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Detail of Roger Shimomura’s Shimomura Crossing the Delaware.
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Morphology lessonsSuffixes

Suffix Lesson 1

Noun makers: actions and qualities

Turn actions and qualities into nouns that name processes, results, and states.

5 targets with matrices3 core roots revisited8 mastery checks

THE GIST

The idea behind these word parts

Noun-making suffixes can name actions, results, people, and qualities. Construct becomes construction when the process is named.

Go deeper · how the parts work in context

Construct is a verb meaning build. Construction is a noun naming the process or result. The -ity family names qualities too, but spelling can change: active → activity.

con + struct + ion → construction

Construction of the school took a year.

Construction names the building process here; it is the subject of the sentence.

Word parts suggest a meaning; the sentence helps confirm it. If the clues are not enough, check a dictionary.

EXPLORE THE WORD PARTS

Meaning, connections, and practice

Choose a word part. Read its gist, explore its map and matrix, then answer its three checks. Open the extra explanation whenever you need it.

How to use a matrix

Leading part + base + ending → word. Choose cells from left to right. Only paths that make one of the listed words are enabled. means no part is added.

The center can be a root or a whole word. Some cells contain combining forms or grouped endings. Related bases can change spelling, as in scribe/script or mit/miss; follow the spelling notes.

Keep a word for comparison, then select another word to see which parts and meanings changed.

01

-tion / -sion / -ion

act, process, or result

noun maker

The gist: collection means the act or result of collecting. The clue -tion / -sion / -ion connects it to act, process, or result.

Why it works · examples & details

The shared clue is the meaning or word job added by the ending: act, process, or result. Compare collection (the act or result of collecting) with decision (the act or result of deciding). The complete word’s definition is more specific than the word-part clue.

col + lect + ion → collection
The act of gathering things or the things gathered. It works as a noun in this example.

Meaning & spelling: The spelling changes with the base; treat these as related noun-forming patterns.

The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.

Explore -tion / -sion / -ion · map, matrix & checks
  • collectionthe act or result of collecting
  • decisionthe act or result of deciding
Suffix connections map: -tion / -sion / -ion

Compare this ending across different bases. Explain what it adds to each word’s meaning or grammatical job. Select a word to load its path in the matrix below.

-tion / -sion / -ionact, process, or result
  • col + lect + ionnoun

    The act of gathering things or the things gathered.

  • trans + miss + ionnoun

    The act of sending something across.

  • con + struct + ionnoun

    The act or result of building.

Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”

Build with -tion / -sion / -ion 3 word paths

-tion / -sion / -ion: act, process, or result. Choose parts from left to right, or choose a word below. Dimmed choices do not continue a word in this matrix.

Prefix / leading part

Root or whole base

Suffix / ending

col + lect + ion → collection

The act of gathering things or the things gathered.

noun

Compare two paths

collection: The act of gathering things or the things gathered.
construction: The act or result of building.

Say which parts stay and which change. Explain how the meaning or word job changes.

Read every word sum and meaning
Word sumWordMeaning
col + lect + ioncollectionThe act of gathering things or the things gathered.
trans + miss + iontransmissionThe act of sending something across.
con + struct + ionconstructionThe act or result of building.

Check your understanding

Use the map and matrix as needed. A wrong answer gives you a clue; try again or open the explanation.

0 of 3 answered correctly
Which word is built by con + struct + ion?

Which word means “The act of sending something across”?

Which word sum builds collection?

02

-er / -or

person or agent who does something

person noun

The gist: teacher means a person who teaches. The clue -er / -or connects it to person or agent who does something.

Why it works · examples & details

The shared clue is the meaning or word job added by the ending: person or agent who does something. Compare teacher (a person who teaches) with actor (a person who acts). The complete word’s definition is more specific than the word-part clue.

act + or → actor
A person who performs a role or takes part in an event. It works as a noun in this example.

In a sentence: A worker became a historical actor by helping organize a strike rather than simply accepting conditions.

The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.

Explore -er / -or · map, matrix & checks
  • teachera person who teaches
  • actora person who acts
Suffix connections map: -er / -or

Compare this ending across different bases. Explain what it adds to each word’s meaning or grammatical job. Select a word to load its path in the matrix below.

-er / -orperson or agent who does something
  • teach + er

    A person who teaches.

  • act + ornoun

    A person who performs a role or takes part in an event.

    A worker became a historical actor by helping organize a strike rather than simply accepting conditions.

