10 old-school tricks that still work today

Newer is not always better; sometimes it’s just newer. There are little tips and tricks that have been around for years, sometimes even taught in school, to help people remember facts.
For those who struggle with “Which month has how many days?” or “Is it ie or ei?” the 10 old-school tips below may be of great help to you. Check them out and see if any of these ring a bell.
1. Good battery or bad battery?
Do you ever find a loose battery in the house and wonder if it’s actually any good? Drop a battery onto a flat, hard surface from one to two cm in the air. If it bounces and falls, it’s a dud. If lands upright, it’s a winner!
2. Finding south.
In case you ever get lost and don’t have a compass or smart phone with GPS that works, don’t despair. As long as you have an analog watch and can see the sun, you can figure out the directions. Place the watch flat on your palm with the hour hand pointing to the sun. Find a toothpick or piece of grass and place it across the face of the watch between the hour hand and 12. The end of the toothpick or grass that is closest to the 12 should be pointing due south.
3. Remembering Roman numeral values.
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