The Prefixes 'il-', 'im' and 'ir' - PowerPoint

An educational resource for Year 3 and 4 students focuses on understanding and using the prefixes 'il-', 'im-', and 'ir-' which all mean 'not'. These prefixes are fundamental in forming opposites of certain adjectives, and the lesson aims to teach children when to use each one correctly. For instance, the word 'legal' becomes 'illegal', indicating something that is not allowed by law. The resource provides clear definitions and examples, such as 'immature' for someone not fully grown or acting childishly, and 'irregular' for something that is not even in shape or does not follow a standard rule or pattern.

The teaching material further explains the rules for using these prefixes, such as 'il-' being added to root words beginning with 'l', 'im-' for those starting with 'm' or 'p', and 'ir-' for root words commencing with 'r'. For all other letters, the prefix 'in-' is used. Students are encouraged to apply these rules through various exercises, including worksheets where they add the correct prefixes to root words and find definitions for newly formed words. Additionally, the resource includes engaging activities like writing sentences using words with these prefixes and even a joke corner to make learning more enjoyable.