  • ex + port + ernoun

    A person or business that sells goods to buyers in other countries or regions.

    A Hawaiian sugar exporter depended on plantation workers to produce the crop.

Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”

Build with -er / -or 3 word paths

-er / -or: person or agent who does something. Choose parts from left to right, or choose a word below. Dimmed choices do not continue a word in this matrix.

Prefix / leading part

Root or whole base

Suffix / ending

teach + er → teacher

A person who teaches.

Compare two paths

teacher: A person who teaches.
exporter: A person or business that sells goods to buyers in other countries or regions.

Say which parts stay and which change. Explain how the meaning or word job changes.

Read every word sum and meaning
Word sumWordMeaning
teach + erteacherA person who teaches.
act + oractorA person who performs a role or takes part in an event.
ex + port + erexporterA person or business that sells goods to buyers in other countries or regions.

Check your understanding

Use the map and matrix as needed. A wrong answer gives you a clue; try again or open the explanation.

0 of 3 answered correctly
Which word is built by ex + port + er?

Which word means “A person who performs a role or takes part in an event”?

Which word sum builds teacher?

03

-ment

action, result, or state

noun maker

The gist: development means the process or result of developing. The clue -ment connects it to action, result, or state.

Why it works · examples & details

The shared clue is the meaning or word job added by the ending: action, result, or state. Compare development (the process or result of developing) with enjoyment (the state or result of enjoying). The complete word’s definition is more specific than the word-part clue.

com + mit + ment → commitment
A pledge or sustained dedication to something. It works as a noun in this example.

In a sentence: Commitment to a collective struggle helped garment workers continue demanding change.

The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.

Explore -ment · map, matrix & checks
  • developmentthe process or result of developing
  • enjoymentthe state or result of enjoying
Suffix connections map: -ment

Compare this ending across different bases. Explain what it adds to each word’s meaning or grammatical job. Select a word to load its path in the matrix below.

-mentaction, result, or state
  • develop + ment

    The process or result of developing.

  • enjoy + ment

    The state or result of enjoying.

  • com + mit + mentnoun

    A pledge or sustained dedication to something.

    Commitment to a collective struggle helped garment workers continue demanding change.

Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”

Build with -ment 3 word paths

-ment: action, result, or state. Choose parts from left to right, or choose a word below. Dimmed choices do not continue a word in this matrix.

Prefix / leading part

Root or whole base

Suffix / ending

develop + ment → development

The process or result of developing.

Compare two paths

development: The process or result of developing.
commitment: A pledge or sustained dedication to something.

Say which parts stay and which change. Explain how the meaning or word job changes.

Read every word sum and meaning
Word sumWordMeaning
develop + mentdevelopmentThe process or result of developing.
enjoy + mentenjoymentThe state or result of enjoying.
com + mit + mentcommitmentA pledge or sustained dedication to something.

Check your understanding

Use the map and matrix as needed. A wrong answer gives you a clue; try again or open the explanation.

0 of 3 answered correctly
Which word is built by com + mit + ment?

Which word means “The state or result of enjoying”?

Which word sum builds development?

04

-ness

state or quality

noun maker

The gist: kindness means the quality of being kind. The clue -ness connects it to state or quality.

Why it works · examples & details

The shared clue is the meaning or word job added by the ending: state or quality. Compare kindness (the quality of being kind) with darkness (the state of being dark). The complete word’s definition is more specific than the word-part clue.

weak + ness → weakness
A lack of strength or power. It works as a noun in this example.

In a sentence: Division was a weakness that employers could exploit during labor disputes.

The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.

Explore -ness · map, matrix & checks
  • kindnessthe quality of being kind
  • darknessthe state of being dark
Suffix connections map: -ness

Compare this ending across different bases. Explain what it adds to each word’s meaning or grammatical job. Select a word to load its path in the matrix below.

-nessstate or quality
  • kind + ness

    The quality of being kind.

  • dark + ness

    The state of being dark.

  • weak + nessnoun

    A lack of strength or power.

    Division was a weakness that employers could exploit during labor disputes.

Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”

Build with -ness 3 word paths

-ness: state or quality. Choose parts from left to right, or choose a word below. Dimmed choices do not continue a word in this matrix.

Prefix / leading part

Root or whole base

Suffix / ending

kind + ness → kindness

The quality of being kind.

Compare two paths

kindness: The quality of being kind.
weakness: A lack of strength or power.

