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Posts

October 23, 2014

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8:25 PM | algebraic structure of integers together with addition and multiplication proof
newest proof
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7:40 PM | the distributivity law for natural numbers%2Fproof by induction
newest proof
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2:01 PM | SACNAS at LACC 2014
My name is Joseph Chavoya. I am a Mexican-American Senior pursuing a degree in Pure Mathematics. As a first-generation under-represented student in Mathematics, I understand the difficulties associated with not only pursuing a degree in the Natural Sciences and Mathematics … Continue reading →

October 22, 2014

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10:13 PM | Tina Cardone Recaps the 2014 Northwestern Math Conference
Tina Cardone typically blogs at Drawing on Math. She attended the Northwestern Math Conference earlier this month and has recapped her first day and second two days there, including sessions on algebra, algebraic thinking, modeling, problem solving, and engagement.
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10:03 AM | Conferencia: Problemas Matemáticos sin resolver... [Tito Eliatron Dixit]
Mi segunda aportaación a la Edición 5.7 Alan Turing es Problemas matemáticos sin resolver que cualquier niño puede entender [Conferencia]
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8:39 AM | Surface Area of Triangular Prisms
I made these worksheets as a more hands-on visual way of finding the surface area of triangular prisms. The first worksheet (01) would be best printed on card. Students to cut out the nets, determine the surface area by counting squares and then form the solid. The second worksheet (02) asks students to determine the surface area by counting squares on a net, then they match (using colour) the faces of the net with the faces of an isometric solid. The third worksheet (03) has a variety of […]

October 21, 2014

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6:41 PM | El contable hindú de David Leavitt
Parece, por el tiempo meteorológico,  que el verano todavía continua y eso me trae a la memoría uno de los libros que leí: El contable hindú de David Leavitt Cuando uno lee el título se espera una biografía o una novela basada en hechos reales, sobre la vida del matemático hindú Srinivasa Ramanujan  y al principio así parece que va a ser. G. H. Hardy comienza la historia y parece razonable que él […]
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10:58 AM | De intuiciones, etiquetas, Shkespeare y Alfredo [Tito Eliatron Dixit]
Mi aportación a la Edición 5.7: Alan Turing es mni recopilación de vídeos de charlas matemáticas del pasado evento Naukas Bilbao 2014 y que he titulado De intuiciones, etiquetas, Shkespeare y Alfredo
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8:56 AM | "Logaritmos y hechicería" participa en el Carnaval
Una entrada para la edición 5.7 Alan Turing del Carnaval: http://elteoremadecuales.com/logaritmos-y-hechiceria/ Salud para todos.    Ó.
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8:29 AM | Dos acertijos de Gardner para trolear y una sorprendente utilidad
Para vacilar a tu amigo le preguntas: ¿Cuántos cigarrillos iguales puedes colocar (sin doblarlos ni romperlos) de modo que cada uno toque a todos los demás? Luego le cuentas que el problema, aún sin resolver, viene de un acertijo de Martin Gardner y le propones un problema similar, con cilindros infinitos en lugar de cigarrillos. Por último, le sorprendes al contarle que este inocente acertijo resulta […]

October 18, 2014

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6:33 PM | construction of a square ii geometric proof
newest proof
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6:12 PM | construction of a square ii
newest proposition
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6:05 PM | law of cosines for acute angles
newest proposition
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5:59 PM | law of cosines for obtuse angles
newest proposition
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5:57 PM | obtuse and acute angle
updated definition
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5:46 PM | constructing the golden ratio of a segment
newest proposition
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5:37 PM | summing of areas of rectangles viii
newest proposition
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5:35 PM | summing of areas of rectangles vii
updated proposition
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5:23 PM | summing of areas of rectangles vi
newest proposition
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5:19 PM | summing of areas of rectangles v
newest proposition
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5:13 PM | summing of areas of rectangles iv
newest proposition
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5:07 PM | summing of areas of rectangles iii
newest proposition
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11:47 AM | summing of areas of rectangles ii
updated proposition
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11:47 AM | summing of areas of rectangles ii geometric proof
updated proof
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11:47 AM | summing areas or rectangles
updated proposition
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11:35 AM | summing of areas of rectangles ii geometric proof
newest proof
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11:02 AM | summing of areas of rectangles ii
newest proposition

October 17, 2014

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10:35 PM | The Three Square Geometry Problem - Numberphile
The three square geometry problem presented, requires knowledge of right angles and angle sum of a triangle to solve. A great puzzle for a geometry lesson.
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