AC9S9I03 Year 9 Science

Content descriptor select and use equipment to generate and record data with precision to obtain useful sample sizes and replicable data, using digital tools as appropriate

Elaborations

• • Elaboration using an electronic balance that measures within the parameters of the required mass, and recording data to the correct number of significant figures using correct units
• • Elaboration using data loggers and choosing correct scale and appropriate output representation
• • Elaboration examining the degree of accuracy that different instruments provide, such as a measuring cylinder compared with a pipette, and recording data values to the correct degree of precision using appropriate scientific notation
• • Elaboration considering the replicability of data collected using different instruments, including the inaccuracies that may be introduced when taking measurements
• • Elaboration discussing the amount of data needed to produce a useful sample size and why sample size is important
• • Elaboration considering an appropriate sample size for the investigation, and how the use of digital tools might enable more-efficient data collection for larger sample sizes