Magnetic Mysteries Uncovered

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Grade Level:

4th Grade (Year 4)
Curriculum Area: Science – Physical Science
Standards:

• PS5.1e
• PS5.2a
• PS5.2b

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Time Allotted

45 minutes

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Topic / Big Idea

Magnets are invisible forces in motion — they can attract and repel objects from a distance, through different materials, and without even touching them!

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Standards Addressed

NGSS Alignment for Grade 4 – Physical Science

• PS5.1e: Investigate that magnets can attract or repel certain materials.
• PS5.2a: Explore how magnets attract or repel each other and affect objects at a distance.
• PS5.2b: Observe how magnetic forces can work through different materials.

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Instructional Objectives

Cognitive (Knowledge)

• Students will identify materials that are magnetic.
• Students will explain how magnets exert forces across space and through materials.
• Students will understand how two magnets can repel or attract each other depending on their orientation.

Psychomotor (Skills)

• Students will predict and test materials for magnetic attraction.
• Students will measure magnetic force at different distances using a ruler.
• Students will record and interpret experimental results.

Affective (Attitudes)

• Students will demonstrate curiosity about forces they can’t see.
• Students will value collaboration with peers during experimentation.
• Students will respect others’ opinions during class discussions and presentations.

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Learning Goals / Essential Questions

“I Can” Statements:

• I can determine what materials magnets attract or repel.
• I can observe and describe magnetic force in action without touch.
• I can test how magnets work through different materials.

Essential Questions:

• What makes something magnetic?
• Can magnets push or pull even if they don’t touch something?
• What materials or barriers weaken or block magnetic forces?

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Vocabulary

Term	Kid-Friendly Definition
Magnet	An object that can pull certain things, like metal, to it.
Magnetic Force	A powerful push or pull made by a magnet.
Attract	To pull something closer.
Repel	To push something away.
Magnetic Field	The invisible area where a magnet does its work.
Material	The stuff something is made of (like paper, plastic, metal)

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Prior Knowledge Required

• Students should understand the difference between physical objects and forces.
• Familiar with predicting, observing, and recording simple experiment data.
• Able to work effectively in small groups by listening and contributing.

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Assessment Plan

Objective Type	What to Assess	How to Assess	Criteria for Mastery	When to Assess
Cognitive	Identification of magnetic vs. non-magnetic items	Exit Ticket, Verbal Questions	Correct identification with explanation	During share-out & exit
Psychomotor	Completion of station activities and worksheet	Interactive Worksheet (See attachment)	Accuracy of recordings and reflection	During station time
Affective	Engagement & respectful listening/collaboration	Group Observation, Presentation Notes	Participates equally and listens to others	Throughout, especially share out

Assessment Tools

• “Magnet Mystery Worksheet” (see below)
• Observation checklist
• Exit reflection card

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Materials & Environment

Whole Class Resources

• Mystery Bag (with: paperclip, rubber band, coin, plastic spoon, nail, foil, wood cube, pencil top eraser, small magnet)
• Visual Slideshow on Magnetic Properties & Safety
• Bar magnets, horseshoe magnets
• Rulers (inches/cm for distance measurement)
• Non-magnetic containers (plastic tupperware lids, cloth, paper sheets)
• “Magnet Mystery Worksheet” (1 per student)
• Safety goggles (optional)
• Index cards for end reflection
• A “Magic Microphone” for share-outs
• Clipboards and pencils

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Safety and Behavior Expectations

• Do not put materials near mouth, eyes, or face.
• No throwing or tossing materials.
• Hands must be dry before handling magnets and materials.
• Stay in assigned stations and rotate when signalled.
• Be respectful listeners when other groups are sharing.

