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TEACHER PLD

Climate change resources – planning pathways

Climate change is one of the world’s big issues. It is also a big topic to tackle in the classroom. The Hub’s planning pathways interactive suggests ways in which climate change can be broken ...

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Humans and the water cycle

We are becoming increasingly aware of our impacts on nature, but unfortunately many of the things we do have become so ingrained in our way of life that it is hard to change. Different countries ...

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Scientific modelling

In science, a model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central ...

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Melting and freezing

Water can exist as a solid (ice), liquid (water) or gas (vapour or gas). Adding heat can cause ice (a solid) to melt to form water (a liquid). Removing heat causes water (a liquid) to freeze to ...

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Ocean temperature

The temperature of the ocean determines what form the water takes. Most of the ocean is liquid water, but if it gets cold enough, it turns to solid ice, or if it gets hot enough, it can pass into ...

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Insulation

In Antarctica, winter temperatures can vary from -70ºC to -15ºC – it is one of the coldest places to live on earth. To survive in the Antarctic, keeping warm becomes a very important focus, and ...

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Bioindicators

A bioindicator is a living organism that gives us an idea of the health of an ecosystem. Some organisms are very sensitive to pollution in their environment, so if pollutants are present, the ...

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Water density

Water density changes with temperature and salinity. Density is measured as mass (g) per unit of volume (cm³). Water is densest at 3.98°C and is least dense at 0°C (freezing point). Why does ice ...

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Soil formation

New Zealand has a wide variety of landscapes. A day’s sightseeing journey might include volcanic plateaus, rolling hills, river basins and coastal lands. It is easy to notice how the scenery ...

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ACTIVITY

Build a marine food web

In this activity, students build their own food web using images of organisms from the marine ecosystem. This activity can be done indoors on paper or outdoors on a tarmac surface using chalk. By ...

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The ocean and Earth’s systems and cycles

The ocean plays an important part in several Earth systems and cycles. This is hardly surprising, as it covers two-thirds of the planet’s surface. It is difficult to study any of these systems ...

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Climate change, melting ice and sea level rise

One implication of climate change is sea level rise. Sea level is the average height of the ocean relative to the land, between the high and low tides. The rising global temperature is causing ...

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Renewable energy sources

Renewable energy is fuel that comes from a source that can be replenished in a short amount of time. This includes solar, wind, water, geothermal power and bioenergy. While renewable energy ...

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ACTIVITY

Carbon dioxide emissions calculator

This activity requires access to two Internet sites: a carbon emissions calculator and a school emissions calculator. Students can use the online calculator to calculate and compare the amount of ...

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ACTIVITY

Ocean acidification and eggshells

In this activity, students observe how chicken eggs can be used to simulate the potential effects of increasing ocean acidity on marine animals with calcium carbonate shells or skeletons, for ...

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Antarctic life and ecosystems

Antarctica – a land of extremes Antarctica is the highest, whitest, driest, coldest and windiest continent on Earth. It’s so cold that creatures often retreat to the sea to warm up. Add 24 hours ...

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Fertiliser

Just as we have essential needs for our growth, plants also have essential needs for their survival. These include: sunlight air water nutrients appropriate temperature. As long as plants have ...

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Climate change, science and controversy

Lately I’ve noticed something odd happening in the world of science. For the first time in my lifetime, scientists are under attack. Simon Lamb This is geologist Simon Lamb’s opening statement in ...

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New Zealand’s National Science Challenges

As New Zealanders looking to the future, we are faced with many opportunities – and challenges. These include improving the health of all our people, advancing our economic growth, protecting our ...

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Climate change – a wicked problem for classroom inquiry

Wicked problems are problems that are incredibly complicated and difficult to solve. In fact, solving one aspect may reveal or create other problems – but that doesn’t mean we mustn’t try! Often ...

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