Paper folding method to learn fractions;

link to download PDF from At Right Angles

A scratch project was done with the 7th graders to show the same with the pen function.

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# Category: Scratch

## Fraction multiplication with paper folding technique

## Graph with Abinash

## Number line scratch project.

## To find the length of the arc

## Area of Rhombus = Half the area of a Rectangle given d1, d2

## Area of a Trapezium / Parallelogram with Scratch

## GCD Scratch program

## Finch: using distance sensor

## Learning Scratch programming (Gujarat Team )

## Reducing fraction to its lowest form

learn, grow, work, teach

Paper folding method to learn fractions;

link to download PDF from At Right Angles

A scratch project was done with the 7th graders to show the same with the pen function.

Abinash a student from the 8th grade at Udavi school started his work on graph and initially had a little difficulty plotting points. He wanted to create a game for others to understand the concept and so together we started to mind storm on how and what the game should do.

Then he saw a picture on his mathematics text book and decided to create a point follower game at the end of which the user will get an image.

The program was coded in Scratch.

~Sundar

Pratap

Children in 8th were doing rational numbers and they wanted to build a project to demonstrate their learning . They have build a project in number line. This scratch program shows how to find the fraction in a number line. The numerator is ( a random number is asked from the user. The program chooses a number 0 to 3 x the user number ) and the numerator is also generated randomly (2 – 10). The user needs to find the answer for the question. The user needs to give to a value for numerator and a value for the denominator.

This scratch program shows how to calculate the length of arc given a valid angle (20 to 360) and radius (50 to 200). The value of angle and radius should be given. It requires two input from the user. If the user doesn’t give a valid input it sets a random value for angle and radius.

Pratap & Sundar

The following program demonstrates that the area of a Rhombus is half the area of a rectangle of given dimensions d1 and d2 and how the pieces can be moved around to form it.

~Saranya / Sundar

The 7th graders were working on measurements. The following scratch program shows how to find the area of a trapezium and parallelogram.

GCD program:

Counting number iteration( in step variable) taken to calculate GCD using Euclid’s Division Algorithm.

Draw rectangle for given two numbers and then draw squares using GCD value to show “Two given and their product” are divisible by GCD.

Link to scratch code : link to program

An alternate scratch program, user name : udavi

Ranjith / Sundar

-Arun, Abilash

Abilash and I were testing the distance sensors in Finch Robot, which lead us to do a simple project where the Finch has to go through a track we made.

~Saranya and Murali

(They refer to Gujarat team) Rahul and his team from Gujarat came to visit Udavi STEMland and Isai Ambalam school STEM land. They were 4 of them and they run residential school at gujarat. They take mathematics and science for their children. They want to observe the classes (@STEm land) how we teach at STEM land. They were very surprised that we don’t teach in STEM land. They came to know about us through internet. Suddenly they planned to visit. They came only to visit STEM land ( March 28th ) . They also stayed with Isai Ambalam children for their sleep over. They wanted to observe the classes and activities. During sleep overs children go for their drumming circle they were curious to go with children and they want to learn drumming.

In Udavi children presented their projects and children shared their experience with them. They wanted to learn about scratch. I and Murli took scratch course for them with help of my team. We started with basic and Rahu tried his best and he helped his team to familiar with scratch. The did their best and they are continuing relationship with us. We are organizing robotics course and programming4matheducatorrs workshop for in and around Auroville youngster and mathematics teacher. Rahul is signed up to attend P4ME workshop.

The following scratch program asks and reduces a random fraction generated to its lowest form. The code uses mod function to check and evaluate if the numerator and denominator can be divided without any remainders by a certain given number by the user. At the same time a pictorial representation of the fraction is drawn so as to see all the reduced parts are equivalent and look the same.