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Instructional Procedure

🧲 Introduction & Engagement (15 mins)

Mystery Bag Game

1. Show the Mystery Bag. Describe this as a “Magnet Magic Challenge.”
2. Each student picks one item and silently guesses: “Will this stick to a magnet?”
3. Teacher then tests each in front of the class and charts the results.
4. Show how a strong magnet can pull a paperclip without touching it (hover the magnet gradually).
5. Demonstrate the magnetic pull through plastic or paper.
6. Display short slideshow with images/animations to explain attractive vs. repulsive forces and magnetic fields.

Guiding Questions:

• “Why do you think the magnet didn’t attract the rubber band?”
• “What happened when it got close — but didn’t touch?”
• “Have you ever used magnets in your life? Where and how?”

Transition students into activity stations.

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🔍 Developmental Activities: Magnet Discovery Stations (20 mins)

Students rotate through 3 Magnet Exploration Stations in small groups of 4–5. Each station should take approximately 6–7 minutes.

🔸 Station 1: Attract or Not?

Objective: Detect materials that are magnetic.

Materials: Magnets, assorted items (same as the mystery bag).

Task:

• Predict which materials will stick to the magnet.
• Test and record whether or not they are magnetic.
• Look for similarities in magnetic items.

Student Prompt:
“Which materials surprised you? Why do you think they did or didn’t stick?”

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🔸 Station 2: Magnet & Distance

Objective: Test how far magnetic force can reach.

Materials: Paperclips, bar magnets, rulers.

Task:

• Hold the magnet ~6 inches away and slowly move closer to the paperclip.
• Record at what distance the magnet starts pulling.
• Repeat three times for consistency.

Student Prompt:
“Does the magnet attract from farther away every time? Why or why not?”

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🔸 Station 3: Magnet Through Materials

Objective: Observe how magnets interact through materials.

Materials: Paper, plastic lid, cloth pieces, magnet, paperclip.

Task:

• Place paperclip under paper, plastic, or cloth.
• Try to attract it using the magnet on top. Can you still feel the pull?
• Test which materials work and which don’t.

Student Prompt:
“What do these materials have in common? Can thick things block the magnet?”

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🎤 Whole-Class Share-Out (10 mins)

• Students return to their seats and prepare mini-presentations from their worksheets (“Magnet Experts”).
• Teacher passes around a plastic microphone: students share one finding.
• Other students must write down:
  • 1 surprising thing they heard
  • 1 thing they now understand better

Key Questions to Ask Groups:

• “What was your favorite material to test?”
• “Did your predictions match your results?”
• “What was tricky or surprising?”

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📝 Exit Ticket (5 mins)

On an index card:

1. Write: “The most surprising thing I learned about magnets today is…”
2. Write: “Now I wonder…”

Collect these as students leave.

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Extension / Homework

Mission: Create a Magnet-Powered Tool!

Students choose ONE of the following:

1. Design your own Magnetic Invention

   • Draw a tool/device that uses magnets (like a magnetic belt or cleanup tool).
   • Label each part and what the magnet helps it do.

2. Create a Magnetic Superhero!

   • Design a superhero who uses magnetic powers.
   • Describe in a few sentences what powers they have, how they help people, and what their limitations are.

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Attached Worksheet: Magnet Mystery Journal

Name: _____________________ Date: _______________

Station	Object / Setup	Prediction (Magnetic?)	What Happened?	Why (Your Theory)?
1	Paperclip	☐ Yes ☐ No
1	Rubber Band	☐ Yes ☐ No
2	Distance Test 1	_____ inches/cm
2	Distance Test 2	_____ inches/cm
3	Paper Barrier	☐ Pulled ☐ Didn’t
3	Plastic Lid	☐ Pulled ☐ Didn’t

What’s something you want to test next time? __________________________________________________

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Conclusion

This hands-on exploration of magnetism transforms science into discovery. It emphasizes teamwork, inquiry, and wonder — sparking curiosity not just in what magnets do, but how invisible forces shape everyday experiences. With real-world connections and cross-curricular creativity, this lesson aims to leave a lasting impression long after the magnets are back in the drawer.