Carrying Out Enquiries

Section: Thinking and Working Scientifically | Syllabus: Cambridge Primary Stage 5 Science (0097)

Sorting, Classifying and Keys

Classify objects, materials or living things using observable features, test results or reliable secondary information.
A key uses a sequence of yes/no or either/or choices based on clear, easily observed differences.
Each choice in a key should split the remaining items into useful, smaller groups until a single item is identified.

Choose the piece of equipment designed for the quantity being measured.
Use equipment for its intended purpose and follow the planned precautions.
Record a sensible number of scale divisions instead of guessing extra digits that the equipment cannot actually show.

Choose the equipment designed for the quantity being measured

Repeat a measurement when it may vary naturally or when one result looks unusual.
Repeated results help check reliability and identify anomalies.
Tables need clear headings, with units in the headings rather than repeated in every cell.
Diagrams used to record observations should be large, clear and labelled.

Choose sources written by trusted scientific or educational organisations.
Select evidence that actually answers the question, and compare more than one source where possible.
Record the source so that another person can check it.

Worked Example: Choosing Equipment

Question: A learner must measure 25 cm³ of water and the temperature of the water. Name two pieces of equipment. [2]

Match each measurement to equipment designed for it. Answer

Use a measuring cylinder for 25 cm³ and a thermometer for temperature.

Interactive revision notes, videos and practice questions load below.