Recommended for elementary school students! Science fair topics & craft ideas

Does a picture change underwater? Let’s learn how light works.

Does the picture change underwater? A fascinating experiment using the properties of light [Fun Experiment]

This is an experiment that uses the phenomenon of total internal reflection.

Strangely, when you put it in water, the picture or the object inside looks different.

Prepare a plastic bottle with a smooth surface and place a marble inside.

When you submerge it in a bowl filled with water, the marble inside mysteriously disappears.

This happens because total internal reflection occurs and light reflects off the surface of the container.

Applying this idea, if you draw different pictures on the inside and outside of a bag, only the picture on the outside will be visible while the one inside disappears.

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Hirakawa Masako (Bōkarisuto: Sakata Mizumako)

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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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Making instruments with a plastic wrap core

No drill or cutter needed: Make instruments with a plastic wrap core [Crafts]

Let’s make a Chilean instrument that sounds like rain using a plastic wrap core! First, mark a bunch of toothpicks at the length of the wrap core so they match its length.

Next, cut the wrap core in a spiral.

Glue the cut toothpicks along the spiral using wood glue or similar adhesive.

Once you return the spiraled core to its original shape, seal the openings with duct tape.

Put in grains like mixed grains, different sizes of rice, beads, or beans.

After you cap it, your Chilean instrument, the rainstick, is complete!

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kepiko

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A climbing ladybug!

Easy magnet craft! A climbing ladybug! Recycle plastic wrap and toilet paper cores! #crafts #handmadeToys #summerVacationCrafts #recycledCrafts

Here’s how to make a ladybug toy you can play with using magnets.

First, decorate a half-sphere of Styrofoam to look like a ladybug using pens or any materials you like.

Attach a magnet to the back of the ladybug with double-sided tape.

Next, flatten a toilet paper tube and cut it in half.

Use double-sided tape to fix the cut piece around a wooden stick to form a ring, then attach a magnet so it attracts the ladybug’s magnet.

Make a “tree” using a plastic wrap (cling film) tube, and insert the stick inside the tube.

When you move the stick up and down, the ladybug will move too! It’s also fun to make other bugs or your favorite characters instead of a ladybug, so give it a try!

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kepiko

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Balloon pistol

Hit-the-target game powered by balloons! Super easy recycled craft: the “Balloon Pistol” #crafts #handmadetoys

You can play a fun target game using the power of a balloon! Use decorative pom-poms as the balls.

First, cut a balloon around the middle and attach it to a paper towel roll core.

Secure it with a rubber band so it won’t come off, and it’s ready! Put the decorative balls inside, pull back the balloon, and launch the balls to play.

Make the targets out of milk cartons.

It’s also recommended to decorate the launcher and shape it like a cool pistol using cardboard or any decorations you like.

Have fun with your own original ideas!

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kepiko

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How to make a pencil case

How to repurpose a plastic wrap core: Pen case edition

You can stand your favorite pens upright! Here’s how to make a cute pen case using a plastic wrap core.

First, cut the wrap core to a length that fits your pens.

It’s tough, so kids should have an adult help.

Next, place the core on thick paper, trace around it with a pencil, cut it out, and glue on a lid and a base for the case.

Once the glue dries, decorate it with your favorite wrapping paper or stickers.

Finally, roll up some thick paper, push it into the case, and trim any excess—and you’re done!

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kepiko

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Modes of heat transfer

Experimental Recipe: Let's investigate how fast heat transfers!

If you have cups made of various materials at home, this kind of independent study is also recommended.

Pour hot water into different cups and make a prediction, then experiment to see which one gets hot the fastest! Since you’ll be handling hot items, be sure to exercise caution during the experiment.