http://www.merlot.org:80/merlot/ A search of MERLOT materials Copyright 1997-2013 MERLOT. All rights reserved. Sun, 26 May 2013 02:03:48 PDT Sun, 26 May 2013 02:03:48 PDT http://www.merlot.org:80/merlot/images/merlot.gif http://www.merlot.org:80/merlot/ 44 34 http://www.merlot.org/merlot/viewMaterial.htm?id=314085 In this applet, the user applies Euler's Method to modeling population growth using the Malthus exponential model and the Verhulst constrained growth model. After finding the Euler solution, the user can check the solution with the Adaptive Euler Approximation or with a slope field. Also, the user can enter an exact solution obtained from separating variables (or whatever) and again check the Euler solution graphically. http://www.merlot.org/merlot/viewMaterial.htm?id=401116 This site has has interactive explanations and simulations of math from alegrbra to trigonometry. Just click the "interactive" tab on the top left menu and you can choose different simulations. It includes, the complete definition of parabolas, reaching beyond the ability to graph into the realm of why the graph appears as it does. It also has vivid descriptions of angles including circle angles for geometry. It also has calculators for principal nth roots, gdc, matrices, and prime factorization. It's definitely worth checking out. Quote from site: "A parabola is actually a locus of a point and a line. The point is called the focus and the line the directrix. That means that all points on a parabola are equidistant from the focus and the directrix. To change the equation and the graph of the interactive parabola below just click and drag either the point A, which is the focus, or point B, which controls the directrix." This is an interactive site that allows people to change the graph to understand why directrix and focus dictate parabolic graphs. http://www.merlot.org/merlot/viewMaterial.htm?id=687149 To calculate the value of an apple and an orange from 2 purchases.About mental arithmetic, with a pre-algebra tool introducing the Gaussian elimination.In the mirror site, there's the Android 2.2 (and up) version of this program. http://www.merlot.org/merlot/viewMaterial.htm?id=688991 To calculate the value of apple, orange, pear from 3 purchases.About mental arithmetic, with a pre-algebra tool introducing the Gaussian elimination. http://www.merlot.org/merlot/viewMaterial.htm?id=689015 To calculate the value o apple, orange, pear and lemon from 4 purchases.About mental arithmetic, with a pre-algebra tool introducing the Gaussian elimination. http://www.merlot.org/merlot/viewMaterial.htm?id=85013 A free, interactive tool to graph any mathematical function. Developed with Macromedia Flash and Action Script programming language. http://www.merlot.org/merlot/viewMaterial.htm?id=709006 Application on addition of fractions.Working with italian pizzas, improper fractions and mixed fractions.The program raises the problem from a hypothetical party where the guests ask for a specific pizza fraction. Guests can only choose two types of pizza for each party.The program calls for the total amount you end up ordering pizza.In order to solve the most difficult problems is a tool to help solve, finding the common denominator.There is a video as support material: http://youtu.be/TVTzNwDPmLU(Video soundtrack: 'O surdato nnammurato' (written by: Aniello Califano Composer: Enrico Cannio) Voice by: Beniamino Gigli) (In Neapolitan language)This program has a castilian (spanish) version and catalan version in the nummolt site:״Cuanta pizza encargamos?״ & "Quanta pizza encarreguem?״There's a free Android (V2.2 and up) version in the mirror link: (multilingual version: en, ca, es, fr, it)https://play.google.com/store/apps/details?id=nummolt.howmuch.pizza http://www.merlot.org/merlot/viewMaterial.htm?id=557508 Los Manipuladores Virtuales son los objetos visuales que ayudan a ilustrar las relaciones matemáticas y sus aplicaciones. estos manipuladores permiten a los estudiantes para examinar visualmente, explorar y desarrollar conceptos.La Biblioteca Nacional de Manipuladores Virtuales (NLVM)de la Universidad Estatal de Utah posee una colección NLVM de más de 100 programas de software interactivo, llamado "applets״, son un medio eficaz para acelerar y profundizar la comprensión de los estudiantes de matemáticas. http://www.merlot.org/merlot/viewMaterial.htm?id=564276 Compara las razones trigonométricas de un ángulo agudo en el triángulo rectángulo. De una manera didáctica, luego de indicar como se determinan las razones trigonométricas, queda la idea que las razones trigonométricas dependen de los lados del triángulo, siendo que dependen del ángulo. Con esta presentación interactiva queda en evidencia que las razones trigonométricas efectivamente dependen de los ángulos agudos del triángulo rectángulo. Sólo basta seguir las actividades que se encuentran en la parte inferior. Toda la presentación interactiva está realizada en geogebra. http://www.merlot.org/merlot/viewMaterial.htm?id=690282 To calculate the value of pear and apple from 2 purchases.About mental arithmetic, with a pre-algebra tool introducing the Gaussian elimination.Version in Spanish. In spanish is necessary to change oranges for pears.In spanish the quote is "You can't add pears and apples" (No se pueden sumar peras y manzanas)Para calcular el valor de una pera y una manzana a partir de dos compras.Sobre cálculo mental, con una herramienta de preálgebra que inicia en la eliminación de Gauss-Jordan. (Y la suma de polinomios)