Arrange the numbers in the green cells to make a magic square.
The totals of each row, column and diagonal should be the same.
Congratulations that is correct!
Are there any other ways to make a magic square using these numbers?
Your answer is not correct.
The totals of each row, column and diagonal should be the same. Try again.
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There are eight solutions. Are they all completely different?
A magic square features in Dan Brown's The Lost Symbol. It is the Order Eight Franklin Square which was first published in 1769 by American scientist Benjamin Franklin.
Casio Classwiz Calculator
There is currently a lot of talk about this new calculator being the best in its price range for use in the Maths classroom. The new ClassWiz features a high-resolution display making it easier to view numerical formulas and symbols but it isn't a graphical calculator as such (it has the capacity to draw graphs on your smart phone or tablet, via a scannable QR code and an app).
As well as basic spreadsheet mode and an equation solving feature you also get the ability to solve quadratic, cubic or quartic polynomial inequalities and the answer is given just as it should be written down, using the correct inequality symbols!
This calculator has a high-performance processor and twice the memory of previous models ensuring speedy operation and superior computational power.more...
Teacher, do your students have
access to computers?
Here a concise URL for a version of this page without the comments.
Here is the URL which will take them to a related student activity.
Here are the oldest magic squares we know of:
The Lo Shu square on the back of a small turtle in the centre, surrounded by the signs of the Chinese Zodiac and the Eight trigrams, all carried by a large turtle
This famous 4 by 4 magic square above can be seen in the picture below. Melencolia I is an engraving by the German Renaissance master Albrecht Dürer.