Bendy ruler

This task is about fair testing.

Question

Ana wants to find out how to bend the ruler to make an object go up as high as she can.

  1. She bends the ruler a lot and flicks a large ball.
  2. She bends the ruler a bit and flicks a small ball.
hand bending ruler a lot with a large ball hand bending ruler a bit with a small ball
Photography by Kerry Parker (NZCER)
 
a)  i)  Is this a fair test? (Circle one)

    • Yes

    • No

ii) Explain your answer.
Published on https://newzealandcurriculum.tahurangi.education.govt.nz