Assessment for Learning is an effective way of actively involving students in their learning.  Each session plan comes with suggestions about how to organise activities and worksheets that may be used with students.

If you teach primary science, see the headings below to find out how to use this resource:

Skill development

Children will develop their working scientifically skills by:

  • Selecting and planning the most appropriate ways to answer science questions, recognising and controlling variables where necessary, including:
    • Carrying out comparative tests.
  • Drawing conclusions and raising further questions that could be investigated, based on their data and observations.
  • Using appropriate scientific language and ideas to explain, evaluate and communicate their methods and findings.

Learning outcomes

Children will:

  • Compare and group together different kinds of rocks on the basis of their appearance and simple physical properties.

Concepts supported

Children will learn:

  • That the movement of different-sized rocks (debris) can be linked to the volume and/speed of water flowing over it.

Suggested activity use

The activity could be used as a whole class investigation, applying skills and knowledge to plan and carry out a fair test. Children could work in small groups to identify and investigate a different variable before reporting back to the rest of the class with their findings. This activity also provides opportunities for cross-curricular links with Geography.

Practical considerations

To carry out this investigation, you will need guttering of different widths and lengths, along with a selection of sand, gravel and soil.

This investigation provides an excellent opportunity for children to work outdoors.