In this objective, children will learn that prefixes en- and em- add a sense of  “in, cause or make” to the bases or stems they combines with.  Over three 20-minute lessons, they will:

Understand how adding the prefix en- or em- changes the meaning of the base or stem Learn that prefix em- is an assimilated form of prefix en-  Build a range of word sums and recognise why and where the assimilated prefix em- is used Explore a range of bases and stems which combine with prefixes en- or em- and learn about their etymology  Revisit suffixing rules Use a matrix and word webs to explore building words with a range of bases, including free bases force, light and power

 Resources included:

 Editable PowerPoint covering three lessons (20 minutes each)  Teacher guidance with optional activities  Supporting worksheets   A range of practical activities including a code cracking task and an  ‘en- or em-’ game  2 fluency activities (with answers)  A reasoning activity (with answers)...