Be on focus

Tweet

When I was in Elementary School, my neighboor showed me a lens. Through this lens I could see his nose bigger. I was exiting to look another by that lens. When I was in Junior High School I learned that a lens could be used to burn a paper through sun shine that . . .

→ Read More

Where to do 8×1 or 1×8?

Tweet

In many cases dealing with people Commutative Operation Rule is not applicable at all. Which one is the best 8 times 1 or 1 time 8?

A teacher said to the students, “Which is better 8 than the 1 times 1 x 8?” The students ask in the heart. If you ask a . . .

→ Read More