Introduction: How to Make a Predictor

It´s easy, fun and so much more!
Take it with you to school and watch people get exited!


jmchenry3 (author)2012-08-26

I was trying to reamber how to make one a couple of weeks ago. Glad to find this.

letstormdufield (author)2012-08-20

Make an Instructable called "how to use a predictor"