Amazing Calendar Math Magic
Take any whole number between 1 and , add the squares of the digits to get a new number. Make some conjectures about what happens in general.
Interactive Magic Tricks
But the really clever trick is explaining to them why these 'tricks' are maths and not magic. Like all good magicians, you should practise by trying them. Can you explain how they work? Try this with a different starting number. Did you get a different result?
Why does this happen? Write the answer on a piece of paper without letting anybody see it and seal it in an envelope. Have somebody hold the envelope and at the end ask them to open it and reveal the number you wrote at the beginning. Without giving you any information, ask a friend to count the value of some coins and write the amount on a piece of paper.
Then ask your friend to:. For the grand finale, you ask for the final answer. Take off the last digit and you will be able to work out how much the coins are worth! Look at the answer, the hundreds are the age and the remaining digits are the shoe size.
87 best Calendar Math images on Pinterest in | Primary school, Activities and Classroom
If for instance somebody shows you , there are 11 hundreds - the age, and the remaining digits 05 or 5 show the shoe size. Now, how on earth does that work?
Problem Solution You may also like Calendar Capers Choose any three by three square of dates on a calendar page Card Trick 2 Can you explain how this card trick works? Art in Numbers Practice your multiplication tables by creating grid paper designs from Sharynideas! Kids identify patterns in their multiplication tables. When they identify a repeating pattern, they create art! Check out the activity here!
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Also, visit NRich Math for a slightly different way to create designs from your times tables! Walk Through Paper Can you walk through a hole in an 8. Pass out a sheet of paper to all of your students and see if they can figure out how to cut a hole large enough for them to fit through. Then, show them this magical trick! Afterwards, stretch your paper out and try to find the area and perimeter of your paper!
How did it change? For younger students, this project can tie into a basic measuring unit. You can even fit through an index card! Click here for details!
Amazing Calendar Trick
All they need is a set of dominoes! Click here for the full list! Check out domino magic squares and rectangles here! Then, they just subtract corner to corner.
A Right Brain approach to Math using Patterns, Rhythms, and an Overview
The big surprise is their final square! Like magic, all of the corners are the exact same numeral!
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See if kids can predict what will be their mystifying number before solving all their squares! Think of a whole number 1 through 10 2. Divide by 2 5. Subtract the original number Is the numeral 2?!
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