This page lists Introductory resources for teachers. These polar resources are suitable for ages ~11-14 (UK key stage 3) and ages 15-16 years (UK GCSE). Introductory-level articles are highlighted with a yellow flash on the website.
See a list of Introductory articles here.
Other resources
The Scientific Committee for Antarctic Research (SCAR) has a list of educational resources here.
There are a number of glaciated landscapes resources on the Time for Geography website.