උසස් පෙළ (දේශීය විෂය නිර්දේශය) – තර්ක ශාස්ත්‍රය

Vidumaga Education Institute - Matale

Logic and Scientific method

A/L Logic

A/L Logic and Scientific Method - Online, Sinhala medium

Anora Higher Educational Institute

A/L and O/L Classes

A/L Logic

A/L Logic

A/L Logic

A/L Science, Arts and Technology Classes

A/L Logic and Scientific Method

A-Three Higher Education Institute