Chemical pollution has a serious impact on the health of the Earth.

This shirt is made of chemical fiber.

My child attends a supplementary school every Saturday.

Radioactive elements are produced in nature and scientific experiments.

He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.

I create a balance sheet every month to understand my financial situation.

I analyze data using a spreadsheet software.

Let's look at this truth table and understand the result of the logical expression.

He wrote his name using a logogram.

This sentence contains non-Jōyō kanji.