Active learning ideas
This unit traces the lifecycle of materials, from their extraction as raw resources to their refinement into everyday products. Students investigate how glass comes from sand, plastic from oil, and metals from ore. This aligns with the NCCA 'Environmental awareness and care' strand, as it prompts students to consider the finite nature of resources and the energy required for processing.
Activity 01
Students research one material (e.g., aluminum) and create a 'map' showing its journey from a mine to a soda can. The class rotates to see the environmental impact at each stage.
Where do materials like glass, plastic, and metal come from?
Activity 02
Students are given a list of items (wool sweater, plastic bottle, wooden chair, nylon bag). They discuss in pairs which are 'raw' and which are 'processed,' and what changes were made to the material.
How are raw materials processed into usable goods?
Activity 03
Students use 'chocolate chip cookies' to simulate mining. They must extract the 'ore' (chips) with tools while trying to keep the 'land' (cookie) intact, discussing the difficulty of land restoration.
What is the environmental cost of mining?
A few notes on teaching this unit
Watch Out for These Misconceptions
Materials like plastic are 'natural' because they come from the Earth.
While the raw source (oil) is natural, plastic is a synthetic material created through intense chemical processing. Comparing a piece of wood to a plastic spoon helps students see the difference between raw and highly refined materials.
We will never run out of metals or minerals.
These are non-renewable resources. A 'resource depletion' game where students take 'minerals' from a jar faster than they can be replaced helps them understand the concept of finite resources.
Methods used in this brief
Plastics and Pollution
A critical look at the use of plastics, their chemical durability, and their impact on ecosystems. Students evaluate alternatives to single-use plastics.
8 methodologies
Renewable Energy and Conservation
Students explore renewable energy sources and the importance of energy conservation. They discuss the role of science in addressing climate change.
8 methodologies