Space Telescopes Vocabulary Slides
GRADE 4 ELA • 4.RI.4 C1
Academic Word Meanings
The Power of Space Telescopes
Using context clues to unlock academic vocabulary in informational text.
I Do • We Do • You Do
Text: Dysart Schools (2026)
MISSION OBJECTIVE
What We Are Learning Today
STUDENT-FRIENDLY OBJECTIVE
I can figure out the meaning of tricky academic words by using clues the author leaves around the word—like definitions, restatements, and examples.
READING PROMPT
“As you read about space telescopes, pay attention to words you don’t know. What clues does the author give you to help figure out what those words mean?”
Standard 4.RI.4 C1 — Determine the meanings of general academic words and phrases.
Your Context Clue Toolkit
STRATEGY GUIDE
1. Definition Clue
The author defines the word right in the text, often using “meaning” or a comma.
2. Restatement Clue
The author says the same thing in a different way, often in the same or next sentence.
3. Example Clue
The author gives specific examples or comparisons that show what the word means.
1. Find the word 2. Look around it 3. Find the clue 4. Confirm it
Sentence Frame: “The word [___] means [___] because the text says ‘[exact quote].’”
I DO • TEACHER MODEL
Paragraph 1
Target Word: revolutionary
For centuries, humans could only look at the stars from the ground. However, the invention of space telescopes has been a revolutionary change in how we study the sky. This was a complete and total shift in science, allowing us to see parts of the universe that were once invisible to the human eye.
CLUE TYPE
Restatement Clue
MEANING
Completely new and different; a major change
CONFIRM
“a [major change] in how we study the sky”
PARAGRAPH 1 • QUESTION
Check Your Understanding
COMPREHENSION & CONTEXT CLUES
The author calls space telescopes a “revolutionary change.” What context clues in the text help you figure out what revolutionary means, and how did space telescopes change science?
Use the Frame: “The word revolutionary means ___ because the text says ‘___.’”
PARAGRAPH 1 • ANSWER
Model Answer & Evidence
RESTATEMENT CLUE
“The word revolutionary means completely new and different (a major change) because the text says ‘a complete and total shift in science.’”
How it changed science: Before space telescopes, humans could only look at stars from the ground. Now we can see parts of the universe that were once invisible to the human eye.
Notice: The restatement clue is right in the very next sentence!
I DO • TEACHER MODEL
Paragraph 2
Target Words: durable, functional
The most famous of these is the Hubble Space Telescope. Hubble is durable, meaning it is able to last a very long time in a tough environment. While most machines break down after a few years, Hubble has remained functional in the freezing cold of space for over three decades.
durable (Definition Clue)
Signal word “meaning” tells us it means able to last a long time in tough conditions.
functional (Restatement / Contrast)
Contrasted with “break down” → means working properly; still operating.
PARAGRAPH 2 • QUESTION
Partner Check
TURN AND TALK (1 MINUTE)
The author uses the word durable and explains it right away, and also uses functional. What do both words mean in your own words, and what exact clues in Paragraph 2 prove it?
Confirm Step: Substitute your meaning for functional back into the sentence—does it make sense?
PARAGRAPH 2 • ANSWER
Model Answer & Evidence
1. durable — Definition Clue
Durable means strong and able to last a long time because the text says “meaning it is able to last a very long time in a tough environment.”
2. functional — Restatement (Contrast) Clue
Functional means working properly because the text contrasts it with “most machines break down after a few years.”
Confirm: “Hubble has remained [working properly] in the freezing cold of space...” — Yes!
WE DO • TEACHER-LED
Paragraph 3
Target Word: superior
Recently, NASA launched the James Webb Space Telescope. This telescope is superior to older models. Unlike the smaller telescopes of the past that could only see basic light, the Webb telescope has much better technology that allows it to see through thick clouds of space dust to find hidden stars.
Annotate Together: Box superior • Star the clue phrase • Write the clue type
Definition / Restatement / Example?
PARAGRAPH 3 • QUESTION
Whole-Class Discussion
SHOW, DON’T JUST TELL
What does superior mean, and what does the author show in Paragraph 3 to prove the James Webb Space Telescope is superior to older models?
Push for Evidence: Don’t just say “it’s better”—quote what it can do!
PARAGRAPH 3 • ANSWER
Model Answer & Evidence
EXAMPLE CLUE
“The word superior means better than others or higher quality because the text says it has ‘much better technology that allows it to see through thick clouds of space dust to find hidden stars.’”
