Some interesting exchanges from the STF mailing forum.
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Square root of a number
The squre root of whole number is always less than the that square number ( ex; sqare root of 25 is 5, 36 is 6 etc) but in decimal it is reverse (ex; sqare root 0.8 is o.89) what is the reason? Shared by Suchetha SS, GHS Thyamagondulu.
CarMetal is a Geogebra like free software
A description of another graphic tool like Geogebra. Shared by Tharanath Achar, GPUC Belthangady.
Math teaser about an arithmetic progression
P th term of an AP is Q and Q th term of an AP is P . Then find PQ th term ?....Shared by Mallikarjun Sudi, GHS Yelheri and Sneha Titus, APU.
Which day is Pi Day?
Trigonometry using Geogebra
Basics of Trigonometry using Geogebra, lesson shared by Radha Narve, GHS Begur.
Click [here] to read more.
Phone number birthday puzzle
||YOUR PHONE NUMBER WILL REVEAL YOUR AGE
Your Phone number will reveal your actual Age. It will take about 15 seconds,read and do it at the same time so that you will not lose the fun.
- Take a look at your last digit of your cell phone number
- Use this figure and multiply by 2
- Then add 5
- And then multiply by 50
- And then add the number 1765
- The last step; with this number, subtract your birth year.
Now you see a three-digit number. The first digit is the last digit of your phone number, the next two digits are your actual age! You can use the attached spreadsheet to solve this and find out why it works!!
The origin of the calendar