B. Foundations of Language · Listening, Speaking and Word Power

Root Words from Latin and Greek

B2.1 B2.2 A3About 45 minutes

Learning goals

I can explain that many English words are built on roots from Latin and Greek.
I can find a root in a word and tell what it means.
I can use a root plus prefixes and suffixes to figure out a word's meaning.
I can read science and social studies words built from roots.

Words to know

root
A base that came from another language, often Latin or Greek. Many roots, like port or graph, can't stand alone as an English word but still carry meaning.

Latin
The language of ancient Rome. Many English words come from it.

Greek
The language of Greece. Ancient Greek gave English many science words.

word family
Words that share a base or root, like transport, portable, import and export.

Let's start with a mystery

What do a telescope, a telephone and a television have in common? They all start with tele-, an old Greek word part meaning far.

telescope: tele (far) + scope (look) → a tool to look at far things
telephone: tele (far) + phone (sound) → a tool to hear sound from far away
television: tele (far) + vision (seeing) → seeing things from far away

Word parts like tele, scope and phone are roots. Learn one root, and you can understand a whole word family.

Where do roots come from?

English borrowed lots of words from other languages over hundreds of years. Many of our longer words, especially in science, come from Latin (the language of ancient Rome) and Greek.

Unlike bases such as help or play, many roots can't stand alone as English words. You'll never say "I'll port the box." But port still carries meaning (carry) inside transport, portable, import and export.

The Latin root port means carry. It is inside transport, portable, import and export.

Latin root	Meaning	Examples
port	carry	transport, portable, import, export
rupt	break	erupt, interrupt, disrupt
struct	build	structure, construct, construction
spect	look	inspect, spectator, spectacles
dict	say	predict, dictionary, contradict
tract	pull, drag	tractor, attract, subtract
aud	hear	audio, audience, audible
vis, vid	see	visible, vision, video
scrib, script	write	describe, scribble, script

Some Latin roots

Greek root	Meaning	Examples
tele	far	telescope, telephone, television
scope	look at, see	microscope, telescope, periscope
phon	sound	microphone, telephone, symphony
graph	write, draw	autograph, paragraph, photograph
micro	small	microscope, microphone
bio	life	biology, biography
geo	earth	geography, geology
therm	heat	thermometer, thermos
auto	self	autograph, automatic, autobiography
photo	light	photograph, photosynthesis
meter	measure	thermometer, speedometer

Some Greek roots

Metre or meter?

In Canada we spell the unit of length metre (a 100-metre race). But measuring tools usually end in -meter: thermometer, speedometer. Both come from the Greek root meaning measure.

Worked example

Let's use a root and a prefix

Read: Please don't interrupt while someone is speaking.

Prefix: inter- means between.
Root: rupt means break.
Put it together: break in between.
Check: when you interrupt, you break in between someone's words. ✅

interrupt = inter + rupt: to break in while someone is talking.

Worked example

Let's take apart a science word

Read: We read the temperature on the thermometer.

Find the roots: therm (heat) + o (a joining letter) + meter (measure).
Put them together: a tool that measures heat.
Check: a thermometer tells how hot or cold it is. ✅

thermometer = a tool for measuring heat (temperature).

Two science-and-books words built from Greek roots: thermometer (heat + measure) and autobiography (self + life + write).

Worked example

Let's take apart a word with three roots

Read: She wrote an autobiography.

auto = self.
bio = life.
graph + y = writing (graph means write).
Put them together: writing about your own life.
Compare: a biography is the story of someone's life written by another person. An autobiography is written by the person themself.

An autobiography is a book a person writes about their own life.

Just for fun

Riddle: What would you call a telescope for your ears?

A telephone! (tele = far, phone = sound)

Hands-on activity

Root word web

You need: a large piece of paper, markers and a dictionary (a print one, or a children's online dictionary with a grown-up).

Choose one root from the tables: port, spect, struct, graph, phon or scope.
Write it in a bubble in the middle of the page with its meaning.
Draw lines out to every word you can think of that uses the root. Use the dictionary to find more. Aim for 6 or more words.
Next to each word, write a short meaning built from its parts.
Look around your home: do you have any of the things on your web? (a thermometer, a microphone, a photograph, a portable speaker?)
Teach your web to someone in your family.

Your turn

What does the root spect mean? Read spectator.

Read portable. What does it mean?

What does microscope mean, using its roots?

Read: The volcano might erupt. What does erupt mean?

What does geo mean? Name a school subject with it.

Which root means hear: aud or vis?

Read predict. Use the parts to explain it.

More practice: warm-up

What does port mean?

What does bio mean?

What does graph mean?

Find the root that means far in telescope.

What does struct mean?

More practice: on your own

Explain the difference between import and export.

Read: The magnet will attract the paper clips. Explain attract using the root.

What would a biologist study? Use the parts.

Read audible. What does it mean? Use it in a sentence.

Why do so many science words come from Latin and Greek?

Challenge

Read photograph. Use the roots to explain why the word fits.

Make up a new word using two roots from the lesson, and tell what it would mean. (It doesn't have to be a real word!)

Read: The construction crew inspected the structure before the spectators arrived. Find three words with Latin roots and explain each.

Check your understanding

Quiz

What does the root rupt mean?

A telescope is a tool for...

Which word has a root that means carry?

What does biography mean?

Which root means heat?

Where do many English science words come from?

What does audience mean, using its root?

For parents and teachers

Big idea: Grade 4 B2.1 and B2.2: using morphemes, including bases that come from Latin and Greek roots, to read and understand new words, especially subject-area vocabulary (an A3 cross-curricular connection). A handful of roots unlocks hundreds of science and social studies words.

How to help at home:

Go on a "root walk" through the kitchen or the car: thermometer, microwave, speedometer, portable.
When your child meets a new science word, ask: "Do you see a root you know?"
Keep a root list on the fridge and add to it.

Common difficulties:

Expecting every root to be a word by itself. Explain that many roots only appear inside words.
Over-applying roots (for example, port in portrait or porcupine). Encourage checking whether the meaning fits; roots are clues, not rules.
Meanings that drifted over time. Some words no longer match their roots exactly; use context and a dictionary to confirm.