There are old everyday tricks that are transmitted from generation to generation, sometimes they are forgotten, sometimes reborn with a new force. But always remain interesting and helpful ...
Someone decided to remember the past and gathered for you 8 tricks from childhood, which for some reason everyone forgot
Determine the time before sunset
Fold your fingers together and pull your hand so that the sun "lay" on the index finger. Now consider the amount of fingers to the horizon line. Each of the fingers will be equal to approximately 15 minutes before sunset.
Learn the number of days in the month
Squeeze your hand in the fist and start counting the months on the knuckles of your fingers. Each knuckle and vpadina is a separate month. If you think on one hand, then, reaching the end, start again from the knuckles of the index finger.
If a month fell to the knuckle, then it has 31 days, and if there is 30 or less on the depression.
And, for example, remember what months are 30 days, it is possible using the word "apiunsen" (first letters in the names of months)
Find out the moon or decreases
To explain to the child, the moon grows or decreases, ask him to "put a finger to the crescent in the sky. If the letter "P" turned out, the moon grows, if "s" - decreases.
Overcome the ancient Romans
To memorize Roman numbers and numbers, it is possible to use such a phrase: we darim juicy lames, enough Visa IX. The first letters in words mean Roman figures descending: M (1000), D (500), C (100), L (50), X (10), V (5), I (1).
Check the quality of the battery
Distinguish a good battery from bad very simple. Raise two batteries for 1-2 cm above the table and release. That battery, which bounce and falls, discharged.
Another way is to lick the "+" finger battery. If the battery is charged, you will feel an unpleasant sour taste, but in general licking the batteries in nonhygienic.
Multiplication on the fingers
Usually, children quickly remember the multiplication of small numbers, but with numbers 6, 7, 8 and 9 difficulties arise. To help in this child, teach it a simple trick.
Turn your hands with palms to yourself and numb each finger, starting with the little finger, from 6 to 10. Now, for example, multiply 7 to 8, combine finger number 7 on your left hand with finger No. 8 on the right. The number of fingers downstairs, counting along with the connected, refers to dozens (we succeeded 5). And the tops, located at the top, you need to multiply each other - they denote the units (in our case, we multiply 3 to 2). Answer: 7 × 8 = 56.
In this way, you can quickly multiply by 6, 7 and 8.
To multiply on 9, straighten your fingers, and put your hands down. Now, to multiply any number on 9, just bend a finger at the number of this number. Fingers "to" denote tens, "after" - units. For example, to multiply 7 by 9, bend the 7th finger. It remains 6 fingers "to" and 3 "after". We get the answer: 7 × 9 = 63.
Length
If you need to approximately measure the subject, but there is no ruler at hand, then for this you can do with your fingers of one hand. In accordance with the proportions of a person, the distance between the tips of the large and index fingers is approximately 18 cm, and the distance between the thumb and the little finger is about 20 cm.
Of course, such a way is not accurate enough, because each of us has a different size of your hand. But it can be useful if it takes to measure a large object, and we only have a small ruler: just measure the distance between your fingers in advance.
Find out how many degrees in the corner
Maximize your fingers and attach to the surface on which you want to measure the angle. The little finger should lie on the bottom plane: it denotes 0 °. The angle between the thumb and the little finger will be 90 °, the angles between the little finger and other fingers are, respectively, 30 °, 45 ° and 60 °.
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