and judging how strongly a text supports a claim.

Learning path
Evidence → inference → whole-text meaning
Study lessons
4
Starter questions
6
FREE

THINKING SKILLS

Make every step defensible

Turn words into rules, test conclusions and recognise patterns without guessing from the first clue.

Learning path
Represent → test → prove
Study lessons
4
Starter questions
6
FREE

MATHEMATICAL REASONING

Model first, calculate second

Translate situations into quantities, choose an efficient representation and check whether the answer makes sense.

Learning path
Understand → model → calculate → check
Study lessons
4
Starter questions
6

Study material

Build an expert's habits, one method at a time.

Open a lesson, follow its short method and try the mini example before revealing the model answer. The goal is to know why a method works, not simply to remember an option.

FREE STARTER
01

Reading

Read like a detective

Evidence → inference → whole-text meaning
Lesson 1 · FREEFind proof, not just familiar wordsExplicit information

A reliable method

  1. Underline the key idea in the question.
  2. Scan for that idea or a close synonym.
  3. Read the complete sentence before choosing.

Mini example

Text: 'The ferry left after the fog lifted.' Question: Why was the ferry delayed?

Reveal model answer

The ferry waited for the fog to lift.

Watch for: Choosing an option that repeats a word from the text but changes what happened.

Lesson 2 · FREEBuild an inference from cluesInference

A reliable method

  1. Collect two or more relevant clues.
  2. Ask what must or most likely follows.
  3. Reject ideas that are possible but not supported.

Mini example

Luca puts his wet umbrella by the door and wipes his glasses. What is likely true outside?

Reveal model answer

It is probably raining. Both clues support that inference.

Watch for: Adding a dramatic detail that the text never suggests.

Lesson 3 · FREEState the main idea at the right sizeMain idea and synthesis

A reliable method

  1. Give each paragraph a short label.
  2. Notice the idea repeated or developed across them.
  3. Choose a summary broad enough for the whole text but no broader.

Mini example

Three paragraphs describe a creek clean-up, the wildlife returning and the need for continued care.

Reveal model answer

Community care has helped the creek recover, but the work must continue.

Watch for: Selecting a memorable detail from one paragraph as the whole main idea.

Lesson 4 · FREEJudge evidence carefullyEvaluating evidence

A reliable method

  1. Separate an observation from a claimed cause.
  2. Look for other explanations or missing comparison groups.
  3. Use cautious words such as suggests when proof is incomplete.

Mini example

A class uses new pencils and writes faster that day. Did the pencils cause the improvement?

Reveal model answer

Not necessarily. Practice, task difficulty or excitement could also affect speed.

Watch for: Treating two events that happen together as proof that one caused the other.

Practise Reading
FREE STARTER
02

Thinking Skills

Make every step defensible

Represent → test → prove
Lesson 1 · FREETurn ordering clues into a chainConstraints and ordering

A reliable method

  1. Shorten each clue into symbols or arrows.
  2. Combine clues that share an item.
  3. Check every option against every rule.

Mini example

Kai is before Noor. Noor is before Eli.

Reveal model answer

The fixed chain is Kai → Noor → Eli.

Watch for: Stopping after an option passes only the first condition.

Lesson 2 · FREEFind the missing bridge in an argumentIdentifying assumptions

A reliable method

  1. Write the evidence in a few words.
  2. Write the conclusion separately.
  3. Ask what must be accepted to move from one to the other.

Mini example

Five friends like a new game, so everyone at school will like it.

Reveal model answer

The argument assumes five friends represent everyone at school.

Watch for: Choosing an interesting fact that is not required by the argument.

Lesson 3 · FREETest a deduction with groupsLogical deduction

A reliable method

  1. Draw group circles or use a simple table.
  2. Apply words such as all, some and no exactly.
  3. Choose only what must follow, not what might follow.

Mini example

All zibs are blue. Taro is a zib.

Reveal model answer

Taro must be blue. We cannot conclude that every blue thing is a zib.

Watch for: Reversing an all statement.

Lesson 4 · FREESplit a complex patternPattern recognition

A reliable method

  1. Write the differences between number terms.
  2. For mixed pairs, solve each part separately.
  3. Check the rule against every transition before continuing it.

Mini example

2, 5, 9, 14, … has differences +3, +4, +5.

Reveal model answer

The next difference is +6, so the next term is 20.

Watch for: Using a rule that explains only the final two terms.

Practise Thinking Skills
FREE STARTER
03

Mathematical Reasoning

Model first, calculate second

Understand → model → calculate → check
Lesson 1 · FREEFind a fraction of a quantityFractions

A reliable method

  1. Use the denominator to divide into equal groups.
  2. Use the numerator to count the needed groups.
  3. Check that a proper fraction gives less than the whole.

Mini example

Find 3/5 of 35.

Reveal model answer

35 ÷ 5 = 7, then 7 × 3 = 21.

Watch for: Dividing by the numerator instead of the denominator.

Lesson 2 · FREEUse a unit rateRates

A reliable method

  1. Find the amount for one unit.
  2. Multiply that unit rate by the new number of units.
  3. Include the correct measurement unit.

Mini example

Four notebooks cost $12. At the same rate, what do seven cost?

Reveal model answer

$12 ÷ 4 = $3 each; 7 × $3 = $21.

Watch for: Adding the same number to both quantities instead of scaling.

Lesson 3 · FREERead percentage changes in orderPercentages

A reliable method

  1. Find the percentage of the current amount.
  2. Complete the increase or decrease.
  3. Use the new amount as the base for the next change.

Mini example

$50 rises by 10%, then the new price falls by 10%.

Reveal model answer

$50 → $55 → $49.50. Equal percentages do not usually cancel because their bases differ.

Watch for: Adding and subtracting percentage numbers without checking their bases.

Lesson 4 · FREEWork backwards from an averageData reasoning

A reliable method

  1. Multiply the average by the number of values to find the total.
  2. Add the known values.
  3. Subtract to find the missing value, then verify the average.

Mini example

Three scores average 8. Two scores are 6 and 9.

Reveal model answer

Total = 3 × 8 = 24; missing score = 24 − 15 = 9.

Watch for: Treating the stated average as the missing value.

Practise Mathematical Reasoning
FREE STARTER

Question bank

Ready to use the method?

Filter by subject, skill or difficulty. Ask for a hint if you need one, check your choice and study the complete reasoning before moving on.

18 original questions3 difficulty levels3 subject banks
Open the OC question bank

YOUR NEXT STEP

Start with practice. Enquire when you need a consultation.

I will confirm the service, time and fee with you personally.