Joining Materials: Tape, Glue, and Fasteners — Grade 1 Science

Remember when we learned how to describe materials by texture, hardness, flexibility, absorbency, transparency, and whether they stick to magnets? Great — now we get to put things together! Joining is like teamwork for materials.

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Hook: Why joining matters (and why scissors alone are lonely)

You already learned how to cut and shape things. But once you have two pieces, what makes them stay together? That’s what joining is: using something — like tape, glue, or a fastener — to make two or more materials act as one. It’s how we fix a torn page, build a paper house, or attach a button to a shirt.

Think of joining as giving materials a handshake, a hug, or — sometimes — a superhero cape.

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What joining is (simple and clear)

Joining means connecting two things so they stay together. Grade 1 scientists use three big groups of joiners:

• Tape — sticky strips that press on.
• Glue — wet paste that dries and sticks.
• Fasteners — things like staples, buttons, clips, string, or snaps that hold parts together.

Each method works better with certain materials and situations. We choose the right joiner the way we choose the right shoe for running vs. swimming.

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Quick reminders from earlier lessons (why properties matter here)

When picking a way to join, use what you learned about properties:

• Texture: Rough or smooth surfaces affect how well tape or glue can grip.
• Absorbency: Glue soaks into paper or cloth but sits on plastic, so it might not stick as well.
• Flexibility: Tape that can bend works better on bendy materials; a stiff staple might pop off.
• Hardness: Hard materials (like cardboard) hold staples and nails better than soft foam.
• Transparency: A clear tape or glue might be chosen when you want something invisible.
• Magnetism: Some fasteners, like magnetic clips, only work with metal.

Use those properties like a detective uses clues.

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Tape: quick, clean, and pressy

What tape does

Tape gives a fast join by pressing sticky sides to both materials. It works best on smooth, dry surfaces.

Good for

• Paper, cardboard, thin plastic (if surface is clean)
• Quick fixes, decorations, temporary joins

Not so good for

• Very rough or very dusty surfaces
• Things that get wet (some tapes peel off)

Classroom activity: Tape test

1. Give strips of tape and small squares of paper, cloth, and plastic.
2. Press tape on each and pull gently.
3. Observe: which material stays stuck? Why?

Science note: Sticky tape relies on surface contact. If the surface is bumpy or oily, the tape can’t grab on.

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Glue: the slow and patient joiner

What glue does

Glue is liquid at first. It soaks into some materials and then dries to become solid, joining pieces together.

Good for

• Paper, cardboard, cloth, wood (depending on glue type)
• Permanent joins and crafts

Not so good for

• Smooth non-porous plastics (some glue won’t soak in)
• Things that need holding while glue dries (glue needs time)

Classroom activity: Glue and absorbency

1. Put a dot of glue on paper, cloth, and a plastic toy.
2. Watch how the glue behaves: does it soak in or stay on top?
3. Try pressing another piece on top. Wait and test how strong it is after it dries.

Science note: Absorbency affects glue. Paper and cloth let glue soak in and form stronger bonds; plastic is less absorbent, so some glues won’t stick well.

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Fasteners: buttons, clips, staples, and more

What fasteners do

Fasteners join by hooking, holding, or clamping parts together. They don’t rely on stickiness or drying — often they use pressure, loops, or metal pins.

Types for Grade 1

• Staples: quick for paper and thin cardboard
• Cloth fasteners: buttons, snaps, Velcro for fabrics
• Clips: clothespins, paper clips for temporary holds
• String or ribbon: tie things together
• Magnets: join metal objects or stick to a metal board (remember magnetism!)

Good for

• Materials where you don’t want glue or tape (fabric, things that move)
• Quick changes and reusable joins

Safety note

Staples and pins are sharp. Teachers or grown-ups should help with those.

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Compare and choose: a quick guide

• Need it fast and temporary? Tape or clips.
• Want it permanent for paper/cloth? Glue (give it time to dry).
• Joining fabric where you want to open and close? Buttons or Velcro.
• Joining metal or using magnetic play? Magnets (use properties from the magnet lesson).

Micro explanation: Why materials sometimes win or lose

If a material is very smooth and not absorbent (like some plastics), the glue might just sit on top and fall off. If it is bendy and soft, a brittle fastener might break it. Always look at the material’s properties before choosing the joiner.

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Simple experiments to try (with supervision)

1. The Best Bond

   • Materials: paper, foam, a plastic spoon, tape, glue, paper clip
   • Make small joins for each material and test which join holds best when you pull gently.

2. Invisible Join

   • Materials: clear tape, transparent glue, colored paper
   • Try to make a join that you can hardly see. Which join looks cleanest?

3. Magic Magnet Join

   • Materials: small metal object, magnet, glue, tape
   • Try joining the magnet to different materials. Which join lets the magnet still attract metal?

These tests build observation skills and let kids use vocabulary from earlier lessons.

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Teaching tips (for the person leading the lesson)

• Encourage predictions: ask students which joiner will work best before testing.
• Use the vocabulary from prior lessons: texture, absorbency, flexibility, magnetism.
• Keep materials safe: supervise staples, scissors, strong glues.
• Make it playful: build a paper puppet house and join it with different methods.

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Key takeaways — the quick, sticky summary

• Joining connects materials using tape, glue, or fasteners.
• Choose the joiner by thinking about the material’s properties (what you learned earlier).
• Tape is fast, glue is patient and strong for porous materials, and fasteners are handy for reusable joins.

"This is the moment where the concept finally clicks: pick the right way to join based on what the materials are like."

Give students small challenges and let them discover what works. They’ll learn to be little scientists and crafty problem-solvers at the same time.

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Final playful challenge

Build a mini puppet using paper for the body, cloth for clothes, and string for arms. Try using tape, glue, and a button. Which join holds best when the puppet waves? Explain why using two words from our materials vocabulary.