Use roots for thought, proof, questions, sequence, and structure.
6 targets with matricesBuild, compare, and explain9 mastery checks
THE GIST
The idea behind these word parts
A root can help you understand a new word by connecting it to a familiar family. Struct means build in construct, reconstruct, and reconstruction.
Go deeper · how the parts work in context
Re- adds again. Reconstruction names rebuilding. In history, reconstructing the past means piecing together an account from evidence, not physically rebuilding the past.
re + con + struct + ion → reconstruction
After the fire, reconstruction of the library took two years.
Here reconstruction means the process of rebuilding.
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
log/logue
word or reason
The gist: dialogue means words exchanged between people. The clue log/logue connects it to word or reason.
Why it works · examples & details
The shared clue is the core meaning: word or reason. Compare dialogue (words exchanged between people) with logic (reasoning). The complete word’s definition is more specific than the word-part clue.
dia + logue → dialogue An exchange of words between people. It works as a noun in this example.
The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.
Explore log/logue · map, matrix & checks
dialoguewords exchanged between people
logicreasoning
Word-family cluster map: log/logue
Follow one root into related words. Read each connection and explain how the shared meaning develops. Select a word to load its path in the matrix below.
Read the family first.
log/logueword or reason
dia + loguenoun
An exchange of words between people.
mono + loguenoun
A long speech by one person.
log + icnoun
A system of reasoning.
Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”
Build with log/logue 3 word paths
log/logue: word or reason. 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
dia + logue → dialogue
An exchange of words between people.
noun
What changed?
Starting word
Selected word
Compare two paths
dialogue: An exchange of words between people. logic: A system of reasoning.
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
dia + logue
dialogue
An exchange of words between people.
mono + logue
monologue
A long speech by one person.
log + ic
logic
A system of reasoning.
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
mem
remember
The gist: memory means the ability to remember. The clue mem connects it to remember.
Why it works · examples & details
The shared clue is the core meaning: remember. Compare memory (the ability to remember) with memorial (something that helps people remember). The complete word’s definition is more specific than the word-part clue.
mem + ory → memory The ability to remember. It works as a noun in this example.
The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.
Explore mem · map, matrix & checks
memorythe ability to remember
memorialsomething that helps people remember
Word-family cluster map: mem
Follow one root into related words. Read each connection and explain how the shared meaning develops. Select a word to load its path in the matrix below.
Read the family first.
memremember
mem + orynoun
The ability to remember.
memor + ialnoun
Something that keeps a person or event in memory.
memor + izeverb
To learn something so it can be recalled.
Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”
Build with mem 3 word paths
mem: remember. 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
mem + ory → memory
The ability to remember.
noun
What changed?
Starting word
Selected word
Compare two paths
memory: The ability to remember. memorize: To learn something so it can be recalled.
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
mem + ory
memory
The ability to remember.
memor + ial
memorial
Something that keeps a person or event in memory.
memor + ize
memorize
To learn something so it can be recalled.
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
03
prov
prove
The gist: prove means show to be true. The clue prov connects it to prove.
Why it works · examples & details
The shared clue is the core meaning: prove. Compare prove (show to be true) with approve (judge or accept as good). The complete word’s definition is more specific than the word-part clue.
prove → prove To show that a claim is true. It works as a verb in this example.
Meaning & spelling: Use prove and approve here—not provisional or improvise, which come from other histories.
The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.
Explore prov · map, matrix & checks
proveshow to be true
approvejudge or accept as good
Word-family cluster map: prov
Follow one root into related words. Read each connection and explain how the shared meaning develops. Select a word to load its path in the matrix below.
Read the family first.
provprove
proveverb
To show that a claim is true.
prove + ableadjective
Able to be shown to be true.
Drop the final silent e before the vowel suffix: prove + able → provable.
dis + proveverb
To show that a claim is false.
Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”
Build with prov 3 word paths
prov: prove. 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
prove → prove
To show that a claim is true.
verb
What changed?
Starting word
Selected word
Compare two paths
prove: To show that a claim is true. disprove: To show that a claim is false.
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
prove
prove
To show that a claim is true.
prove + able
provable
Able to be shown to be true.
dis + prove
disprove
To show that a claim is false.
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
04
rog
ask
The gist: interrogate means ask questions closely. The clue rog connects it to ask.
Why it works · examples & details
The shared clue is the core meaning: ask. Compare interrogate (ask questions closely) with interrogation (the act of questioning). The complete word’s definition is more specific than the word-part clue.
inter + rog + ate → interrogate To ask someone questions closely. It works as a verb in this example.
The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.
Explore rog · map, matrix & checks
interrogateask questions closely
interrogationthe act of questioning
Word-family cluster map: rog
Follow one root into related words. Read each connection and explain how the shared meaning develops. Select a word to load its path in the matrix below.
Read the family first.
rogask
inter + rog + ateverb
To ask someone questions closely.
inter + rog + ate + ionnoun
The act of close questioning.
Drop the final silent e before the vowel suffix: interrogate + ion → interrogation.
inter + rog + ate + ornoun
A person who questions someone closely.
Drop the final silent e before the vowel suffix: interrogate + or → interrogator.
Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”
Build with rog 3 word paths
rog: ask. 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
inter + rog + ate → interrogate
To ask someone questions closely.
verb
What changed?
Starting word
Selected word
Compare two paths
interrogate: To ask someone questions closely. interrogator: A person who questions someone closely.
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
inter + rog + ate
interrogate
To ask someone questions closely.
inter + rog + ate + ion
interrogation
The act of close questioning.
inter + rog + ate + or
interrogator
A person who questions someone closely.
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
05
sequ/secu
follow
The gist: sequence means an order in which things follow. The clue sequ/secu connects it to follow.
Why it works · examples & details
The shared clue is the core meaning: follow. Compare sequence (an order in which things follow) with consecutive (following one after another). The complete word’s definition is more specific than the word-part clue.
sequ + ence → sequence An order in which things follow each other. It works as a noun in this example.
The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.
Explore sequ/secu · map, matrix & checks
sequencean order in which things follow
consecutivefollowing one after another
Word-family cluster map: sequ/secu
Follow one root into related words. Read each connection and explain how the shared meaning develops. Select a word to load its path in the matrix below.
Read the family first.
sequ/secufollow
sequ + encenoun
An order in which things follow each other.
con + secut + iveadjective
Following one after another without a gap.
con + secut + ive + lyadverb
One after another without a gap.
Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”
Build with sequ/secu 3 word paths
sequ/secu: follow. 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
sequ + ence → sequence
An order in which things follow each other.
noun
What changed?
Starting word
Selected word
Compare two paths
sequence: An order in which things follow each other. consecutively: One after another without a gap.
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
sequ + ence
sequence
An order in which things follow each other.
con + secut + ive
consecutive
Following one after another without a gap.
con + secut + ive + ly
consecutively
One after another without a gap.
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
06
stru/struct
build
The gist: construct means build together. The clue stru/struct connects it to build.
Why it works · examples & details
The shared clue is the core meaning: build. Compare construct (build together) with structure (something built or organized). The complete word’s definition is more specific than the word-part clue.
con + struct → construct To build or create something. It works as a verb in this example.
In a sentence: Colonial lawmakers helped construct a racial hierarchy by assigning unequal punishments to Black and white servants.
The map and matrix show established words. Matching letters alone do not prove a meaningful relationship.
Explore stru/struct · map, matrix & checks
constructbuild together
structuresomething built or organized
Word-family cluster map: stru/struct
Follow one root into related words. Read each connection and explain how the shared meaning develops. Select a word to load its path in the matrix below.
Read the family first.
stru/structbuild
con + structverb
To build or create something.
Colonial lawmakers helped construct a racial hierarchy by assigning unequal punishments to Black and white servants.
con + struct + ionnoun
The process of building or creating something.
The construction of racial inequality involved laws that gave workers different rights.
con + struct + iveadjective
Helping to build, improve, or solve something.
A constructive comparison of Ireland and North America explains both shared colonial methods and important differences.
re + con + structverb
To build again or piece together an account of the past.
Takaki uses different groups’ experiences to reconstruct a fuller account of American history.
re + con + struct + ionnoun
Rebuilding; also the period of rebuilding and contested rights after the Civil War.
Reconstruction raised the question of whether freedom would include land and economic independence.
struct + urenoun
The arrangement of parts within a system.
The structure of sharecropping kept many freedpeople dependent on landowners and credit.
Explain the connection: “These words share ___. In ___ it helps mean ___; in ___ it helps mean ___.”
Build with stru/struct 6 word paths
stru/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 → construct
To build or create something.
verb
Colonial lawmakers helped construct a racial hierarchy by assigning unequal punishments to Black and white servants.
What changed?
Starting word
Selected word
Compare two paths
construct: To build or create something. structure: The arrangement of parts within a system.
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
con + struct
construct
To build or create something.
con + struct + ion
construction
The process of building or creating something.
con + struct + ive
constructive
Helping to build, improve, or solve something.
re + con + struct
reconstruct
To build again or piece together an account of the past.
re + con + struct + ion
reconstruction
Rebuilding; also the period of rebuilding and contested rights after the Civil War.
struct + ure
structure
The arrangement of parts within a system.
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 logic
Spot logic. The root log/logue carries the clue word or reason. Here, it helps you understand: reasoning.
Decode memorial
Spot memorial. The root mem carries the clue remember. Here, it helps you understand: something that helps people remember.
Decode approve
Spot approve. The root prov carries the clue prove. Here, it helps you understand: judge or accept as good.
Compare the meanings, then test which form fits the sentence.
construct
build or create
reconstruct
build again or piece back together
Explain the difference
The whole base construct stays. Re- adds again. In history, reconstructing an event means piecing together an account using evidence.
A common mistake—and how to avoid it
A small letter difference can matter: memorial, something that preserves memory, is not the same word as memorize, learn for recall. Connect the root, then check the full word.
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 historian’s reconstructive work pieced together the lost account from letters and photographs.
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 log/logue. What does it mean? Which two words connect to it?
Check after you recall
log/logue: word or reason. For example: dialogue and logic. Explain how each connects to the meaning.
Review dates are saved only on this device and shown on the course hub. No notifications are sent. Written responses are not saved.
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.
