The OC Mathematical Reasoning Accelerator (Year 4, 2026 Test)

The Opportunity Class (OC) Mathematical Reasoning paper is your child’s first look at high-level problem-solving, and this is a golden opportunity to build a strong foundation. We understand that families are busy, which is why we’ve created the Mathematical Reasoning Accelerator: a flexible, powerful programme designed to fit your schedule. This isn’t a live course with rigid timings; it’s a collection of 10 x 30-minute on-demand masterclasses that deconstruct the full spectrum of OC maths challenges. Your child can learn and practise at a time that best suits your family, turning potential downtime into a period of incredible growth.

Our Guiding Philosophy: Schemas, Not Sums

Top marks are not earned by just “doing sums.” They are earned by applying the correct mental model (schema) to each problem type. Our methodology is designed to transform your child from a passive calculator into an active problem-solver who can instantly categorise a question and deploy the most efficient strategy.

A Deep Dive into the Core Mathematical Disciplines

Our curriculum is built around the key mathematical strands that consistently appear in the OC Test. Each module provides specific, actionable strategies for each one.

1. Ratio and Proportion Foundations

• The Pain Point: Confusing part-part with part-whole ratios.
• Our Solution: We install the tape diagram schema, making complex relationships visual and intuitive. This simple drawing technique prevents the most common ratio errors.

2. Fractions and Decimals Fluency

• The Pain Point: Getting stuck on fraction-of-a-set problems or slow conversions.
• Our Solution: We build fluency with unit fractions and simple decimal-to-fraction conversions, ensuring your child can move between them with speed and accuracy.

3. Geometric Reasoning and Measurement

• The Pain Point: Losing marks on perimeter and area of simple composite shapes.
• Our Solution: Our edge-audit protocol teaches students to systematically account for every side, preventing common miscounts on L-shapes and other composites.

4. Spatial Reasoning

• The Pain Point: Getting confused by 3D nets and basic rotations.
• Our Solution: We teach the opposites-invariant rule for cube nets, allowing students to quickly validate a net without mentally folding it. We also cover basic quarter and half-turn rotations.

5. Data & Graph Interpretation

• The Pain Point: Reading a graph correctly but struggling with “how many more/less” or “reach the target” questions.
• Our Solution: The to-beat protocol turns data into decisions. Students learn to quickly calculate the difference between bars or the amount needed to reach a specific goal.

6. Patterns & Early Algebra

• The Pain Point: Getting stuck on “operator machine” or “what comes next” problems.
• Our Solution: We teach students to use a state table (n, rule, delta) to systematically find the rule in a pattern, making them predictable and easy to solve.

The Ultimate Advantage: A Time-Based Strategy

Speed without accuracy is useless. Our system is designed for both. We teach a skip-flag-return protocol that empowers students to:

1. Harvest single-step questions on the first pass.
2. Bank time for slightly more complex problems.
3. Estimate first to check if an answer is reasonable before calculating.

This is more than preparation; it is a fundamental upgrade to your child’s mathematical reasoning abilities. The OC Test rewards strategic thinking, not just calculation. Enrol in the Mathematical Reasoning Accelerator today and equip your child with the schemas for success.