A: Materials List

Correct Responses

• Identifies magnet and sieve (or similar).
• Identifies magnet alone or magnet plus material(s) other than sieve.
• Names only a sieve (or similar) or other material(s) (i.e. hands, spoon) consistent with procedure in Part B. [No magnet is identified.]

B: Procedure

Correct Responses

• Includes two steps using the magnet to isolate iron fillings first:
  • i) Use magnet to pick up iron filings.
  • ii) Use sieve or other material (mentioned in Part A) to separate pebbles and sawdust.
• Includes two steps using the magnet to isolate iron fillings second:
  • i) Use sieve or other material (mentioned in Part A) to isolate pebbles and/or sawdust.
  • ii) Use magnet to pick up iron filings.

Partial Responses

• Includes ONLY the separation of iron filings by magnet; no/incorrect separation of pebbles and/or sawdust.
• Includes ONLY the separation of pebbles and/or sawdust by sieve or other material (mentioned in Part A); no/incorrect step for isolation of iron filings.

Incorrect Response

• Mentions only separation (of the mixture) with no identification of how components are isolated.
• Other incorrect

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