A kindergarten teacher says to a student, "Say stand . Now say stand without the /t/." The student responds, " sand ." This task is designed primarily to assess the student's ability to:

manipulate individual phonemes in a spoken word

connect printed consonant letters to their matching sounds

recognize and produce rhyming words orally

blend onsets and rimes into whole words

Passage: The Lantern Mira's grandfather kept a brass lantern on the windowsill, though the house had had electric lights for years. Every evening he polished it and set it facing the dark road. When Mira asked why, he only said, "Some people still need to find their way home." The winter her uncle came back from the city, thin and quiet, the lantern was the first thing he touched. He held it for a long time before he said a word. Based on the passage, which inference about Mira's grandfather is best supported?

He kept the lantern as a sign of hope that someone would return.

He distrusted electric lights and wanted to save on bills.

He polished the lantern because he planned to sell it soon.

He used the lantern to light his own way along the road.

Teacher: How do you think Jamal felt at the end of the story? Lena: I think he was disappointed. Omar: Yeah, me too. A third-grade teacher records the small-group discussion above about a story. Which of the following teacher responses would best promote accountable talk at this point?

"Lena, what in the story makes you think Jamal was disappointed?"

"Good job, Lena. Let's move on to the next question on our sheet."

"Who else in the group liked the ending of the story the best?"

"That's not quite right, Lena. Jamal was actually feeling surprised."

A student needs to find the volume of a small, irregularly shaped rock. Which procedure is most appropriate?

Record the rise in water level when the rock is lowered into a graduated cylinder.

Measure the rock's length, width, and height with a metric ruler and multiply them.

Place the rock on a triple-beam balance and record its mass in grams.

Wrap a string around the rock's widest part and measure the string in centimeters.

A teacher is choosing sentences to introduce the word amphibians . Which sentence provides the most directive context for inferring the word's meaning?

Frogs and other amphibians start life in water and later live on land.

The amphibians at the pet store were much bigger than I expected.

My cousin says that amphibians are her favorite animals to draw.

We saw several amphibians when our class visited the nature center.

A fifth-grade teacher is explaining to students when to use a direct quotation instead of a paraphrase in a research report. Which of the following is the best reason to quote a source directly?

The author's exact wording is memorable or essential to the point.

Quoted passages do not need to be credited to the original source.

The student wants to make the report longer by including more of the source.

The student does not fully understand the passage and cannot explain it.

Which of the following was a direct result of the Columbian Exchange?

Potatoes from the Americas became a staple crop in much of Europe

Wheat from the Americas replaced rice as Asia's main grain

Horses native to the Americas were introduced to European farms

Smallpox from the Americas spread through European port cities

A class measures the height of the same bean plant once a week for six weeks. Which display would best show how the plant's height changed over time?

a line graph with time on the x-axis and height on the y-axis

a circle graph showing the share of total growth in each week

a histogram showing how many weeks fell in each height range

a line graph with height on the x-axis and time on the y-axis

OSAT Elementary Education (150 and 151)

Free OSAT Elementary Education Practice Questions

10 sample questions for the OSAT Elementary Education (150 and 151), with the correct answer and an explanation for each. No account needed. Try each one before you open the answer.

Sections covered on the exam: Foundations of Literacy, Word Study, Fluency, Vocabulary, Comprehension and Literature, Writing and Multimodal Literacies, Social Studies Skills & Civics, Number Sense and Operations, Algebra and Proportional Reasoning, Measurement, Geometry, and Data, Inquiry and Physical Science, Geography & History, Earth, Space, and Life Science, Health, Fitness, and the Arts.

