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The Hindu article about the STEMLAND

Making, tinkering and engineering their way to knowledge School uses theory of constructivism, which says knowledge is not taught to a learner At the STEM (Science Technology Engineering Mathematics) Land and Resource Centre at Udavi School in Auroville, young Hemasundar is busy...

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Getting ‘officially’ started in STEMLAND

The inauguration of STEMland has just happened. It feels good to be part of something different and useful for children as well as adults who are into math, technology, electronics etc… Over the past month and a half STEMland has given me...

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Timer in Python

I encountered a situation where I had to check if a function is running for a certain time. The below method called ‘after’ was very useful. This registers an alarm callback that is called after a given time. Syntax : after(delay_ms, callback=None,...

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Creating a Spice Model from a .subckt file

The following video demonstrates on how to create a spice model of a component, from a .subckt file which can be acquired from the retailer. following is a spice model file for a bridge rectifier ; mb6s data sheet : MB6S_MCC –...

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Op-Amp positive feedback design

The following circuit has a voltage source that operates between 3V and 5V and is connected to the Op Amp’s positive input, across a resistor divider R2 and R1 at the node Va. The simulation is run for 200m secs. The design...

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Science Technology Engineering and Mathematics (STEM):

STEM Land: STEM Land  is a place for ‘Learning’ which we are creating in Udavi school. The vision behind the STEM is learning based on Concepts, practical observation & abstraction. In short “Mediocrity to Excellence“. It has large variety of materials (...

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LtSpice – Introduction

LTspice IV is a high performance SPICE simulator, schematic capture and waveform viewer with enhancements and models. The simulator software can be downloaded from the following link: ltspice.linear-tech.com/software/LTspiceIV.exe The following is a circuit on how to use a switch ” .model ”...

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Area with GeoBoards

I was doing shapes( squares, rectangles and triangle) with 4th and 5th grade children. Then I thought of introducing areas also to them. Doing areas with formulas would be a little difficult for them as they are not yet fully comfortable with...

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Calling C function from Python using thread

ThreadTest: Lets loot at a sample program for better understanding of threads. It was written in python extension C( calling C function from python). This is an example for parallel processing. So I made a program to print string ( some words...

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