Recommended for 3rd graders! A collection of easy self-study ideas you can try

Let’s make a super ball

Simple Craft: Let's Make a Super Ball! #MakeASuperBall #ElementarySchoolExperiment #shorts

Did you know you can make a super ball yourself? You’ll need PVA laundry glue, salt, and food coloring or paint.

First, dissolve 40 g of salt in water and add color, then pour the saltwater into the glue and stir with a chopstick.

You’ll see a gooey mass start to form around the chopstick.

Gather it up and blot the moisture with a paper towel, and you’ll have an easy homemade super ball.

Depending on the batch, some bounce very well and others less so, but try adding your favorite colors and make all kinds of super balls!

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Hirakawa Masako (Bōkarisuto: Sakata Mizumako)

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Let’s look into old textbooks.

Old textbook, published in 1952 (Showa 27).

The textbook we use in our regular classes has undergone multiple revisions to reach its current form.

Let’s research the pre-revision version of the textbook, or even older editions, and explore the differences.

A smooth way to start is by checking whether older textbooks are available at libraries or local history archives.

Ice Experiment

Freeze the yogurt with liquid nitrogen.

Let’s try freezing various liquids found at home—for example, water, soy sauce, detergent, and shampoo.

Put liquids that seem likely to freeze into containers of the same shape and freeze them.

Since different liquids take different amounts of time to turn to ice, observe and record them every 5 minutes.

Once a liquid solidifies and becomes ice, weigh it and investigate which ice melts the fastest.

Survey of familiar invasive species

When I surveyed waterways with Kaneko, they were full of invasive species. [155th video]

There are cases where wild animals and plants we’ve been familiar with since childhood actually came from overseas long ago and took root here.

How about researching such nearby non-native species? It would also be good to look into what kind of impact they have had.

Let’s investigate delicious/tasty water

Independent Research Helper Kit: Let's Investigate Delicious/Good-Tasting Water – Gakken

In Japan, delicious natural spring water can be found all over the country.

There are kits available from various sources that let you test the taste and pH of such water.

How about a science project where you use these kits to check and compare the taste and pH of Japan’s natural spring water and bottled water? It might also be interesting to investigate the relationship between similar-tasting waters and the terrain where they spring up.

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Saitō Ayumu

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Shiitake cultivation

A large number of shiitake mushrooms appeared in my room.

If you’re looking for a science project theme where you can enjoy delicious food, growing shiitake mushrooms is a great choice.

In this experiment, you’ll use a shiitake mushroom growing kit to actually cultivate the mushrooms.

Depending on the temperature, it takes about a week for the mushrooms to grow, so be sure to prepare with enough time.

It’s easy for anyone to do, so it’s recommended even for lower elementary school students.

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Saitō Ayumu

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Let’s put it on the magnet.

3rd Grade Science: "Let's Use Magnets – 1. Objects That Stick to Magnets"

I think many of you have learned about magnets or played with them.

What I’d like to introduce is an experiment to test what sticks to a magnet.

You already know that iron sticks to magnets.

But you might not be sure about things like copper or wood.

In this experiment, you bring various items you’re curious about close to a magnet and test whether they stick.

As you collect data, you might discover unexpected commonalities or make new findings.

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yamamoto

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