Build a Marble XOR GATE - Homeschool Digital Logic #3
Channel: Masked Marble
Date: 2021-05-19

Build working computers out of marble runs!

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Build a digital logic circuit using the GraviTrax marble run system. GraviTrax marble calculations = GraviCalc! Recommended for ages 8 and up.

Lesson 3: The “XOR Gate". Build this week's GraviCalc marble computer that performs the XOR function.

Parents, in this lesson, kids will not only build the XOR gate digital logic circuit using a GraviTrax marble run, but by running the track they will also generate a logic table that maps the gate's inputs and outputs. It's very easy; my 8 yr old had no problem understanding the concepts and correctly filling out the table. You can have them hand-draw the logic table, or print out the blank table provided in the links below.

Blank XOR Gate Logic Table for Kids to Fill Out:

GOOGLE SHEETS FORMAT - https://docs.google.com/spreadsheets/d/1xFGzHdr6W7400zNd5CwH6k8PXQeOR4Z31IS-7GICBk4/edit?usp=sharing
PDF FORMAT - https://drive.google.com/file/d/1Lg-YnRsdTqUgM6ZTzv0llxRTK4XuURkn/view?usp=sharing

GraviTrax sets required: Any Gravitrax Starter Set (Starter, XXL, Vertical, Obstacle, or Speed)

Get build instructions for the XOR Gate track by entering this code into the Ravensburger GraviTrax app: WMWNWAVAKC
Or use this direct link: https://gravitrax.link.ravensburger.com/code/WMWNWAVAKC

Video shot on an iPhone SE (2020). Video processed in iMovie for iOS. Cover photo made in Snapseed app for iOS.

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