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The Mystery of the Cactus Arm

What could be whispering outside Oliver’s window? And what is it trying to tell him?

By Dusti Bowling
From the October/November 2020 Issue

Learning Objective: Students will identify plot points by analyzing how an action the main character takes starts an inner conflict and what he does to resolve it.

Lexile: 500L-600L, 600-700L
Guided Reading Level: S
DRA Level: 40
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Plot

In this story, Oliver’s actions lead to a big conflict, or problem. Look for how it builds up and then is solved.

I stand under the saguaro cactus in my front yard with my next-door neighbor, Calvin. The cactus towers over us, at least five times our height. Its trunk-like body and large curving arms reach for the cloudless Arizona sky.

“Oliver,” Calvin says. “I bet five dollars you can’t make that arm fall off.” He’s always betting me like this. Last week he bet five dollars I couldn’t catch a tarantula hawk, which is a nasty wasp. I ended up with the most painful sting of my life. But that was still better than having to deal with Calvin making fun of me at school if I’d chickened out.

A wooden support beam is wedged under one of the saguaro’s arms. My parents put it there to hold the arm up after a tree branch fell on it, causing it to nearly break off. I push on the beam, but it’s pretty stuck. “I don’t know,” I say, kicking at it lightly. “My parents are trying to save it.”

Calvin narrows his eyes and grins. “I’ll bet you 10 dollars.”

I’m tempted. I could put the money toward the new video game I’ve been wanting—Animal Crossing. But it’s still a bad idea. “Nah,” I say. “My parents might get mad.”

Calvin rolls his eyes. “You’re such a chicken.”

Here he goes again with his taunting. Why did that guy have to live next door to me?

I lean on the beam a little. “I don’t think so,” I say, but I’m sure Calvin senses he’s wearing me down.

“Fine,” he says. “Fifteen dollars. That’s all the money I have.”

Whoa. He’s never bet me that much before. Fifteen dollars would definitely be enough to buy Animal Crossing, and maybe Calvin would finally leave me alone once and for all.

I kick a little harder at the beam. It budges. I know I shouldn’t do it, but that arm is on its way out anyway. How long could it possibly hold on? “Deal,” I say.

I glance back at my house to make sure no one’s watching and kick at the beam as hard as I can. It moves about an inch. My toes sting, but I keep kicking it. The beam eventually clatters to the ground in a cloud of dust, forcing us to jump out of its way.

The saguaro arm sways and sags, but it doesn’t fall. Calvin pumps his fist. “You lose!”

“Not so fast,” I say, picking up a large rock. I chuck it at the arm. It bounces off, and the arm sways again. I start grabbing every rock I find and hurling them at the arm. It begins to tilt, finally twisting and tearing off at the joint, plummeting to the ground in another puff of dust.

“Yes!” I shout. There won’t be any teasing at school tomorrow, and with all of Calvin’s money gone, maybe not ever.

I stand under the saguaro cactus in my yard with my neighbor Calvin. The cactus towers over us, at least five times our height. Its large curving arm reaches for the cloudless Arizona sky.

A recent storm had nearly caused the cactus arm to fall down. My parents wedged a wooden board under the saguaro’s arm to hold it up.

“Oliver,” Calvin says. “I bet five dollars you can’t make that arm fall off.” He’s always betting me like this. Last week he bet five dollars I couldn’t catch a tarantula hawk, a nasty wasp. I ended up with the most painful sting of my life. But that was still better than having to deal with Calvin making fun of me if I’d chickened out.

“I don’t know,” I say, kicking at the cactus lightly. “My parents are trying to save it.” Though I can’t really understand what the big deal is about a stupid cactus arm.

Calvin grins. “I’ll bet you 10 dollars.”

“Nah,” I say. “My parents might get mad.”

Calvin is pale despite the blazing heat. “I can’t believe it,” he mutters.

“What’s going on out here?” We whirl around and see Dad coming toward us. “Oh no,” he says. “That arm broke off.” He looks down at us suspiciously. “How’d that happen, Oliver?”

I shrug, my shoulders shaking a little. “I don’t know.”

“It was like this when we got here,” Calvin adds. We glance at each other nervously.

Dad shakes his head. “Bummer,” he says. “You know it takes a hundred years for a saguaro cactus to even grow an arm? What a loss.”

I blink at him in the bright sun. No, I hadn’t known that.

Dad shrugs. “Oh well. Nothing to be done about it now. Will you boys help me wrap it up and carry it to the Dumpster?”

We help Dad roll the arm up in an old piece of carpet and carry it across the yard. As we toss it into the Dumpster, Dad says, “Just think—a hundred years down the toilet.”

