Lung capacity investigation

The pupils carried out a series of investigations in science. The investigations involved the class measuring and recording the lung capacity, height and weight of different pupils.

The teacher reminded the class, through a brief demonstration, how to use ICT to draw graphs. Then the class discussed the range of charting options available in the software, including scatter graphs and best-fit lines.

Next, the pupils tested the hypothesis 'The more you weigh, the more air you can fit in your lungs.' They entered data in a spreadsheet and produced a variety of graphs to help them with their investigations.

They entered their records into a spreadsheet and produced charts. Finally, they annotated their charts, drawing conclusions about the hypothesis.

To use a computer model to identify patterns and relationships.

To interpret information and check it is relevant and reasonable.

To form a conclusion on the evidence presented.

In this example Ryan has collected, designed and entered data into a spreadsheet. He used the software to create a chart and he used the graphic representation of the data to identify visually a linear relationship. Then he annotated his scattergram with a line of best fit.

Ryan has identified a pattern in the chart that supports the hypothesis he was asked to test. His response to the teacher's questions indicates that he understands his model was based on a limited amount of data. He has made suggestions about extending the work, noting that adding additional data would make the findings more reliable.

This example illustrates aspects of work at level 3. Ryan has used ICT to organise and share his findings with the teacher as a response to a short, focused task. His response to the teacher shows that he is beginning to consider questions of validity and plausibility.

To make further progress, Ryan could be given opportunities to carry out additional investigations and construct a database to organise and interrogate data. He might combine information from different sources and produce a report for a specific audience.