Say which parts stay and which change. Explain how the meaning or word job changes.

Read every word sum and meaning
Word sumWordMeaning
kind + nesskindnessThe quality of being kind.
dark + nessdarknessThe state of being dark.
weak + nessweaknessA lack of strength or power.

Check your understanding

Use the map and matrix as needed. A wrong answer gives you a clue; try again or open the explanation.

0 of 3 answered correctly
Which word is built by weak + ness?

Which word means “The state of being dark”?

Which word sum builds kindness?

05

-ity / -ty

state or quality

noun maker

The gist: equality means the state or quality of being equal. The clue -ity / -ty connects it to state or quality.

Why it works · examples & details

The shared clue is the meaning or word job added by the ending: state or quality. Compare equality (the state or quality of being equal) with loyalty (the quality of being loyal). The complete word’s definition is more specific than the word-part clue.

equ + al + ity → equality
The condition of having the same rights, standing, or treatment. It works as a noun in this example.

In a sentence: Students compared lessons about equality with the hierarchy of plantation life.

Meaning & spelling: The base may change spelling when this ending is added, as in active → activity.

The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.

Explore -ity / -ty · map, matrix & checks
  • equalitythe state or quality of being equal
  • loyaltythe quality of being loyal
Suffix connections map: -ity / -ty

Compare this ending across different bases. Explain what it adds to each word’s meaning or grammatical job. Select a word to load its path in the matrix below.

-ity / -tystate or quality
  • equ + al + itynoun

    The condition of having the same rights, standing, or treatment.

    Students compared lessons about equality with the hierarchy of plantation life.

  • loyal + ty

    The quality of being loyal.

  • cred + ible + itynoun

    The quality of deserving belief or trust.

    The poisoned peace toast destroys the credibility of Tucker’s promise.

    Before -ity, -ible takes the form -ibil-: credible + ity → credibility.

Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”

Build with -ity / -ty 3 word paths

-ity / -ty: state or quality. Choose parts from left to right, or choose a word below. Dimmed choices do not continue a word in this matrix.

Prefix / leading part

Root or whole base

Suffix / ending

equ + al + ity → equality

The condition of having the same rights, standing, or treatment.

noun

Students compared lessons about equality with the hierarchy of plantation life.

Compare two paths

equality: The condition of having the same rights, standing, or treatment.
credibility: The quality of deserving belief or trust.

Say which parts stay and which change. Explain how the meaning or word job changes.

Read every word sum and meaning
Word sumWordMeaning
equ + al + ityequalityThe condition of having the same rights, standing, or treatment.
loyal + tyloyaltyThe quality of being loyal.
cred + ible + itycredibilityThe quality of deserving belief or trust.

Check your understanding

Use the map and matrix as needed. A wrong answer gives you a clue; try again or open the explanation.

0 of 3 answered correctly
Which word is built by cred + ible + ity?

Which word means “The quality of being loyal”?

Which word sum builds equality?

DECODE · FOLLOW THE CLUES

Use the clue without overtrusting it

A word part gives you a strong clue—not always a complete definition.

  1. Spot the part.Underline the exact letters you recognize.
  2. Recall the clue.Say the meaning you learned for that part.
  3. Test the whole word.Combine the clue with the other parts and the sentence.
Decode decision

Spot decision. The suffix -tion / -sion / -ion carries the clue act, process, or result. Here, it helps you understand: the act or result of deciding.

Decode actor

Spot actor. The suffix -er / -or carries the clue person or agent who does something. Here, it helps you understand: a person who acts.

Decode enjoyment

Spot enjoyment. The suffix -ment carries the clue action, result, or state. Here, it helps you understand: the state or result of enjoying.

MEANING & GRAMMAR

What changes when the word changes?

Compare the meanings, then test which form fits the sentence.

construct

build or create: a verb

construction

the act or result of building: a noun

Explain the difference

Struct keeps build. The ending changes how the word works in a sentence.

Which -ity noun completes the sentence? “The workers are active. Their ___ continues.”

A common mistake—and how to avoid it

Teacher has an -er meaning a person who teaches. Colder uses comparative -er, more cold. Corner does not split into corn plus that suffix.

REVIEW · BRING ROOTS BACK

Keep these roots working

Before opening each matrix, recall the root’s meaning. Build the review words, then explain the whole word. These core roots return in later lessons with new word forms.

