Posts

May 23, 2013

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5:31 AM | Una figura geométrica que nunca te enseñaron: El pseudo-triángulo

Volvamos por un momento a aquella tierna infancia en que todo era nuevo y rebosabas ganas de aprender. Trata de recordar ese día en que te enseñaron a distinguir las figuras geométricas: Esto es un círculo, aquello un triángulo, lo de más allá un cuadrado. Si, unos años más tarde, al niño que llevas dentro todavía le quedan ganas de aprender, con esta entrada descubrirás una nueva figura que nunca te [â€¦]

May 22, 2013

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5:10 PM | Semper Amicis Hora: didáctico reloj de sol en Hita

En una visita a Hita, Guadalajara, nos encontramos en su plaza del Arcipreste, un magnífico reloj de sol, con todas sus líneas, y que nos proporciona la manera de entender y enseñar el "funcionamiento" de los relojes de sol. Esta el la aportación de Sacit Ámetam a la edición 4.1231 del Carnaval de Matemáticas del mes de mayo

May 21, 2013

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9:36 PM | Películas de jabón y superficies mínimas

Esta entrada participa en la Edición 4.1231 del Carnaval de Matemáticas cuyo anfitrión es el blog Matemáticas interactivas y manipulativas. Video donde se comprueba que con una solución jabonosa podemos visualizar los problemas de Recorridos Mínimos y Superficies Mínimas que en muchas ocasiones matemáticamente son difíciles de calcular y visualizar. Explicaciones en el siguiente fichero Superficies_m_nimas.pdf

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8:33 PM | Morley trigonométrico

Una entrada de Guirnalda matemática para el carnaval de mayo: Morley trigonométrico Saludos.

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1:48 PM | [Alan Schoenfeld] Meeting the Challenges of Common Core Standards

Schoenfeld divided his talk into three parts. 1. Students are currently not engaging in mathematical sense-making. He gave the example of the following problem posed to 97 first- and second-grade students. There are 26 sheep and 10 goats on a...

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1:39 PM | Como encontrar e en el triángulo de Pascal

Hola : les mando mi contribución para esta edición: ¿Como se relacionan e y el triángulo de Pascal? Un reciente descubrimento logra relacionarlos: http://simplementenumeros.blogspot.com.ar/2013/05/1141-la-constante-e-en-el-triangulo-de.html

May 20, 2013

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10:35 AM | Fútbol, Voronoi y un poco de Geogebra

Esta entrada participa en la Edición 4.1231 del Carnaval de Matemáticas cuyo anfitrión es el blog Matemáticas interactivas y manipulativas. El portero del equipo contrario saca de puerta; el balón vuela, vuela y vuela. La tensión se respira en el ambiente, empate a 1 y quedan 2 minutos para acabar el partido. El balón toca el suelo y los jugadores de tu equipo favorito se miran entre si. -¿Quién debe ir a por el [â€¦]

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7:07 AM | 1089 [Tito Eliatron Dixit]

No, no es un año. Es un número muy curioso con el que hacer un sencillo truco matemático. En el post 1089 explico por qué funciona.

May 16, 2013

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9:39 PM | Budget 2013: where will your tax go?

An interactive to show how personal income tax is used by the Government.

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2:25 PM | [Uri Treisman] Keeping Our Eyes on the Prize

On April 19, 2013, the third day of NCTM’s annual meeting in Denver, Uri Treisman gave a forty-minute address on equity that Zal Usiskin, director of the University of Chicago’s School Mathematics Project, called the greatest talk he’d ever heard...

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10:07 AM | GeoGebra 20-20 STEM Challenge: Call for New Interns and Mentors!

Tran Minh Phuc and Bence Karpati have successfully graduated their Geogebra Internship.Following a presentation with Milestone students in Budapest GeoGebra offices at the end of last year, we agreed a challenge to identify and put together new and existing best … Continue reading →

May 15, 2013

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6:05 PM | The Unspoken side of the tenure experience

Everyone talks about how stressful the tenure process can be but no one talks about how emotionally loaded this experience can be. Not so much because you fear or worry about a negative outcome — this is just the outer … Continue reading →

May 14, 2013

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11:21 PM | WooTube

Video teaching for HSC and Preliminary Mathematics and Extension 1.

May 13, 2013

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7:44 AM | Ext 2 Integration - Lesson 1 Part 2 - Simon Borgert

Some slightly harder Ext 2 substitution questions. See also Part 1.

