Coding & Inquiry – Determining Integer Operation Rules Through Observation

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Coding & Inquiry - Determining Integer Operation Rules Through Observation

In this challenge, students can code an app to determine the rules for addition, subtraction, multiplication or division of two integers.

Classroom application:

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After building this Scratch app, have students run through a set of different numbers and record their observations (e.g.: multiplying two negative numbers yields a positive product). From here, have them determine appropriate rules for addition, subtraction, multiplication and division rather then you telling them. It may take some time for them to make a conclusion, but that in itself is a mini Science lesson.

Feel free to use the source and extend it for three or even four integers.

screen-shot-2016-09-13-at-7-16-59-pm

Here is the demo:

 

Project page: https://scratch.mit.edu/projects/121099775/

Extension:

In the next class, have students determine “why” the rules are what they are (e.g.: using temperature or money). This would provide a great opportunity for observation and conversation in terms of assessment.

 

 

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