Comparing Samples

1 Annotation 1
Uses scientific terminology to classify mixture and identify components 2 Annotation 2
Describes filter materials and explains intended effects 3 Annotation 3
Explains in detail function of charcoal 4 Annotation 4
Recognises change in classification of mixture as result of filtration 5 Annotation 5
Explains in detail how a physical effect involving light can be used to test the effectiveness of the procedure

1 Annotation 1
Describes step-by-step procedure of filter preparation 2 Annotation 2
Records observations during separate trials in tabulated form 3 Annotation 3
Describes in detail how experimental design was modified including reasoning for each change

1 Annotation 1
Gives detailed observations of results after modification 2 Annotation 2
Displays photographs with captions to illustrate experimental setup

1 Annotation 1
Uses scientific reasoning to explain observations 2 Annotation 2
Explains why experiment was not a fair test and how this limits insights that can be gained 3 Annotation 3
Recognises and analyses a design flaw of the filter 4 Annotation 4
Uses scientific reasoning to justify a proposed improvement to the design 5 Annotation 5
Uses evidence to support conclusion 6 Annotation 6
Suggests improvement to method including additional steps to guarantee safe potability

1 Annotation 1
Uses scientific terminology to classify the mixture and identify its components 2 Annotation 2
Describes filter materials used and explains their intended effects 3 Annotation 3
Recognises limitations of filtration process 4 Annotation 4
Displays photographs to illustrate experimental setup 5 Annotation 5
Describes step-by-step procedure of filter preparation

1 Annotation 1
Records observations during separate trials in tabulated form 2 Annotation 2
Lists modifications performed between trials 3 Annotation 3
Describes filter layout and explains reasoning for sequence of layers 4 Annotation 4
Demonstrates understanding of fair test 5 Annotation 5
Uses evidence to support conclusion 6 Annotation 6
Suggests improvement to method including additional steps to guarantee safe potability

1 Annotation 1
Uses scientific terminology to classify mixture and identify components 2 Annotation 2
Describes filter materials and explains intended effects 3 Annotation 3
Explains in detail function of charcoal 4 Annotation 4
Recognises change in classification of mixture as result of filtration 5 Annotation 5
Explains in detail how a physical effect involving light can be used to test the effectiveness of the procedure

1 Annotation 1
Describes step-by-step procedure of filter preparation 2 Annotation 2
Records observations during separate trials in tabulated form 3 Annotation 3
Describes in detail how experimental design was modified including reasoning for each change

1 Annotation 1
Gives detailed observations of results after modification 2 Annotation 2
Displays photographs with captions to illustrate experimental setup

1 Annotation 1
Uses scientific reasoning to explain observations 2 Annotation 2
Explains why experiment was not a fair test and how this limits insights that can be gained 3 Annotation 3
Recognises and analyses a design flaw of the filter 4 Annotation 4
Uses scientific reasoning to justify a proposed improvement to the design 5 Annotation 5
Uses evidence to support conclusion 6 Annotation 6
Suggests improvement to method including additional steps to guarantee safe potability