1. Mrs. Frisby and the Crow Vocabulary Words
treacherous
alarmingly
fierce
ineffectively
prospect
Open Court 4th Grade Unit 1 Risks and Consequences
Lesson 1 Mrs. Frisby and the Crow Melissa Lape and Molly McCullough – Wilson Elementary

2. treacherous “Use context clues”
1. Mrs. Frisby undertook a treacherous journey to bring Timothy some medicine.
2. The high winds and heavy snow made the mountain road treacherous.
treacherous- not safe because of hidden dangers (page 20)
Melissa Lape – Wilson Elementary

3. alarmingly “Use context clues”
1. The crow banked alarmingly, and for a moment Mrs. Frisby was frightened.
2. The branch fell alarmingly, scaring the hikers around the campfire.
alarmingly – filled with a sense of danger (page 28)
Melissa Lape – Wilson Elementary

4. fierce “Use context clues”
1. The small kitten pretended to be fierce.
2. The fierce twister blew the roof off the farmhouse.
fierce- wild or threatening in appearance
Melissa Lape – Wilson Elementary

5. ineffectively “Use context clues”
1. The crow was sitting on the fence, pecking ineffectively at the string tried to his legs.
2. The birds pecked ineffectively at the empty feeder.
ineffectively useless: in vain
Melissa Lape – Wilson Elementary

6. prospect “Use context clues”
1. Mrs. Frisby was frightened by
the prospect of walking through
the woods alone at night.
2. Bobby was nervous about the prospect of starting at a new school.
prospect a future possible event; something that could happen
Melissa Lape – Wilson Elementary

7. Mrs. Frisby and the Crow – Vocabulary Words
treacherous - not safe because of the hidden dangers
alarmingly – filled with a sense of danger
fierce - wild or threatening in appearance
ineffectively - useless: in vain
prospect- a future possible event; something that could happen
Melissa Lape – Wilson Elementary

8. Mrs. Frisby and the Crow – Vocabulary Quiz
_____ not safe because of the hidden dangers
_____ filled with a sense of danger
_____ wild or threatening in appearance
_____ useless: in vain
______ a future possible event; something that could happen
alarmingly
prospect
ineffectively
treacherous
fierce
Melissa Lape – Wilson Elementary

9. wrap is a root word. wrapped wrapping Word Knowledge
A root word is the word that has the main meaning that can then be changed by adding
prefixes (beginnings) or suffixes (endings).
wrapped
When the suffix –ed is added to wrap the final consonant, p, is doubled.
wrapping
When the suffix –ing is added to wrap the final consonant, p, is doubled.
Open Court 4th Grade Unit 1 Risks and Consequences
Lesson 1 Mrs. Frisby and the Crow Melissa Lape – Wilson Elementary

10. These words contain the sound /aw/.
Word Knowledge
These words contain the sound /aw/.
caught
stalked
squawking
gnawing
Melissa Lape – Wilson Elementary

11. nervous treacherous dangerous marvelous Word Knowledge
These words all have a root word plus the
suffix –ous which is pronounced /u//s/.
nervous
treacherous
dangerous
marvelous
Melissa Lape – Wilson Elementary

12. These words contain short-vowel sounds.
Word Knowledge
These words contain short-vowel sounds.
victims
pasture
bottomless
shrubs
silver
Melissa Lape – Wilson Elementary

13. Mom wrapped the sandwich.
Word Knowledge –
Sentences
Mom wrapped the sandwich.
Identify the doubled consonant.
- Double p in wrapped
What suffix causes the doubling?
- ed forms a past tense verb
Melissa Lape – Wilson Elementary

14. Jeremy was caught in the trap.
Word Knowledge –
Sentences
Jeremy was caught in the trap.
Identify the word with the /aw/ sound.
- caught
Melissa Lape – Wilson Elementary

15. The other choice would be dangerous, too.
Word Knowledge –
Sentences
The other choice would be dangerous, too.
Identify the word with the -ous ending.
- dangerous
What are other words with the –ous ending?
Melissa Lape – Wilson Elementary

16. Silver can be used to make coins.
Word Knowledge – Sentences
Silver can be used to make coins.
Identify the words with short vowel sounds.
- silver, can
Melissa Lape – Wilson Elementary