Comments on: What Can You Do With This: Gimme Friction / Taberinos

By: Jeff Trevaskis

Jeff Trevaskis — Wed, 26 May 2010 12:42:57 +0000

Gimme Friction is a great game Dan. Simple to play but very addictive. If you can extract some Maths from it then you are on a winner. Keep up the great WCYDWT posts. I am plucking up my courage to post a few of my ideas on my Webmaths blog.
Cheers, Jeff.

By: Paul E. Black

Paul E. Black — Thu, 20 May 2010 13:10:04 +0000

In step 4 you say, “… in a frictionless system like this, the incoming angle equals the outgoing angle.” The system has friction. Maybe the way to put that is “… in a system without outside forces …”

By: Dan Meyer

Dan Meyer — Thu, 20 May 2010 01:12:09 +0000

DaoudaW: How do you create the multiple exposure screen shots? I’ve tried different things, but there must be an easier way!

I recorded the screen using ScreenFlow and converted it into a screencast. I used QuickTime Pro to turn the screencast into an image sequence. Then I imported all the layers into Photoshop and selectively masked out the little ball in each frame. In other words, if there's any easy (or cheap) way to do this, you won't find it here. Sorry.

Kris: Any suggestions for kids that don’t have computers in the room?

Sure. This particular case demands a lot of practice so you'd have to print out a lot of mini-examples like in step eight above. You'd also have to have the actual videos for each practice example queued up so students could check their predictions for the path of the ball. I apologize I haven't provided those resources. One of these days.

By: Kris Kramer

Kris Kramer — Wed, 19 May 2010 14:59:33 +0000

Any suggestions for kids that don’t have computers in the room?

By: DaoudaW

DaoudaW — Wed, 19 May 2010 09:48:37 +0000

How do you create the multiple exposure screen shots? I’ve tried different things, but there must be an easier way!

By: Dan Meyer

Dan Meyer — Tue, 18 May 2010 19:38:46 +0000

Yep. Love it. Tickles my math fancy.

By: Steven Kimmi

Steven Kimmi — Tue, 18 May 2010 19:19:51 +0000

Just wondering if you’ve seen this? http://www/

By: tonypa

tonypa — Sun, 18 Apr 2010 15:35:12 +0000

Why are all your screen shots from Gimme Friction Baby game? (I am joking, thank you for mentioning Taberinos)

I wish you would use original link instead of driving traffic toward big portal. Gimme Friction Baby was designed by Wouter Visser for Game Design Competition run at JayIsGames

http://jayisgames.com/archives/2007/08/gimme_friction_baby.php

And while I am here, you can find many more games at my own site too :)

By: Dan Meyer

Dan Meyer — Sun, 18 Apr 2010 14:56:47 +0000

@Stacy, if they can answer for a given set of pre-existing circles and a given cannon angle the location and size of the next circle, I'd say they've done something enormous. I shudder to think about scaffolding that task, though.

By: Stacy

Stacy — Sun, 18 Apr 2010 01:43:03 +0000

Beyond the questions of collisions, I’m also tossing around something for the circle unit we’ll be hitting soon at the end of this year. Give students the coordinates and radii of several circles already played in the field. Then give the final resting place for a fired circle. What will the final radius of the circle be? Still tossing it around, but that’s what I’ve got so far.