Skip to content
Philosophy · 3rd Year

Active learning ideas

Truth and Belief

This topic explores the traditional definition of knowledge as 'justified true belief' (JTB). Students examine the criteria that must be met for something to count as knowledge rather than just a lucky guess or a strong opinion. This is a core component of Epistemology in the NCCA framework. It encourages students to be more critical of their own certainties and the information they encounter online.

NCCA Curriculum SpecificationsNCCA Philosophy LO 2.1: Distinguish between knowing, believing and opinion.NCCA Philosophy LO 2.2: Explore the concept of truth and how it is established.
25–35 minPairs → Whole Class3 activities

Activity 01

Inquiry Circle35 min · Small Groups

Inquiry Circle: The JTB Checklist

Groups are given several scenarios (e.g., a horoscope coming true, a scientific discovery). They must apply the three criteria: Is it a belief? Is it true? Is it justified? They then present their verdict on whether it counts as 'knowledge'.

What is the difference between belief, opinion, and knowledge?
AnalyzeEvaluateCreateSelf-ManagementSelf-Awareness
Generate Complete Lesson

Activity 02

Think-Pair-Share25 min · Pairs

Think-Pair-Share: The Gettier Problem

Present a 'Gettier Case' where someone has a justified true belief that is only true by luck. Students discuss in pairs why this feels different from 'real' knowledge and try to suggest a fourth criteria for the checklist.

Is truth objective or subjective?
UnderstandApplyAnalyzeSelf-AwarenessRelationship Skills
Generate Complete Lesson

Activity 03

Gallery Walk30 min · Individual

Gallery Walk: Sources of Truth

Stations are set up for different sources of knowledge: Senses, Reason, Authority, and Intuition. Students move around, listing one thing they 'know' from that source and one reason that source might be unreliable.

How do we justify our deeply held beliefs?
UnderstandApplyAnalyzeCreateRelationship SkillsSocial Awareness
Generate Complete Lesson

A few notes on teaching this unit


Watch Out for These Misconceptions

  • If I believe it strongly enough, it becomes true for me.

    Philosophy distinguishes between subjective belief and objective truth. Using 'Perspective-Taking' exercises helps students see that while beliefs are personal, knowledge requires external justification and truth.

  • Knowledge and facts are exactly the same thing.

    A fact is a state of the world; knowledge is a person's relationship to that fact. Peer discussions about 'forgotten facts' help students see that knowledge requires an active mind to hold the belief.


Methods used in this brief