Contains a question: Why are there small gaps between the rails on a railway track? And a scaffolding sheet to help students to write an explanation.


  • expansion task.ppt

About this resource


Created: Jun 1, 2010

Updated: Aug 19, 2015

Report a problem

This resource is designed for US teachers. View UK version .

0 Reviews

0(no rating)
  • This resource hasn't been reviewed.

Categories & Grades