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7:42 AM | Ext 2 Integration - Lesson 1 - Simon Borgert

First lesson for Ext 2 Maths Integration topic -reviewing substitution techniques for integration.

May 12, 2013

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2:48 PM | [Jo Boaler] Promoting Equity Through Teaching For A Growth Mindset

As you can see from the picture, it was a packed house! After waiting in line for fifteen minutes, I was so lucky (and excited) to get a seat to hear Jo Boaler speak, even if my seat was in...

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2:48 PM | [David Dockterman] Developing Student Growth Mindsets

Dockterman is an adjunct lecturer of education at Harvard Graduate School of Education, and works for Scholastic Education as well. He walked us through definitions of a “fixed” mindset and a “growth” (or “incremental”), based on Carol Dweck’s research. He...

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2:48 PM | [Enrique Galindo] Using Problem-Based Learning Tasks to Foster Reasoning and Proof

In this session several teachers from Indiana shared their experience using problem-based learning in their classroom. The first example that one of the teachers gave was a PrBL which challenged students to consider how long they would have to grow...

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2:48 PM | [Janet Andreasen] Using Teacher- and Student-Made Videos in the Mathematics Classroom

Janet, Deborah, and Zyad advocated using teacher-made and student-made videos in the classroom, both for instruction and assessment. Janet suggested that student-created videos can give teachers the opportunity to view students’ problem-solving process instead of just analyzing the end result....

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2:48 PM | [Kenn Pendleton] Technology: A Portal to Exploration and Discovery

A big theme through the NCTM conference was using questions to prompt students to explore mathematics. I am a big proponent of inquiry-based learning, so I was excited to find other teachers with similar passions. I was able to collect...

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2:48 PM | [Cindy Percival] Carrots Before Horses

a.k.a. Experience before Formalization This session was task-oriented, which was a great way to start the conference. It introduced several exploration activities meant to be the introduction to a unit or topic. These activities were mostly taken from a textbook,...

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2:48 PM | [Frank Carrillo] Access Proof Through Geometric Model

This was a great session that was almost completely hands-on. We started by building a cylinder around a sphere and then moved into proving that the sphere’s volume is 2/3 the volume of a cylinder. The other activities were fun,...

May 10, 2013

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9:47 AM | Patrocinadores

Patrocinadores temporales La esfera de los libros

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3:11 AM | [Karim Ani] “Keeping It Real”

Preliminary note: This recap cannot capture Karim’s charm and rapport with the large crowd. My apologies for the inadequacy. Karim opened with his thesis — We should use real-world topics to teach math in a different way — and he...

May 09, 2013

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1:04 PM | Adaptive learning and assessment with ToKToL

The content is focused on higher level maths, covering Functions and grphs, sequences/series, vectors, complex numbers and a lot of calculus up to a high level. Students learn by going through questions - the difficulty of the questions is constantly adjusted to their estimated ability based on an adaptive algorithm. Short summary texts come with the answer to each question to provide background understanding. All open access - login needed only for upcoming further features.

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4:00 AM | Peter Taylor to receive prestigious research award

CMS member Peter Taylor (Queen`s) has been selected as the recipient of the 2013 Partners in Research (PIR) Mathematics Ambassador Award. Winners of the PIR Ambassador awards are selected based on their excellence in Canadian research and for contributions to public outreach activities. Peter Taylor will be recognized at the PIR National Awards on June 2, 2013.

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4:00 AM | 2013 Canadian Mathematical Olympiad winners announced

The Canadian Mathematical Society (CMS), with the support of Sun Life Financial, is pleased to announce the winners of the 45th annual Canadian Mathematical Olympiad (CMO) competition.

May 08, 2013

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9:54 PM | [Frank Lester] Whatever Happened to Problem Solving in the Math Curriculum?

Frank Lester was the editor of the 1234-page Second Handbook of Research on Mathematics Teaching and Learning. This was an interesting talk, not so much for any specific content but for how it was put together. Lester began the talk...

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5:51 AM | Race Track Maths

Race track maths is a web-based interactive unit of work to support students learning about perimeter and area and scale. It includes Flash interactive activities, video segments demonstrating mathematical techniques and practice questions with feedback. Includes teacher guide.

May 06, 2013

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10:06 PM | [Steve Leinwand] Essential Mindsets for Tilling the Soil for the Common Core State Standards

There is perhaps nobody better at shouting math education’s rallying cry than Steve Leinwand. Knowing that my notetaking could not keep up, I recorded Steve’s talk for later review. Graciously, Steve has granted me permission to post it here. (Which...