Covering the key principles and concepts in the teaching and learning of mathematics in elementary schools, this text provides trainee and practicing teachers with a quick and easy reference to what they need to know for their course, and in the classroom. The entries are arranged alphabetically, and each contains a brief definition, followed by an explanation and discussion, practical examples, and annotated suggestions for further reading.

Conservation of Quantity

Conservation of quantity


In mathematics and science, conservation of quantity refers to the principle that quantities such as number, length, mass and volume are invariant under certain transformations. Pupils’ confident and appropriate use of the principle of conservation of such quantities is a key indicator of their ...

locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles