Recommended for elementary school students! Science fair topics & craft ideas
Speaking of summer vacation, choosing a topic for the independent research project can often be tough.
Science experiments and crafts are both fun! If your child is good at crafts, we recommend crafts because they can enjoy the process as they go.
When they get absorbed in it, they might even finish in just a few days.
Here, we’ll introduce a variety of ideas for independent research and crafts! If you’re struggling to pick a theme, please use these as a reference.
To create fun summer memories, make a one-of-a-kind project of your own!
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- Toys you can make from cardboard crafts! Authentic ideas you can build and play with
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For upper grades (201–210)
Cardboard garbage collection truck
Let me introduce cardboard garbage collection trucks.
There are different types of garbage trucks, and their movements and installed parts vary.
All of the trucks being introduced are made using cardboard.
By paying attention to details—such as changing the shape of the emergency stop switch section, recreating the tail lamps with plastic sheets, and writing the manufacturer’s name—you can complete a garbage truck that looks just like the real thing.
Understanding the movements and features of each type of garbage truck also makes it easier to imagine the materials you’ll need to prepare.
Be sure to try making a garbage truck in your own style.
Cardboard vending machine
Let’s introduce a cardboard vending machine that looks just like the real thing.
Insert a coin and press a button, and a drink will come out from inside.
Gather the materials—milk cartons, cardboard, bubble gum, rubber bands, paper clips, plastic sheets, tape, glue, a ruler, scissors, and a utility knife—and let’s get building.
We’ll start by making the internal parts of the cardboard vending machine.
The key is to carefully measure each part and cut it to the correct size before assembling.
Measure the base cardboard as well to ensure it’s the right size to hold the drinks, then build accordingly.
It also sounds fun to make your own original drinks!
Marble Maze
Let me introduce a marble maze that’s so much fun to roll around.
Get your materials ready: a plastic board, colored construction paper, colored pencils, a ruler, a cutting mat, scissors, double-sided tape, clear tape, a ballpoint pen, and marbles.
Cut the plastic board to create the base shape of the maze.
It’s best to assemble the base by attaching pieces around the edges.
For the maze course, cut the board and adjust the sizes as you build.
Create traps by cutting construction paper and attaching them along the course.
Adding tunnels will make it even more exciting.
Roll your marble and enjoy aiming for the goal!
A Castle of Light Made with Corrugated Plastic and LEDs
This craft uses plastic corrugated board (known as “Pladan” in Japanese) to create a fantastical castle of light, featuring enchanting lighting effects.
Use a utility knife to cut window shapes you like into the board—stars, hearts, moons—feel free to get creative.
Once you’ve cut them out, roll the sheet into a cylinder and secure it with tape, then place an LED light inside to finish.
When you switch on the light, it shines through the windows, casting mysterious shadows around the room and creating the atmosphere of a real castle.
One of its charms is how it looks different in daylight and at night.
If you design your own and build a piece with a story, it will open up a world of imagination.
pull-back car
This craft lets you experience the fun of a car you built yourself zooming forward powered by rubber bands.
Cut corrugated plastic (plastic cardboard) to match the size of the car body.
For the wheels, use bottle caps: make a hole in the center, then pass a bamboo skewer through to create the axle.
If you firmly attach this to the body with hot glue, it will start to look like a real car.
Hook a rubber band onto the rear axle and wind it by turning the axle forward, and you’re ready to go.
When you let go, the car surges ahead under the power of the rubber band.
You can freely design and color the body, so you can get particular about the appearance too.
Using everyday materials and a simple mechanism, it’s a hands-on project that’s both fun to build and a great way to learn, delivering dynamic motion.
Paper Art Triangle
This is a craft project where you can enjoy the fun of freely drawing with paper by playing with the width and shape of the strips.
Use a wide paper band to create a large triangular outer frame.
Make firm creases and then glue it down to complete the base.
Next, use narrow paper bands to create patterns on the inside.
By combining and attaching shapes you like—zigzags, waves, circles, and more—you’ll achieve a three-dimensional finish.
With creative color choices and placement, even the same triangle takes on a completely different look.
The result is a piece that showcases both mathematical elements and design appeal, and it stands out well in displays.
It’s an idea that trains creativity and concentration.
Matchstick crafting play
Crafting with matchsticks—creating any shape you like—is a fun hands-on activity that nurtures creativity and fine motor skills.
From arrows and railroad tracks to burst-like patterns reminiscent of fireworks, you can freely assemble designs from flat compositions to three-dimensional forms.
You can arrange matchsticks to draw patterns like a picture, or angle them to build a 3D tower—the key is that each piece emerges from your own unique ideas.
The materials are light and easy to handle, allowing delicate expression even with small combinations of parts.
Displaying the finished pieces side by side reveals a miniature world and sparks the imagination.
With new discoveries each time you make something and the creator’s individuality shining through, matchstick crafts are an idea you can enjoy again and again.