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Area Model of Partial Products
Elementary math teachers know the importance of this model in teaching the concept of applying distributive property in area model.
The idea is to break one large area (which represents the product of two numbers) into several pieces (products of smaller numbers), then to find the areas of the pieces individually, and finally add to get the area of the whole (the product of the given numbers).
Long Division Simulation – Remainder
If you or your student or child are having difficulties in learning long division, then you will find this simulation comprehensive and instructional, that guides the learner through the process step by step. This application is for long division with remainder. Another application on long division with float quotient is also available in the simulations section.
A fix to the “Phase Difference Between Sound Waves Simulation”
In response to valuable feedback about the simulation “Phase Difference Between Sound Waves Simulation,” highlighting the slight inaccuracy of the obtained speed of sound of air, which was found to be about 349 m/s, this inaccuracy was fixed, so now it gives 346 m/s as it is supposed to give at room temperature.
Old Simulations
These simulations were made using the Adobe Flash/AcrtionScript. You can download them and run then in Windows.
Refraction of Light Simulation
With this simulation, you can experiment the refraction of light between air and a transparent semi-disk. You can choose the material of the disk from a list of materials. Also, you can determine the index of refraction of the semi-disk when you apply Snell’s law to measurements you take in the simulation.
Updates to Free Fall Simulation
I updated the graphical user interface for easier interaction and better fitting in the browser. Also, I made a minor bug fix to the code.