Why it’s an Example Clue: Older models could only see basic light, while Webb can see through space dust—a specific example of being better.
Confirm: “This telescope is [better than] older models.” — Makes sense!
WE DO • TEACHER-LED
Paragraph 4
Target Word: immense
The telescope’s mirror is immense. It is so large that it had to be folded up like a piece of origami just to fit inside the rocket for launch. Once in space, it unfolded to reach a size bigger than a school bus.
Annotate P3–4: Box immense • Star BOTH clue phrases • Write Clue Type
Tip: Look for TWO clues!
PARAGRAPH 4 • QUESTION
Double-Clue Detective
GATHER MULTIPLE CLUES
The author says the mirror is immense and gives two examples to show its size. What are the two examples, and how do they help you understand what immense means?
Think: Why compare the mirror to a school bus instead of just saying “very large”?
PARAGRAPH 4 • ANSWER
Model Answer & Evidence
EXAMPLE CLUES (x2)
“The word immense means extremely large or enormous because the text says it was ‘folded up like a piece of origami’ and reached a size ‘bigger than a school bus.’”
Why it helps: Comparing the mirror to a school bus makes its huge size easy to picture in our minds!
More clues = more confidence in our definition!
WE DO • PARTNER WORK
Paragraph 5
Target Word: equilibrium
The telescope must stay in a state of equilibrium. It needs a perfect balance of temperature to work correctly. To do this, it uses a giant sunshield to keep one side extremely hot while the other side remains incredibly cold.
Partner Task: Find the exact phrase in Paragraph 5 that defines equilibrium, identify the clue type, and complete the sentence frame together.
PARAGRAPH 5 • QUESTION
Partner Challenge
QUOTE THE EXACT WORDS
What does equilibrium mean, and how does the telescope keep itself in equilibrium in space?
Sentence Frame: “The word equilibrium means ___ because the text says ‘___.’”
PARAGRAPH 5 • ANSWER
Debrief Answer & Evidence
DEFINITION / RESTATEMENT CLUE
“The word equilibrium means a state of perfect balance because the text says ‘It needs a perfect balance of temperature to work correctly.’”
How it stays in equilibrium: It uses a giant sunshield to keep one side extremely hot and the other side incredibly cold.
Great job quoting the exact words from Paragraph 5!
WE DO • PARTNER WORK
Paragraph 6
Target Word: frugal
Because space missions are expensive, scientists must be frugal with their resources. They try to be very careful with money and equipment, using things like recycled parts or sharing data with other countries to save on costs.
Partner Check: Is this a definition, restatement, or example clue? Look closely at the very next sentence!
PARAGRAPH 6 • QUESTION
Partner Challenge
MEANING + EXAMPLES
What does frugal mean, why must scientists be frugal with their resources, and what two examples show how they save money?
Sentence Frame: “The word frugal means ___ because the text says ‘___.’”
PARAGRAPH 6 • ANSWER
Debrief Answer & Evidence
RESTATEMENT + EXAMPLE CLUES
“The word frugal means careful about not wasting money or resources because the text says ‘very careful with money and equipment.’”
Why & Examples: Space missions are expensive, so scientists use recycled parts and share data with other countries to save on costs.
Watch out: There’s a direct restatement clue right before the examples!
YOU DO • INDEPENDENT
Paragraph 7
Target Word: probe
By using these tools, we can probe the deepest parts of space. These machines allow us to carefully explore and search for answers about how the first galaxies were born billions of years ago.
Independent Work: Complete your CFU using your passage copy. Remember to quote the exact words from the text for every answer!
PARAGRAPH 7 • EXIT TICKET
Show What You Know
INDEPENDENT RESPONSE
The author uses the word probe as a verb—an action word. What context clues help you figure out what probe means here? How is this different from “probe” as a noun, like a space probe?
Success Criteria: Define probe AND quote the exact clue phrase using the sentence frame.
PARAGRAPH 7 • ANSWER & CLOSING
Model Answer & Reflection
RESTATEMENT CLUE
“The word probe means to carefully explore and search because the text says ‘carefully explore and search for answers.’”
Verb vs. Noun: Here, probe is an action (to search/investigate), whereas a space probe is a thing (a robotic spacecraft).
Closing Reflection: Which context clue type was easiest today—definition, restatement, or example? Which was hardest, and why?
