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Investigating in Science
Thinking in Scientific Ways

Periscopes

Teachers' notes
Progress indicators
What the work shows Curriculum links The learning context Where to next

What the work shows

Nicola's periscope design shows how she can apply her knowledge and understanding of light. In discussion with others she recognises the strengths and weaknesses of her investigation and suggests improvements.

Nicola's periscope design

Nicola's periscope design

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Progress Indicators

Investigating in Science

Exploring a situation
After a series of observations Nicola makes her first model based on the following prompts from the teacher:

  • How well were you able to see around the corner?
  • What were some of the problems you had?
  • What changes would you make to your periscope?
  • What improvements would you expect these changes to make?

(see "Periscope Trial" in Nicola's periscope design).

Evaluating the investigative process as a continuous activity
Nicola looks for strengths and weaknesses in her investigation and suggests improvements in her design by:

  • changing the mirrors from plastic to glass
  • changing the structure from paper to cardboard
  • changing mirrors to glass for a smoother surface and clearer image
  • making the mirrors more stable by attaching them more securely.

(see "What we Found out" in Nicola's periscope design).

Reporting
Nicola presents an organised report linking her findings to her observations about her periscope (see Nicola's periscope design).

Thinking in Scientific Ways

Suggesting explanations
She suggests explanations supported by some evidence for changing the construction material of the periscope and securing the mirrors (see "Solution" in Nicola's periscope design).

Comparing and evaluating explanations
In Nicola's report on her periscope she explains why she changed her ideas referring to the evidence (see "What we Found out" in Nicola's periscope design).


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