Use sentence context to tell ongoing action, an activity noun, regular past, and completed forms.
2 targets with matrices3 core roots revisited5 mastery checks
THE GIST
The idea behind these word parts
Grammar endings need a sentence. Reading names an activity in “Reading helps”; it is part of a verb phrase in “I am reading.”
Go deeper · how the parts work in context
An -ing form can work in different ways. In “The students are constructing a model,” are constructing is the verb phrase. Similarly, an -ed form can mark a past action or help describe a noun.
con + struct + ing → constructing
The students are constructing a model.
Are constructing is the verb phrase describing what the students are doing.
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
-ing
ongoing action or the activity itself
grammar ending
The gist: reading means an action in progress or the activity of reading. The clue -ing connects it to ongoing action or the activity itself.
Why it works · examples & details
The shared clue is the meaning or word job added by the ending: ongoing action or the activity itself. Compare reading (an action in progress or the activity of reading) with swimming (an action in progress or the activity of swimming). The complete word’s definition is more specific than the word-part clue.
read + ing → reading The activity of making meaning from written language. It works as a noun in this example.
In a sentence: Careful reading reveals whose voices the Master Narrative leaves out.
Meaning & spelling: -ing alone does not show present time; the helping verb and context do that work.
The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.
Explore -ing · map, matrix & checks
readingan action in progress or the activity of reading
swimmingan action in progress or the activity of swimming
Suffix connections map: -ing
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.
Read the family first.
-ingongoing action or the activity itself
read + ingnoun
The activity of making meaning from written language.
Careful reading reveals whose voices the Master Narrative leaves out.
swim + ing
An action in progress or the activity of swimming.
Double the final m before -ing: swim + ing → swimming.
con + struct + ingverb form
Building something, as in They are constructing a bridge.
Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”
Build with -ing 3 word paths
-ing: ongoing action or the activity itself. 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
read + ing → reading
The activity of making meaning from written language.
noun
Careful reading reveals whose voices the Master Narrative leaves out.
What changed?
Starting word
Selected word
Compare two paths
reading: The activity of making meaning from written language. constructing: Building something, as in They are constructing a bridge.
Say which parts stay and which change. Explain how the meaning or word job changes.
Read every word sum and meaning
Word sum
Word
Meaning
read + ing
reading
The activity of making meaning from written language.
swim + ing
swimming
An action in progress or the activity of swimming.
con + struct + ing
constructing
Building something, as in They are constructing a bridge.
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
02
-ed
regular past or completed form
grammar ending
The gist: walked means a regular past action. The clue -ed connects it to regular past or completed form.
Why it works · examples & details
The shared clue is the meaning or word job added by the ending: regular past or completed form. Compare walked (a regular past action) with finished (a regular past or completed form). The complete word’s definition is more specific than the word-part clue.
walk + ed → walked A regular past action.
Meaning & spelling: Irregular verbs such as went and seen do not use the regular -ed pattern.
The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.
Explore -ed · map, matrix & checks
walkeda regular past action
finisheda regular past or completed form
Suffix connections map: -ed
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.
Read the family first.
-edregular past or completed form
walk + ed
A regular past action.
finish + ed
A regular past or completed form.
trans + port + edverb form
Carried across, as in They transported the supplies.
Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”
Build with -ed 3 word paths
-ed: regular past or completed form. 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
walk + ed → walked
A regular past action.
What changed?
Starting word
Selected word
Compare two paths
walked: A regular past action. transported: Carried across, as in They transported the supplies.
Say which parts stay and which change. Explain how the meaning or word job changes.
Read every word sum and meaning
Word sum
Word
Meaning
walk + ed
walked
A regular past action.
finish + ed
finished
A regular past or completed form.
trans + port + ed
transported
Carried across, as in They transported the supplies.
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
DECODE · FOLLOW THE CLUES
Use the clue without overtrusting it
A word part gives you a strong clue—not always a complete definition.
Spot the part.Underline the exact letters you recognize.
Recall the clue.Say the meaning you learned for that part.
Test the whole word.Combine the clue with the other parts and the sentence.
Decode swimming
Spot swimming. The suffix -ing carries the clue ongoing action or the activity itself. Here, it helps you understand: an action in progress or the activity of swimming.
Decode finished
Spot finished. The suffix -ed carries the clue regular past or completed form. Here, it helps you understand: a regular past or completed form.
Compare the meanings, then test which form fits the sentence.
Reading helps me learn.
reading names an activity: noun use
I am reading a letter.
am reading describes an ongoing action: verb phrase
Explain the difference
The same -ing form does different jobs. Examine the whole sentence, including any helping verb.
A common mistake—and how to avoid it
-ed can mark past tense or appear in other constructions. “They painted the door” and “the painted door” use the same form differently. The ending alone does not settle the job.
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.
tract: pull or draw. 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
at + tract → attract
To draw someone or something toward a place or goal.
verb
Tobacco profits helped attract English settlers to Virginia.
What changed?
Starting word
Selected word
Compare two paths
attract: To draw someone or something toward a place or goal. extract: To take or draw something out of a larger source.
Say which parts stay and which change. Explain how the meaning or word job changes.
Read every word sum and meaning
Word sum
Word
Meaning
at + tract
attract
To draw someone or something toward a place or goal.
at + tract + ion
attraction
Something that draws interest or encourages movement toward it.
at + tract + ive
attractive
Likely to draw interest or desire.
ex + tract
extract
To take or draw something out of a larger source.
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.
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 class is reconstructing the damaged model, putting its pieces back together.
Expand your thinking · explain it or use itCheck 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 -ing. What does it mean? Which two words connect to it?
Check after you recall
-ing: ongoing action or the activity itself. For example: reading and swimming. 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.
