Third graders will be hooked! A collection of science project ideas using everyday materials

Even grade-schoolers can make it! Triple-shot chopstick rubber band gun

[Even Elementary Schoolers Can Do It] Triple Shot! How to Make a Chopstick Rubber-Band Gun! This Time’s Enemy (Target) Was That “Guy” Again...!? [I Tried It] [I Made It]

You might think it’s just a simple chopstick rubber band gun, but it actually has a feature that lets you fire three rubber bands.

The building process is straightforward: attach a handle to a bundle of chopsticks that serves as the base, then install a movable trigger so that it’s sandwiched in place.

What’s crucial here are the trigger shape and the positions where the rubber bands are hooked.

By attaching three rubber bands at different positions, they will fire in sequence.

The hooking method for each band is also intricate, so doing that accurately is a key point.

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kappamaki

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smart ball

[Summer Vacation Craft] A “Smart Ball” you can make with 100-yen shop items—perfect for your child’s summer homework or independent research project!

Smart Ball is a playful craft that lets you build your very own game while getting excited about the motion of a rolling marble.

Cut lumber to fit a perforated board to create a frame.

Add an incline beneath the board so the marble rolls more easily.

For the launcher, use nails and rubber bands to make a pull-and-release mechanism that shoots the marble.

Attach a plastic sheet on top of the board to enhance the sound and feel as the marble rolls.

Place small pegs called dowels to add unpredictability to the marble’s path.

With creative targets and decorations, you’ll have a one-of-a-kind original Smart Ball game.

It’s a fun way to nurture creativity and observation skills as you play.

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mutō

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paper cup trumpet

[Instrument Craft] Paper Cup Trumpet (A Trumpet Like a String Telephone) [Easy Craft] Handmade Toy with Chopsticks

This is a craft using a paper cup that can produce a trumpet-like sound when you pull the string sharply.

First, make a hole in the bottom of the paper cup, thread a string through it, and secure it with a short, folded toothpick so the string doesn’t slip out.

Then, when you pull the string vigorously, the impact on the string is transmitted to the paper cup, creating a trumpet-like sound.

You can pull the string with your hand, but using chopsticks is also recommended—try it out and see how the sound changes.

Since just building the mechanism can look simple, it’s also important to add your own decorations to the paper cup.

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kappamaki

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The principle of a Cartesian diver

Principle of the Cartesian diver: Independent research: 3rd grade: Science experiment [Azabu Science Experiment Classroom]

It’s sure to draw attention! This is an experiment based on the principle of the Cartesian diver.

In it, a dropper placed inside a plastic bottle alternately floats and sinks.

When you show this illusion-like phenomenon, people will be amazed.

The reason it happens is a bit complex, involving the relationship between air volume and pressure.

There are videos that explain it clearly, so check them out! By the way, you can also tweak the experiment by using multiple droppers.

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yamamoto

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Fun-to-shake shaker

Here’s a fun shaker made from a plastic wrap core.

Use origami made of film.

Wrap double-sided tape around the core and seal one end with the origami.

From the other side, add beads or similar fillings and seal it the same way with origami.

Wrap washi tape around it, then cut the origami into strips and wrap them on.

Add googly-eye stickers and a mouth to finish! It’s fun to dance with to music, too.

Little kids will enjoy it, so be sure to make it together and have a great time!

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kepiko

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Maze ideas

You can make a fun maze with a cardboard wrap core! Here’s a simple way to do it.

First, cut construction paper to the length of the wrap core, and draw a maze on it using any writing tools you like.

Attach double-sided tape to the paper with the maze and wrap it around the core.

Next, cut a piece of wrapping film to about 5 cm and stick your favorite stickers on it—that’s it! Thread it through the wrap core to play the maze game.

If you make the construction paper removable, you can enjoy original mazes over and over again.

It’s also recommended to use stickers of your favorite characters to enjoy a themed world.

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kepiko

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Maze ideas

You can make a fun maze with a cardboard wrap core! Here’s a simple way to do it.

First, cut construction paper to the length of the wrap core, and draw a maze on it using any writing tools you like.

Attach double-sided tape to the paper with the maze and wrap it around the core.

Next, cut a piece of wrapping film to about 5 cm and stick your favorite stickers on it—that’s it! Thread it through the wrap core to play the maze game.

If you make the construction paper removable, you can enjoy original mazes over and over again.

It’s also recommended to use stickers of your favorite characters to enjoy a themed world.

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kepiko

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