Question 1 · Foundations of Literacy
A kindergarten teacher says to a student, "Say stand. Now say stand without the /t/." The student responds, "sand." This task is designed primarily to assess the student's ability to:
- A.connect printed consonant letters to their matching sounds
- B.recognize and produce rhyming words orally
- C.blend onsets and rimes into whole words
- D.manipulate individual phonemes in a spoken word
Show answer and explanation
Answer: D. manipulate individual phonemes in a spoken word
Removing one sound from a spoken word and saying what remains is phoneme deletion, an advanced phonemic awareness (manipulation) skill performed without print. Connecting printed consonant letters to their matching sounds is tempting, but the task is purely oral, so it involves no letters and does not measure phonics.
Question 2 · Comprehension and Literature
Passage: The Lantern Mira's grandfather kept a brass lantern on the windowsill, though the house had had electric lights for years. Every evening he polished it and set it facing the dark road. When Mira asked why, he only said, "Some people still need to find their way home." The winter her uncle came back from the city, thin and quiet, the lantern was the first thing he touched. He held it for a long time before he said a word.
Based on the passage, which inference about Mira's grandfather is best supported?
- A.He distrusted electric lights and wanted to save on bills.
- B.He polished the lantern because he planned to sell it soon.
- C.He used the lantern to light his own way along the road.
- D.He kept the lantern as a sign of hope that someone would return.
Show answer and explanation
Answer: D. He kept the lantern as a sign of hope that someone would return.
The grandfather sets the lantern facing the road and says that some people "still need to find their way home," and the uncle's return confirms the lantern's meaning as a hopeful welcome. The claim that he distrusted electric lights is tempting because the house had electricity, but the text gives no evidence of distrust or concern about cost.
Question 3 · Writing and Multimodal Literacies
Teacher: How do you think Jamal felt at the end of the story?
Lena: I think he was disappointed.
Omar: Yeah, me too.
A third-grade teacher records the small-group discussion above about a story. Which of the following teacher responses would best promote accountable talk at this point?
- A."Lena, what in the story makes you think Jamal was disappointed?"
- B."Good job, Lena. Let's move on to the next question on our sheet."
- C."Who else in the group liked the ending of the story the best?"
- D."That's not quite right, Lena. Jamal was actually feeling surprised."
Show answer and explanation
Answer: A. "Lena, what in the story makes you think Jamal was disappointed?"
Accountable talk asks students to support their ideas with evidence from the text, so prompting Lena to point to the part of the story behind her claim deepens the discussion. Simply praising her and moving on ends the reasoning before her claim has been grounded in the text.
Question 4 · Number Sense and Operations
An art teacher has 3/4 pound of clay. A student uses 2/3 of the clay to make a bowl. How much clay is left?
- A.1/2 pound
- B.1/12 pound
- C.1/4 pound
- D.1/3 pound
Show answer and explanation
Answer: C. 1/4 pound
If 2/3 of the clay is used, 1/3 of it remains, and 1/3 × 3/4 = 3/12 = 1/4 pound. The value 1/2 pound is the amount used (2/3 × 3/4), not the amount left, and 1/12 pound comes from subtracting 2/3 directly from 3/4 as if 2/3 were a weight rather than a fraction of the clay.
Question 5 · Inquiry and Physical Science
A student needs to find the volume of a small, irregularly shaped rock. Which procedure is most appropriate?
- A.Record the rise in water level when the rock is lowered into a graduated cylinder.
- B.Measure the rock's length, width, and height with a metric ruler and multiply them.
- C.Place the rock on a triple-beam balance and record its mass in grams.
- D.Wrap a string around the rock's widest part and measure the string in centimeters.
Show answer and explanation
Answer: A. Record the rise in water level when the rock is lowered into a graduated cylinder.
Water displacement measures the volume of an irregular solid: the rise in water level in milliliters equals the rock's volume in cubic centimeters. Multiplying length, width, and height works only for rectangular prisms, so it would give an inaccurate volume for an irregular rock.
Question 6 · Health, Fitness, and the Arts
A music score marks a passage with a crescendo symbol. How should the performers play the passage?
- A.Gradually faster
- B.Gradually slower
- C.Gradually softer
- D.Gradually louder
Show answer and explanation
Answer: D. Gradually louder
A crescendo is a dynamics marking that directs performers to grow gradually louder. Gradually faster is tempting because both terms describe change over time, but that is accelerando, which refers to tempo rather than dynamics.
Question 7 · Word Study, Fluency, Vocabulary
A teacher is choosing sentences to introduce the word amphibians. Which sentence provides the most directive context for inferring the word's meaning?
- A.The amphibians at the pet store were much bigger than I expected.
- B.Frogs and other amphibians start life in water and later live on land.
- C.My cousin says that amphibians are her favorite animals to draw.
- D.We saw several amphibians when our class visited the nature center.
Show answer and explanation
Answer: B. Frogs and other amphibians start life in water and later live on land.
Directive context gives readers enough information to infer meaning; naming a familiar example (frogs) and the defining trait of living first in water and then on land points the reader to the word's meaning. The nature-center sentence is tempting because it places amphibians in a natural setting, but it is nondirective: birds or insects could replace amphibians without changing the sense.
Question 8 · Writing and Multimodal Literacies
A fifth-grade teacher is explaining to students when to use a direct quotation instead of a paraphrase in a research report. Which of the following is the best reason to quote a source directly?
- A.Quoted passages do not need to be credited to the original source.
- B.The student wants to make the report longer by including more of the source.
- C.The author's exact wording is memorable or essential to the point.
- D.The student does not fully understand the passage and cannot explain it.
Show answer and explanation
Answer: C. The author's exact wording is memorable or essential to the point.
Direct quotations are best reserved for wording that is distinctive, powerful, or essential, such as a famous line or a precise definition; most other information should be paraphrased or summarized. Quoting a passage one does not understand is tempting for young researchers, but it signals that the student needs to reread rather than copy.
Question 9 · Writing and Multimodal Literacies
Which of the following was a direct result of the Columbian Exchange?
- A.Wheat from the Americas replaced rice as Asia's main grain
- B.Horses native to the Americas were introduced to European farms
- C.Potatoes from the Americas became a staple crop in much of Europe
- D.Smallpox from the Americas spread through European port cities
Show answer and explanation
Answer: C. Potatoes from the Americas became a staple crop in much of Europe
The Columbian Exchange moved plants, animals, and diseases between the Eastern and Western Hemispheres, and American crops such as potatoes and maize transformed diets in Europe. The horse distractor reverses the direction of exchange, because Europeans brought horses to the Americas, just as smallpox traveled from Europe to the Americas.
Question 10 · Inquiry and Physical Science
A class measures the height of the same bean plant once a week for six weeks. Which display would best show how the plant's height changed over time?
- A.a circle graph showing the share of total growth in each week
- B.a histogram showing how many weeks fell in each height range
- C.a line graph with time on the x-axis and height on the y-axis
- D.a line graph with height on the x-axis and time on the y-axis
Show answer and explanation
Answer: C. a line graph with time on the x-axis and height on the y-axis
Change over time in a continuous measurement is best shown with a line graph, and the independent variable (time) belongs on the x-axis. Reversing the axes places the dependent variable (height) on the horizontal axis and makes the trend harder to interpret.

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