“Actually, down the Dumpster,” says Calvin, chuckling.

Dad smiles, but I don’t feel like smiling at all anymore. After Dad goes back into the house, Calvin grumbles, “I’ll bring you your money tomorrow.” Then he turns and leaves.

I watch him walk next door, the guilt already building in my chest over what I did to that cactus. And over how I’d lied to Dad.

Calvin rolls his eyes. “You’re such a chicken.”

I lean on the board a little. “I don’t think so,” I say, but I’m sure Calvin senses he’s wearing me down.

“Fine,” he says. “Fifteen dollars. That’s all the money I have.”

Whoa. He’s never bet me that much before. Fifteen dollars would be enough to buy the video game I want. And maybe Calvin would finally leave me alone.

“Deal,” I say.

I glance back at my house to make sure no one’s watching and push the board as hard as I can. The beam clatters to the ground.

“Yes!” I shout. There won’t be any teasing tomorrow, and with all of Calvin’s money gone now, maybe not ever again.

I toss and turn in my bed that night, thinking about the cactus and Dad’s disappointed face.

A hundred years down the Dumpster.

A light flashes into my room, and several seconds later thunder booms. I start counting the seconds between the flashes and booms. There are fewer seconds every time. The storm is moving closer.

After another blinding burst of light, I count, “One Mississippi, two Mississippi—”

I stop. Did I hear something? It sounded like whispering.

The thundering boom comes, and I think I hear whispering again.

Poo’s old at Jack Hut’s farm.

Is that what it’s saying? That can’t be right. I don’t even know anyone named Jack Hut.

I strain to hear the words. It’s getting easier to make them out between the booms because the whispering is getting louder, just like the thunder. My heart nearly stops as I figure it out.

Who stole my cactus arm?

I pull the covers up to my trembling chin. Then I let out a big sigh of relief, the realization hitting me—it’s Calvin. He’s pranking me. It’s just like him to do something like this. What a sore loser.

I throw the covers back down and jump out of bed. Running to the window, I shout, “I know you’re out there, Calvin! I’m not letting you off the hook for the money!”

The whispering gets even louder.

Who stole my cactus arm?

Lightning flashes, revealing the yard outside my window. I run back to my bed, my heart leaping in my chest, the thunder rattling the window. I pull the covers up over my head.

Because I hadn’t seen Calvin outside. I hadn’t seen anyone at all.

Down the Dumpster

“What’s going on out here?” We spin around and see Dad coming toward us. “Oh no,” he says. “That arm broke off.” He looks at us suspiciously. “How’d that happen?”

I shrug, my shoulders shaking a little. “I don’t know.”

“It was like this when we got here,” Calvin adds. We glance at each other nervously.

Dad shakes his head. “Bummer,” he says. “You know it takes a hundred years for a saguaro cactus to even grow an arm?”

I blink at him in the bright sun. No, I hadn’t known that.

We help Dad roll the arm up in an old rug so we don’t get hurt by the thorns. Then we carry it across the yard. As we toss it into a Dumpster, Dad says, “Just think—a hundred years down the toilet.”

“Actually, down the Dumpster,” says Calvin, chuckling.

Dad smiles, but I don’t feel like smiling at all anymore. The guilt is already building in my chest over what I did to that cactus. And over how I’d lied to Dad.

Calvin hands me the 15 dollars as we walk to the bus stop the next morning. “Here,” he says begrudgingly, like it’s my fault he’s broke now, when he’s the one who forced me into the bet.

I take the money and wipe sweat from my forehead, the air already hot and humid from the storm. “Were you outside my window last night?” I ask.

“Why would I be outside your window? It was storming.”

I squint at him. “I heard you whispering.”

He smirks. “And what exactly was I whispering?”

“Who stole my cactus arm?”

He laughs. “That’s a good one. I think you’ve been reading too many scary stories.”

“I know it was you.”

“Dude, I was asleep in bed last night. I wouldn’t go out in a storm. I don’t want to get struck by lightning.”

But it had to be Calvin. Who else could it have been? A ghost? That’s silly. And it couldn’t have possibly been the actual . . . No, that’s ridiculous. It had to be a person. And that person was probably Calvin.

“Fine,” I grumble, though I still don’t totally believe him. Because I really don’t know what else it possibly could’ve been.

Thunder, Lightning, and Whispers

I toss and turn in my bed that night, thinking about the cactus and Dad’s disappointed face. A hundred years down the Dumpster.

Thunder booms outside and lightning flashes into my room. A storm is rolling in. I stop. Did I hear something? It sounded like whispering.

Poo’s old at Jack Hut’s farm.

