Third graders will be hooked! A collection of science project ideas using everyday materials
For summer vacation independent research, especially for third graders, it’s common to think, “I want to pick an interesting topic, but I don’t want it to be too hard.” Actually, with familiar materials and a little creativity, you can do experiments and crafts packed with scientific discoveries.
Here, we introduce curiosity-sparking ideas like learning about chemical reactions by making bread, observing plant mechanisms with colorful flowers, and reviving a dried-out marker.
Try exciting research and craft projects that will make your friends say, “Awesome!”
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Third graders will be hooked! A collection of science project ideas using everyday materials (131–140)
Cool rubber band gun
Let me introduce a strong and cool rubber band gun.
Prepare 17 bendable straws, a clothespin, tape, and scissors, and let’s make it.
Take two straws and tape their bendable sections together to secure them.
Attach one clothespin to the gap of the joined straws to create the base.
When bundling straws, secure them tightly so the stacked pieces don’t shift.
Stack eight straws by grouping them in sets of four, extend the bendable sections, and build the structure.
When attaching parts together, make sure the straws are firmly fixed so they don’t slip.
Once it’s finished, hook on a rubber band and give it a try!
First Paints
This craft invites you to explore color expression by enjoying how paint layers and spreads.
Start by drawing lots of balloons on drawing paper.
Varying their sizes and shapes adds movement and a playful feel to the composition.
Drawing thicker outlines or giving each balloon its own pattern will add depth to the piece.
Carefully paint the balloons with your favorite colors.
The way colors bleed and blend becomes part of the artwork’s charm.
The finished picture looks like colorful balloons soaring into the sky, brightening the viewer’s mood.
It’s an idea that helps you learn painting basics in a fun way while fostering the freedom to express yourself.
Three-dimensional artwork made with aluminum foil
Here’s an idea for creating your own three-dimensional artwork using shiny aluminum foil.
Cut the foil to your preferred lengths, then crumple and compress it firmly into shape.
If you’re making a dragon, it helps to form separate parts—such as the body, tail, and horns—and refine each piece as you go.
Once all the parts are ready, check the balance and assemble them, securing everything firmly with glue or tape.
Finally, paint it in your favorite colors to complete a realistic, dynamic dragon.
The finished piece reflects light and has a strong presence, making it an eye-catching decorative item.
It’s a craft that lets you enjoy changing shapes freely and imagining a story as you create.
crayon (wax pastel)
Crayon pastels, which let you enjoy overlapping colors and inventive line work, are a delightful art form that expands the range of expression.
You can color the entire sheet with crayons and then draw lines on top with a pastel to create a finish reminiscent of carbon copy paper.
Using a stencil technique, place cut-out shapes on the paper and layer colors around them with crayon pastels to make patterns emerge.
In the scratch technique, you first color the surface vibrantly, then cover it with black and scratch lines with a pin or similar tool to draw, resulting in a dreamlike piece.
Choosing themes from nature—such as flowers, plants, or fish—enables even richer expression.
It’s an engaging craft where discoveries arise from shifts in color and accidental patterns, nurturing both imagination and powers of observation.
Cardboard 3D craft
Three-dimensional creations using single-faced corrugated cardboard make the most of the material’s qualities depending on the direction and shape of your cuts.
If you cut along the direction of the flutes, the cardboard bends easily; by changing the cutting direction, you can form pillar-like shapes.
Cut long strips and coil them or make rods to combine into towers, arches, or animal bodies—shape them freely.
Connecting multiple parts in three dimensions results in sturdy works.
Painting the surface or adding patterns enhances the finish.
Sculptures born from everyday materials convey the depth of making and the freedom of imagination.
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!