[For 4th Graders] Fun Independent Research Ideas You Can Do With Everyday Materials
Many fourth graders are probably struggling to choose a summer break independent research topic that’s “fun but not too difficult.” In fact, you can create a project that makes your friends say “Wow!” using simple experiments and crafts with everyday materials.
Here, independent research pros introduce exciting ideas you can dive into, like a shiny coin experiment with 10-yen pieces, making kohakutou (amber sugar candy), and crafting hydrangeas.
Plus, everything from preparation to record-keeping is explained carefully, so you can take on the challenge with confidence.
Find a special independent research project that will become a lasting summer vacation memory!
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[4th Grade] Fun Independent Research Ideas (21–30) Using Everyday Materials!
Sparkling hourglass

Let’s make a cute, sparkly hourglass that doubles as interior decor.
Prepare two small bottles, glitter to use as sand, a clear plastic file sheet, and decorative parts.
Cut the clear file slightly larger than the bottle opening and make a hole in the center for the glitter to pass through.
Attach tape and half-cover the hole, then glue it to the bottle.
Add the glitter and glue on the other bottle.
Finish it off cutely with decorative parts.
After adding the glitter, be careful not to turn it over until the adhesive has dried.
Transparent cute coaster

Summer is supposed to be hot, but don’t you feel like the summers lately are getting hotter every year? When it’s hot, we crave cold drinks—so why not make coasters to brighten up your drink time and turn it into a summer science project? You’ll be using two-part resin and other chemicals, so be sure to have an adult or an older sibling help you when handling them.
Aside from working with the chemicals, it’s basically just decorating coasters, so even small children can join in! We’re looking forward to seeing your cool, refreshing coasters!
Let’s try making a squeeze

A squeeze toy you can’t stop touching.
They’re sold at variety stores and 100-yen shops, and the food-themed ones look so cute that you can’t help wanting them.
How about making one yourself? Using a sponge and acrylic paint, you can make donuts or corn dogs that give a satisfying crunchy sound, or use water slime to create a candy apple with an addictively squishy feel.
Making squeeze toys also makes for a great summer science project.
Fly! Core Rocket
Here’s how to make an easy “core rocket.” You’ll need a plastic wrap core, a toilet paper core, two rubber bands, and a straw.
First, cut the straw so it’s just a little longer than the opening of the toilet paper core.
Link the two rubber bands by looping them together.
Tape the rubber bands to the straw, then tape the straw onto the plastic wrap core with cellophane tape.
Once it’s set up so the toilet paper core can be launched, you’re done! Decorate the toilet paper core however you like to make your own original rocket.
Have fun and get creative!
Fizzy Ramune Experiment
Why not try making fizzy ramune tablets for your summer break science project and enjoy their colors and sounds when dropped into water? After thoroughly mixing ingredients like powdered sugar, cornstarch, and food-grade citric acid, add food coloring to make them visually fun.
Press the mixed dough with two spoons to shape it just right.
Let them dry for about half a day to finish the ramune.
When eaten, they fizz in your mouth, letting you experience the curious chemical reaction of carbonation.
It’s a safe project even for children, using the carbon dioxide produced by the reaction between lemon juice’s acid and baking soda.
You can boost originality by changing the colors and flavors.
It’s a great idea for learning chemistry with familiar materials.
Let’s learn about sugar crystallization while making canelés.
Let’s make an experimental piece using a canelé mold for sweets.
Put powdered gelatin into a container filled with water and heat it in the microwave.
After heating, add sugar, color it with edible food coloring, and heat it in the microwave again.
Pour it into the canelé mold, and once it sets, remove it from the mold.
Your beautiful, colorful sugar canelés are ready.
At first, they look jiggly, but after a week, the sugar crystallizes and they turn into sparkly, crystal-like pieces.
You can enjoy watching the sugar change over time.
Experiment where ham melts with kiwi
Here’s a curious and fun science project using kiwifruit and ham.
Get your materials ready: kiwifruit, ham, paper, and felt-tip pens.
Place a sliced kiwifruit on top of a halved piece of ham.
By timing this setup, you can find out how many minutes it takes for the ham to start breaking down.
If you photograph the changes over time, your project will gain more depth.
You might discover something new by comparing heated kiwifruit with unheated kiwifruit.
Write down the purpose of the experiment and your results to complete your summer science project.



