Prior to this objective, teachers should assess the suggested morphemes for a setting description using the provided materials. If learning is secure, proceed to the suffix -ary objective; otherwise, refer to resources for additional support on bases fact, fect, face and fice - Y5, suffix -ous - Y3 and suffix -ous Y4.
In this objective, children will learn that suffix -ary is a vowel suffix of Latin origin and is often combined with bases and stems to form words thatcan function as nouns or adjectives and carry a sense of “related to”.
Over three 20-minute lessons, they will:

Combine suffix -ary with bases and stems that need the connecting vowel letter u for smooth pronunciation 
Learn about the etymology of new bases and stems 
Revisit suffixing rules
Sort words into free bases and stems
Use matrices to explore words with base mort and base dict
Use words suffix -ary in sentences
Combine suffix -ary with words ending in suffix -ion 
Solve word sums
Build word families

Resources included:

Editable PowerPoint covering 3 lessons (20 minutes each)
Teacher guidance with optional activities
Supporting worksheets 
Damaged dictionary - practical task
2 fluency activities (with answers)
A reasoning activity (with answers)...