Some review words use today’s affixes; others bring back an earlier pattern. Not every affix can attach to every root.

struct

Revisit this root lesson
Recall the root’s meaning, then check

build

Build with struct 4 word paths

struct: build. Choose parts from left to right, or choose a word below. Dimmed choices do not continue a word in this matrix.

Prefix / leading part

Root or whole base

Suffix / ending

con + struct + ion → construction

The process of building or creating something.

noun

The construction of racial inequality involved laws that gave workers different rights.

Compare two paths

construction: The process of building or creating something.
reconstruct: To build again or piece together an account of the past.

Say which parts stay and which change. Explain how the meaning or word job changes.

Read every word sum and meaning
Word sumWordMeaning
con + struct + ionconstructionThe process of building or creating something.
con + structconstructTo build or create something.
con + struct + iveconstructiveHelping to build, improve, or solve something.
re + con + structreconstructTo build again or piece together an account of the past.

act

Revisit this root lesson
Recall the root’s meaning, then check

do

Build with act 4 word paths

act: do. Choose parts from left to right, or choose a word below. Dimmed choices do not continue a word in this matrix.

Prefix / leading part

Root or whole base

Suffix / ending

act + or → actor

A person who performs a role or takes part in an event.

noun

A worker became a historical actor by helping organize a strike rather than simply accepting conditions.

Compare two paths

actor: A person who performs a role or takes part in an event.
active: Taking part or doing something.

Say which parts stay and which change. Explain how the meaning or word job changes.

Read every word sum and meaning
Word sumWordMeaning
act + oractorA person who performs a role or takes part in an event.
actactTo do something rather than remain passive.
act + ionactionSomething done to achieve an aim.
act + iveactiveTaking part or doing something.

form

Revisit this root lesson
Recall the root’s meaning, then check

shape

Build with form 4 word paths

form: shape. Choose parts from left to right, or choose a word below. Dimmed choices do not continue a word in this matrix.

Prefix / leading part

Root or whole base

Suffix / ending

form + al + ity → formality

An official procedure or required step.

noun

A signed treaty was more than a formality when officials used it to justify taking Cherokee land.

Compare two paths

formality: An official procedure or required step.
reformer: A person who works to improve laws or institutions.

Say which parts stay and which change. Explain how the meaning or word job changes.

Read every word sum and meaning
Word sumWordMeaning
form + al + ityformalityAn official procedure or required step.
formformTo create or bring something into existence.
re + formreformTo change a practice or institution in order to improve it.
re + form + erreformerA person who works to improve laws or institutions.

Use it: Write one sentence about history using a review word. Underline its root, circle its affixes, and explain why that word fits your sentence.

QUICK QUIZ · RECALL & APPLY

Recall the parts. Apply the pattern.

Check every target, then complete three applied questions. If you miss one, revisit its matrix and try again. Finish with the new-word challenge below.

0 of 8 checks mastered
1 of 8Which meaning is taught for -tion / -sion / -ion?
2 of 8Which meaning is taught for -er / -or?
3 of 8Which meaning is taught for -ment?
4 of 8Which meaning is taught for -ness?
5 of 8Which meaning is taught for -ity / -ty?
6 of 8 · APPLY & REVIEWIn construction, what core meaning does struct contribute?
7 of 8 · APPLY & REVIEWWhich word is built by act + or?
8 of 8 · APPLY & REVIEWChoose the form that fits the sentence: The ceremony had a high degree of ___.

CHECK IN CONTEXT

Make sense of a new word

Use both the word parts and the sentence. Open a hint if you need a starting point.

The short sentences and clear headings improved the passage’s readability.

What does readability mean in this sentence?

Expand your thinking · explain it or use it
Check your sentence
  • Does the word’s established meaning fit your idea?
  • Does its form fit the grammar of your sentence?
  • Can you identify a meaningful part and explain its contribution?

These optional notes are not saved, graded, or submitted.

COME BACK · RETRIEVE IT AGAIN

Remember after a break

Return in two days, then about a week later. Before opening the notes, recall a meaning, rebuild two words, and use one in a new sentence.

Start with -tion / -sion / -ion. What does it mean? Which two words connect to it?

Check after you recall

-tion / -sion / -ion: act, process, or result. For example: collection and decision. Explain how each connects to the meaning.

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Lesson-quiz progress and review dates are saved only on this device, not submitted to your teacher. Word-part and context practice checks reset when you reload the page.