That can’t be right. I don’t even know anyone named Jack Hut.

I strain to hear the words. The whispering is getting louder. My heart nearly stops as I figure out the words.

Who stole my cactus arm?

I pull the covers up to my trembling chin. Then I let out a big sigh of relief. I realize it’s Calvin, trying to prank me. I throw the covers back down and jump out of bed. Running to the window, I shout, “I know you’re out there, Calvin! I’m not letting you off the hook for the money!”

Who stole my cactus arm?

Lightning flashes, revealing the yard. I run back to my bed, my heart leaping in my chest. I pull the covers up over my head.

Because I hadn’t seen Calvin outside anywhere. I hadn’t seen anyone at all.

More storms roll in that night as I lie wide awake in bed. I pull the covers tightly around me. And then I hear the whispering again. Only it’s louder than last night. Much louder. And I realize it doesn’t sound like Calvin at all.

Who stole my cactus arm?

Burying my head under the pillow, I tremble. “Leave me alone!”

Who stole my cactus arm?

“Go away!”

Who stole my cactus arm?

The whispering is loud enough now that I’m sure it’s inside my room. “I’m sorry! It’s gone! The garbage truck already took it away!”

Who stole my cactus arm?

The fear overwhelms me and I start to cry, declaring, “I’ll make it right! I promise! I’ll make it right if you’ll just go away!”

And the whispering finally stops.

Another Stormy Night

Calvin hands me the 15 dollars as we walk to the bus stop the next morning. “Here,” he says reluctantly. I pocket the money. 

“Were you outside my window last night?” I ask. “I heard you whispering, ‘Who stole my cactus arm?’”

He laughs. “That’s a good one. I think you’ve been reading too many scary stories.”

“I know it was you.”

“Dude, I was asleep in bed last night. I wouldn’t go out in a storm.”

But it had to be Calvin. Who else could it have been? A ghost? That’s silly. And it couldn’t have possibly been the actual . . . No, that’s ridiculous. 

More storms roll in that night as I lie awake in bed. Then I hear the whispering again. Only it’s louder than last night. Much louder. And I realize it doesn’t sound like Calvin at all.

Who stole my cactus arm?

Burying my head under the pillow, I tremble. “Leave me alone!” 

Who stole my cactus arm?

“Go away!”

Who stole my cactus arm?

The fear overwhelms me, and I shout, “I’ll make it right! I promise!”

The whispering stops.

The next morning, I sit down at breakfast with my parents, my heart thumping. “I have something to tell you,” I say.

“What is it, honey?” Mom asks.

I swallow hard. “I knocked the cactus arm down. I’m sorry.”

Dad stares at me. “Why would you do that, Oliver?”

I explain the whole story about Calvin and the bet. “I’ll make it right,” I tell them. “I have to make it right.”

Mom puts her hand on mine and squeezes. “Thank you for telling us the truth.”

“And I think I know how you can make it right,” says Dad.

The next morning, I sit down at breakfast with my parents, my heart thumping. “I have something important to tell you,” I say.

They stop chewing their cereal and give me their full attention. “What is it, honey?” Mom asks.

I swallow hard. “I made the cactus arm fall down. I knocked it off. I’m sorry.”

Dad stares at me. “Why would you do that, Oliver?”

I explain the whole story about Calvin and the bet. Then I tell them, “I’ll make it right.” I take in a deep breath. “I have to make it right.”

Mom puts her hand on mine and squeezes. “Thank you for telling us the truth.”

“And I think I know how you can make it right,” says Dad.

It’s Up to Us

On Saturday, Mom and Dad take me to visit Saguaro National Park. The park ranger tells us, “This desert is the only place in the whole world where the saguaro cactus grows. Some of these cactuses are hundreds of years old. It’s up to us to protect them.”

My hand shoots up, and the park ranger points to me.

“What can we do to help?” I ask.

Putting his arm around me, Dad smiles.

“We have to take care of the desert,” the park ranger says. “Pick up trash and be careful not to start fires. And you can always donate.”

I pull the 15 dollars out of my pocket and tell the park ranger, “I’d like to donate.”

It’s Saturday, so Mom and Dad take me to visit Saguaro National Park. On the tour, the park ranger tells us, “The Sonoran Desert is the only place in the whole world where the saguaro cactus grows. It can take 10 years for a saguaro to grow its first inch, and some of these cactuses are hundreds of years old. It’s up to us to protect them.”

Dad raises his hand and asks, “What’s the penalty for damaging a saguaro?” He looks down at me and raises an eyebrow.

“A person can be sentenced to up to 25 years in prison for cutting down a saguaro, even on their own property,” the park ranger says.

