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Tangrams 3 – exploring halves

Use tangram pieces and strategies such as visualising to explore the connection between fractions and surface area of 2D shapes. Then challenge students to explore all the different ways they can show half using a given rectangle.

Additional details

Year level(s) Year 3, Year 4
Audience Student, Teacher
Purpose Teaching resource, Teaching strategies
Format Video
Teaching strategies and pedagogical approaches Questioning, Targeted teaching, Concrete Representational Abstract model
Keywords rectangle, square, triangle, parallelogram, half,, area, visualising, surface area, shape, reasoning, problem solving, explicit teaching

Curriculum alignment

Curriculum connections Numeracy
Strand and focus Number, Geometry, Measurement, Build understanding
Topics Fractions, Shapes and objects
AC: Mathematics content descriptions
ACMNA058 Model and represent unit fractions including 1/2, 1/4, 1/3, 1/5 and their multiples to a complete whole
ACMNA077 Investigate equivalent fractions used in contexts
National numeracy learning progression Interpreting fractions - InF2, InF3
Understanding units of measurement

Copyright details


NSW Department of Education


© State of New South Wales (Department of Education), 2020 Creative Commons Attribution 4.0, unless otherwise indicated.