What rubbish!

Year 4
Stem Unit Preview

Problem / Challenge

The seagulls and local wild life have gotten into the bins again! The school yard is a mess! What can we do to prevent these animals from messing up the school grounds and at the same time create a waste management system that is sustainable?


Design a model of a rubbish bin that promotes sustainable waste management and prevents seagulls and other animals from getting into them.


Australian Curriculum Links


Science Understanding

  • Living things depend on each other and the environment (ACSSU073)
  • Forces (ACSSU076)

Science as a Human Endeavour

  • Science helps people understand the effect of their actions (ACSHE051)

Science Inquiry Skills

  • Questions and predictions (ACSIS053)
  • Plan an investigation (ACSIS054)
  • Elements of fair tests, measuring and recording  data (ACSIS055)
  • Data representation (ACSIS057)
  • Comparing data with predictions (ACSIS215)
  • Reflecting on the investigation (ACSIS058)
  • Communicate scientific ideas and information (ACSIS060)

Design and Technologies

Technologies and society

  • Occupations and factors impacting on the design of products, services and environments (ACTDEK010)

Engineering principles and systems

  • Force and properties of materials (ACTDEK011)

Materials and technologies specialisations

  • Suitability of materials, systems, components, tools and equipment (ACTDEK011)

Design Process


Number and Algebra

  • Develop mental and written strategies and use digital technologies for multiplication and division (ACMNA076)
  • Solve problems involving purchases (ACMNA080)

Measurement and Geometry

  • Use scaled instruments to measure (ACMMG084)
  • Compare areas of regular and irregular shapes (ACMMG087)

 Statistics and Probability

School Overview

South George Town Primary School is a government school located in George Town, Northern Tasmania. The school caters for children from Kindergarten to Year 6 from the surrounding community. South George Town Primary School currently has 283 students.