I gulp. Twenty-five years? My own hand shoots up and the park ranger points to me.

“What can we do to help?” I ask.

Putting his arm around me, Dad smiles.

“Glad you asked,” the park ranger says. “We have to take care of the desert. Pick up trash when you see it. Be careful not to start fires. And of course you can always donate.”

I reach down, pull the 15 dollars out of my pocket, and tell the park ranger, “I’d like to donate.”

That night, I’m able to fall asleep easily. The sky is clear and quiet. There are no more storms. No more guilt over what I did.

And no more whispers.

That night, I’m able to fall asleep peacefully because the sky is clear and quiet. There are no more storms. No more guilt over what I did.

And no more whispers.


This story was originally published in the September 2019 issue.

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Activities (7)
Quizzes (1)
Answer Key (1)
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Activities (7) Download All Activities
Quizzes (1)
Answer Key (1)
Can't-Miss Teaching Extras
Listen to “The Golden Arm”

Play this Library of Congress recording of Jackie Torrence telling the folktale of “The Golden Arm.” Ask students to compare what happens in the ghost story to what happens in “The Mystery of the Cactus Arm.”

Read a Book

Encourage students to read one of Dusti Bowling’s books, such as Insignificant Events in the Life of a Cactus or her latest, The Canyon’s Edge.

Learn About the Saguaro Cactus

Have students visit the website of the Arizona-Sonora Desert Museum to find a just-for-kids fact sheet about the saguaro cactus.

More About the Story

Skills

vocabulary, character, how setting affects character, compare and contrast, inference, author’s craft, finding the meaning, plot, explanatory writing

Complexity Factors

Levels of Meaning

The story shows how a boy’s priorities shift along with his perspective. On another level, it reminds us of the value of the natural world and the importance of respecting it.

Structure

This realistic-fiction story is told in the first-person voice and in the present tense. The story is chronological. Some inferences are required.

Language

The story includes some challenging vocabulary, such as plummeting and begrudgingly, as well as rhetorical questions and a good deal of descriptive language.

Knowledge Demands 

Some experience with deserts and cactuses will be helpful but is not necessary.

Step-by-Step Lesson Plan

1. Preparing to Read

Background Information

  • This story is author Dusti Bowling’s interpretation of the classic ghost story “The Golden Arm.” The story has been told in many ways across cultures, but usually, a person with a golden arm dies, and a loved one takes the valuable arm before the burial—until the deceased’s ghost comes back to ask for it! The folktale teaches a lesson about respecting the dead. The lessons in Dusti’s version include respecting nature and taking responsibility for our actions.

Preview Text Features and Set a Purpose for Reading

  • Have students look at the cactus photo on page 10. Explain that it is a saguaro cactus (mentioned in the story’s first sentence), a very special kind of cactus that grows only in the Sonoran Desert, in Arizona, Mexico, and Southeast California. It can grow to be 60 feet tall and live 150 to 200 years!
  • Prompt students to read the Up Close box to set a purpose for reading.
  • Preview the questions in the margins of the story with students.
  • Distribute or assign our Vocabulary Skill Builder (available in your Resources tab) to preview five words. Students will also be able to add other unfamiliar words from the story.
  • Vocabulary words include wedged, hurling, plummeting, begrudgingly, penalty. 

Remote-learning tip: If you are teaching remotely, make a brief video of yourself giving students the above information and instructions.

2. Reading and Discussing

First Read: Get to Know the Text (20 minutes)

  • Have students read or listen to the audio of the story independently at home.

Second Read: Unpack the Text (30 minutes)

  • Put students in small groups in your classroom or in video breakout rooms. Ask them to discuss the close-reading questions in the margins. Circulate among groups to listen to discussions. This can be a good way to informally assess where students are. Answers follow. (In some cases, you’ll need to refer to the story to see the context of the question.) Then have them discuss the critical-thinking questions (available in your Resources tab).

