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Task: read an article about releasing hand-reared kaka into a safe environment and answer questions about the research. Assessment focus: field investigations.

Students are asked to explain why the Southern Cross appears not to be in the same place in the night sky that it was a few months previously.

This task requires students to develop questions about their local geology and name possible information sources.

Students write a story about the water cycle using a given sequence of events that take place.

This practical task requires students to make observations of three different types of soils and record their observations in a chart.

For this practical task students investigate and report on what they noticed about a model river and how different sized materials are moved by the water.

For this practical students make observations about dissolving, and plan and carry out an investigation to find out what makes sugar dissolve more quickly.

From a diagram of an experimental set up, students answer questions based on fair testing principles. Questions cover the control of variables, and measurement of results.

This practical task investigates the effect of temperature on the rate at which corn pops. Students collect data and make a conclusion.

Describe methods for speeding up and slowing down melting of an ice cube using one of three provided objects, and explain why the methods would work. Assessment focus: planning an investigation.

This practical task requires students to describe to a partner their observations about an ice cube melting. Students then develop questions about what they observe.

This practical task requires students to make observations of the changes that occur in five common foods as they are cooked.

For this practical task students complete a table of observations for the following substances: vinegar, baking soda, and vinegar and baking soda mixed together.

For this practical task students follow a plan to determine the best temperature for the reaction of rennet with milk. Students need to make observations and write a report on their findings.

Plan an investigation to find out which of two students' predictions is correct, and identify how to recognise what a result would look like. Assessment focus: identifying what to measure or compare to answer a science question.

Students explain two ways to make salt dissolve faster when in cold water.

For this practical task students record their observations as an egg is poached in water.

Task: Identify which variables should be kept the same to compare reaction times. Assessment focus: control of variables.

This practical task requires students to plan and carry out a fair test to find out which paper type will soak up water the best.

Students read some information about testing the absorbency of different papers. They outline two features that need to be kept the same if the tests were to be fair.

Students complete a table for six common objects by stating the material used to make each object and a useful property of that material.

Students answer five questions about 'fair testing' for an outlined investigation.

Students outline four ways of improving a given plan for an investigation to make it a fair test.

Students are given information and a diagram about a drink bottle overflowing when it had been put into the freezer. Students are asked to explain why this happened and how they could prevent it.

Task: Plan a fair test to see if adding salt water to water affects how long it takes to freeze. Assessment focus: managing variables.