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MIP2601 Assignment 1 – Understanding and Applying the
Van Hiele Model
Semester 1, 2026
Due Date: 13 May 2026
Section A: Conceptual — Understanding the Van Hiele Model
The Van Hiele Model of Geometric Thinking, developed by
Pierre and Dina van Hiele in 1957, provides a framework for
understanding how learners develop geometric reasoning.
The model asserts that students progress through five
distinct levels of geometric understanding, starting from
simple visual recognition and advancing to highly abstract
reasoning and formal proof construction. Learning geometry
is sequential, meaning that a strong foundation at lower
levels is necessary for mastery at higher levels. Instruction
that assumes knowledge beyond a learner’s current Van
Hiele level can hinder understanding, so teaching must be
carefully aligned with learners’ cognitive development.
Language, tasks, and instructional strategies should all
reflect the learners’ current level to ensure meaningful
learning.
The first level, visualization, involves recognizing shapes
based primarily on appearance. Learners at this stage can
identify squares, circles, or triangles, but may do so based
on overall shape rather than understanding properties. The
, second level, analysis, focuses on understanding and
describing the properties of shapes, such as the number of
sides, angles, or symmetry. Learners at this level can
describe a square as having four equal sides and four right
angles. The third level, informal deduction, emphasizes
classifying shapes based on properties and understanding
relationships among them. For example, learners can explain
that all squares are rectangles, but not all rectangles are
squares. The fourth level, formal deduction, involves
constructing proofs using logical reasoning, definitions, and
theorems, allowing learners to justify geometric relationships
systematically. Finally, the fifth level, rigor, is characterized
by abstract and axiomatic thinking, where learners compare
geometric systems and work with advanced concepts in both
Euclidean and non-Euclidean contexts.
Teaching geometry effectively requires attention to these
levels. Instruction must be level-appropriate, starting with
visualization and progressing to analysis, classification, and
eventually formal proof. Tasks should be carefully
sequenced to scaffold learning, and language must be
introduced gradually to support understanding. By aligning
teaching strategies with the Van Hiele levels, educators
ensure learners can progress confidently through
increasingly complex geometric concepts.
Section B: Diagnostic Task Analysis — Determining Van
Hiele Levels
Diagnostic tasks are essential tools for understanding
learners’ geometric thinking. Designing tasks that reveal