Code a Calculator with Scratch: Step by step instructions with full scripts included

This is my Scratch project book about program a screen calculator for my primary school students.
It is an example of how coding could help children turn their ideas into something real.

This book contains 8 chapters. Each chapter based on a question and then work through for answers. The project begin at playing Scratch math blocks, then introduce methods of coding for calculation, like changing display and making keypad buttons. Start with fix numbers and single digit, and develop into more numbers, more digits and mix operators calculation.

This book involved with some math concepts in different levels. Methods of solving math expression by coding are explained in details.

Each chapter has a workable outcome. The limit in function of the outcome is showed and that make another section to be followed for improve.

The last chapter lead to a calculator project for math operation with brackets.

Contents of this book cover following topics.

• Code for keying number,
• Code to form multiple digits number,
• Code to calculate multiple terms operation,
• Code to calculate for mix operators,
• Code to solve operation with brackets.

Full scripts are included at end of each section.