Problems & Reasoning

Strategies for interpreting problems, choosing operations and developing mathematical reasoning.

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Mesa de estudo com caderno mostrando uma regra de três composta, cálculo com x igual a 8, blocos com setas, livros de matemática, calculadora e caneta.

Problems & Reasoning12/09/20266 min read

Compound proportion with inverse quantities: decide by logic, not memorized arrows

Learn to identify direct and inverse relationships logically, solve two compound proportion problems, and check results with units and order of magnitude.

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Estudante resolvendo problemas de matemática em um caderno, com mapa de rotas, comparação de preços, tabela e calculadora ao redor.

Problems & Reasoning10/09/20266 min read

PISA 2025: what Level 2 mathematics requires — with 3 step-by-step solved problems

Understand what the OECD associates with Level 2 mathematics in PISA 2025 and practice with three original teaching problems, fully solved and explained.

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