Close-Reading Questions

  • What can you tell about the relationship between Oliver and Calvin? Is Calvin a good friend? (inference, p. 11) Oliver and Calvin are next-door neighbors, so they likely spend a lot of time together. Calvin seems to annoy Oliver by constantly pressuring him to do things against his better judgment. Calvin uses bets and teasing to pressure Oliver, which a truly good friend would not do.
  • Why is Oliver tempted to take Calvin’s bet? Why might he resist the bet? (character’s conflict, p. 11) Oliver is tempted to take the bet because he could win 15 dollars and buy Animal Crossing . Plus, he could get out of Calvin calling him a chicken at school. He might resist the bet because he knows that his parents are trying to save the cactus’s arm and they would be disappointed if he broke it off.
  • Why do you think Oliver does this? Do you think he has thought through his actions? (character’s motivation, p. 11) Oliver hurls rocks at the cactus arm because he has become determined to win his bet with Calvin. He is caught up in the moment and doesn’t seem to be thinking about how he or his parents will feel afterward or what he will tell them.
  • How does hearing this detail affect Oliver? (detail, p. 12) Knowing that it takes a saguaro cactus 100 years to grow an arm makes Oliver feel even more guilty. He realizes that he cannot easily repair what he has done.
  • What is the setting like right now? What mood, or feeling, does this setting create? (setting, p. 12) The setting is a dark, stormy night. This creates a spooky mood.
  • Where do you think the whispering voice is coming from? (inference, p. 12) Answers will vary but students might say that the voice is coming from Oliver’s conscience. He feels guilty for breaking off the cactus arm, then lying to his dad about it; his guilty feelings are haunting him.
  • Does Oliver seem happy to have the money? Explain your answer. (character, p. 13) Oliver does not seem happy to have the money. He doesn’t express anything positive about it. Instead, he wipes sweat from his forehead and thinks about the hot, humid weather.
  • What missing word would come after actual? Why is the word left out? (inference, p. 13) The word cactus would come after actual. It is left out because Oliver is trying to avoid, or push away, the thought that perhaps the injured cactus itself is coming to haunt him by asking for its arm back.
  • How does drama build up through this section? (author’s craft, p. 13) Drama builds up because Oliver repeatedly hears the question “Who stole my cactus arm?” With each repetition of the question, Oliver reacts with more fear and desperation. Finally, to relieve his fear and guilt, Oliver reaches a point of promising to make it better.
  • In your opinion, why does Oliver have to make it right? (character’s conflict, p. 14) Students will probably say that he has to make it right because he promised the whispering voice that he would. More important, he knows that he did something wrong and he has to do something to make up for the mistake he made by breaking the cactus arm.
  • Why do you think Dad asks this question? (character’s motivation, p. 14) Dad probably asks this question so that Oliver will hear how serious it is to damage a saguaro cactus. Also, Dad knows that Oliver wants to make up for what he did, so the question starts a conversation between the ranger and Oliver about how Oliver can help.
  • How has Oliver solved his problem? (plot, p. 14) Oliver kept his promise to the whispering voice that he would “make it right”; he donated the 15 dollars he won in the bet to help protect other saguaro cactuses. He can now sleep peacefully because he no longer feels guilty. He told his parents the truth about what he did and he made up for it.

Critical-Thinking Question

  • Based on what you know at the end of the story, what would you tell Oliver if he asked you for your advice when Calvin bet him 15 dollars to break off the cactus arm? Explain your answer. (theme) Answers will vary, but students will likely say that they would advise Oliver to say no to Calvin. Accepting Calvin’s bet led Oliver to do things that he knew he shouldn’t do. He damaged a very special kind of cactus, one that takes many years to grow. So his action cannot be quickly repaired. Oliver also ended up lying to his dad, which he knew was wrong. Students will probably say that taking Calvin’s bet was definitely not worth the 15 dollars he got or the chance to buy Animal Crossing.

3. Skill Building and Writing

Featured Skill: Plot

  • Distribute or digitally assign the Plot Skill Builder (available in your Resources tab). It will help students identify the points in the story where Oliver’s conflict begins, gets worse, rises to a climax, and is then resolved. Ask students to respond to the writing prompt on page 14, keeping in mind what they wrote in the Skill Builder.
  • Alternatively, share the Choice Board (available in your Resources tab) with students and let them complete one or more of the options on it.

Great Ideas for Remote Learning

  • Have students do a partner reading of the story by calling each other on the phone or on a video chat. They should take turns reading aloud for about five minutes, helping each other to monitor for comprehension by discussing what they read.
  • Gather a guided-reading group in your virtual classroom and read the story together. Pause to discuss the questions in the margins with the group. To make it more interactive, try having students call on each other to ask whether they agree with an answer or would like to add anything.

Differentiate and Customize
For Struggling Readers

Have students listen to the Author Read-Aloud with Dusti Bowling. Then ask them to write a short paragraph explaining what Oliver’s main problem was and how he solved it.

For Advanced Readers

This story contains a lot of dialogue. Have students work in a group to rewrite the story as a play that they could act out or perform as a play reading for the class.

For ELL Students

This story includes a number of colloquial words or phrases that English learners might not be familiar with. Explain these before or as you read: a chicken (p. 11); the Dumpster (p. 12); “One Mississippi, two Mississippi—” (p. 12); a sore loser (p. 12).

Text-to-Speech