Exploding Dots

4.1 Welcome

Lesson materials located below the video overview.

Okay. Let’s keep working with the \(1 \leftarrow\) machine.

 

So far we’ve made sense of addition and multiplication. But we skipped over subtraction. Why? Because I don’t believe in subtraction! To me, subtraction is just the addition of the opposite.

 

Let’s explore what I mean by this.

 

 

Supplementary Content for this Experience:

PDF files of this first chapter

Chapter 4 EXPLODING DOTS (English)

Chapter 4 EXPLODING DOTS Bulgarian (Translated by Stanislav Chobanov)

Chapter 4 EXPLODING DOTS Chinese (Translated by Chee Wei Tan)

Chapter 4 EXPLODING DOTS Serbian (Translated by Aleksandra Ravas)

Chapter 4 EXPLODING DOTS Spanish (Translated by Cindy Weitzman)

COMING SOON:

A PDF guide for teaching this experience

Scolab‘s fully interactive web experience

Additional apps by Geogebra, Wolfram, Chee Wei Tan, Ken Wessen, Ulrich Kortenkamp, and more!

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