Venerdi 5 Dicembre 2003 ore 14:37:53 E’ in preparazione il blog per la classe 2ALC… abbiate un po’ di pazienza mtb Commenti Facebook This post has already been read 28287 times! Print PDF eBook
Dato un rettangolo di base b e altezza h, se si incrementano le due dimensioni di una stessa quantità, quale è la differenza dei perimetri dei due rettangoli? E quella delle aree? Generalizzare da un semplice problema (PdF) Commenti Facebook This post has already been read 25642 times! Print PDF eBook
Partendo da un problema semplice si possono far riflettere gli alunni sul modello matematico, sui vincoli, sull’avere soluzioni o meno, sulla geometria applicata a situazioni reali e molto di più. Il testo del problema: Date due figure, un trapezio rettangolo ABCD e un triangolo PQR, con lati: AB=2x-1, BC=x+2, CD=9, DA=x PR=x, QR=x+6 e PQ= 2AB-9 […]
R.I.P. Romke Jan Bernhard Sloot ( 27-08-1945, 11-07-1999 )
was a Dutch electronics technician, who claimed to have developed a revolutionary data compression technique,
the Sloot Digital Coding System http://en.wikipedia.org/wiki/Jan_sloot
bellissimo!
48 + 1 = 7 x 7
1_ x 12 = 12______________1 + 2 = 3
2_ x 12 = 24______________2 + 4 = 6
3_ x 12 = 36______________3 + 6 = 9
4_ x 12 = 48___4 + 8 = 12 = 1+2 = 3
5_ x 12 = 60_______________6+0 = 6
6_ x 12 = 72_______________7+2 = 9
7_ x 12 = 84____8+4 = 12 = 1+2 = 3
8_ x 12 = 96____9+6 = 15 = 1+5 = 6
9_ x 12 = 108____________1+0+8 = 9
10 x 12 = 120____________1+2+0 = 3
11 x 12 = 132____________1+3+2 = 6
12 x 12 = 144____________1+4+4 = 9
13 x 12 = 156__1+5+6 = 12 = 1+2 = 3
14 x 12 = 168__1+6+8 = 15 = 1+5 = 6
15 x 12 = 180_____________1+8+0 = 9
16 x 12 = 192__1+9+2 = 12 = 1+2 = 3
17 x 12 = 204_____________2+0+4 = 6
18 x 12 = 216_____________2+1+6 = 9
19 x 12 = 228__2+2+8 = 12 = 1+2 = 3
20 x 12 = 240_____________2+4+0 = 6
21 x 12 = 252_____________2+5+2 = 9
22 x 12 = 264__2+6+4 = 12 = 1+2 = 3
23 x 12 = 276__2+7+6 = 15 = 1+5 = 6
24 x 12 = 288__2+8+8 = 18 = 1+8 = 9
25 x 12 = 300_____________3+0+0 = 3
~~~
36 x 12 = 432_____________4+3+2 = 9
37 x 12 = 444__4+4+4 = 12 = 1+2 = 3
~~~
48 x 12 = 576__5+7+6 = 18 = 1+8 = 9
48 = 4 x 12 = 7 x 7 – 1
Learning from Liu Hui
http://www.ams.org/notices/200207/comm-cullen.pdf
http://en.wikipedia.org/wiki/Zhou_Bi_Suan_Jing
http://en.wikipedia.org/wiki/The_Nine_Chapters_on_the_Mathematical_Art
http://en.wikipedia.org/wiki/Pythagorean_theorem#History
iSQUARE = – 1
http://en.wikipedia.org/wiki/History_of_complex_numbers#History
Time you learned love and lust, they both have 4 letters
666 : http://www.youtube.com/watch?v=m0hqgwo297g
R.I.P.
Romke Jan Bernhard Sloot ( 27-08-1945, 11-07-1999 )
was a Dutch electronics technician, who claimed to have developed a revolutionary data compression technique,
the Sloot Digital Coding System
http://en.wikipedia.org/wiki/Jan_sloot
http://science2art.tumblr.com/post/18723310752/phi-369
http://science2art.tumblr.com/post/18398397422/72