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Create Date / Rating Title / Blogger	Last Post	Comments	Views
05/11/2008 5:01 PM Muon Decay: CR4 Challenge (05/12/08) Pathfinder Tags: challenge questions	07/10/2008 9:18 AM	39	1556
04/06/2008 5:01 PM Fixing The Pump: CR4 Challenge (04/08/08) Pathfinder Tags: challenge questions	08/29/2008 6:18 AM	680	3391
01/20/2008 5:01 PM Beat Frequencies: Newsletter Challenge (01/22/08) Pathfinder Tags: challenge questions	01/30/2008 3:27 PM	104	7205
12/30/2007 5:01 PM Sparking would be bad: Newsletter Challenge (01/02/08) Pathfinder Tags: challenge questions	01/17/2008 2:24 PM	79	6043
12/09/2007 5:01 PM Earthquake Damage: Newsletter Challenge (12/04/07) Pathfinder Tags: challenge questions	02/09/2008 6:12 PM	136	11235
12/02/2007 5:01 PM Obsidian Tools: Newsletter Challenge (12/04/07) Pathfinder Tags: challenge questions	12/13/2007 6:53 AM	54	6535
11/25/2007 5:01 PM Camping Quandry: Newsletter Challenge (11/27/07) Pathfinder Tags: challenge questions User-tagged by 1 user	12/17/2007 3:41 PM	118	8322
11/18/2007 5:01 PM Elevator Action: Newsletter Challenge (11/20/07) Pathfinder Tags: challenge questions	01/07/2008 10:45 AM	182	7054
11/11/2007 5:01 PM Ejected Electrons: Newsletter Challenge (11/06/07) Pathfinder Tags: challenge questions	11/21/2007 6:49 PM	178	3946
11/04/2007 5:01 PM Funny Reflection: Newsletter Challenge (11/06/07) Pathfinder Tags: challenge questions	11/22/2007 5:38 AM	177	9772
10/28/2007 5:01 PM Floor Tiles: Newsletter Challenge (10/30/07) Pathfinder Tags: challenge questions	11/09/2007 10:44 AM	194	6750
10/21/2007 5:01 PM Heads on a Sunny Day: Newsletter Challenge (10/23/07) Pathfinder Tags: challenge questions	11/02/2007 10:12 AM	318	6999
10/14/2007 5:01 PM Of Gum and Wrappers: Newsletter Challenge (10/16/07) Pathfinder Tags: challenge questions	11/06/2007 4:15 PM	96	7854
10/07/2007 5:01 PM San Juan and Ponce: Newsletter Challenge (10/09/07) Pathfinder Tags: challenge questions	10/17/2007 9:23 PM	170	6658
09/30/2007 5:01 PM The Film on the Windows: Newsletter Challenge (10/02/07) Pathfinder Tags: challenge questions	11/06/2007 3:40 PM	175	8085
09/23/2007 5:01 PM Playing the Didgeridoo: Newsletter Challenge (09/25/07) Pathfinder Tags: challenge questions	05/28/2008 12:01 AM	143	7417
09/17/2007 9:14 AM AM vs. FM: Newsletter Challenge (09/18/07) Pathfinder Tags: challenge questions	10/03/2007 7:29 AM	144	7303
09/09/2007 5:01 PM Tropical Vacation: Newsletter Challenge (09/11/07) Pathfinder Tags: challenge questions	10/06/2007 7:08 AM	108	9155
09/02/2007 5:01 PM Wedding Predictions: Newsletter Challenge (09/04/07) Pathfinder Tags: challenge questions	11/06/2007 3:50 PM	51	5469
08/12/2007 5:01 PM Measuring Solar Power: Newsletter Challenge (08/14/07) Pathfinder Tags: challenge questions	08/26/2007 5:52 AM	131	7699
08/05/2007 5:01 PM The Widgetator: Newsletter Challenge (08/07/07) Pathfinder Tags: challenge questions User-tagged by 2 users	08/15/2007 3:55 PM	108	5875
07/29/2007 5:01 PM And the next number is: Newsletter Challenge (07/31/07) Pathfinder Tags: challenge questions	08/21/2007 4:34 PM	160	6841
07/22/2007 5:01 PM Tangent Circles: Newsletter Challenge (07/24/07) Pathfinder Tags: challenge questions	08/04/2007 1:44 PM	142	8091
07/15/2007 5:01 PM Seasons, Cars and Fuel: Newsletter Challenge (07/17/07) Pathfinder Tags: challenge questions	07/11/2008 8:12 PM	305	9721
07/08/2007 5:01 PM Light Speed Motor Scooter: Newsletter Challenge (07/10/07) Pathfinder Tags: challenge questions	09/27/2007 6:28 PM	195	7468
07/01/2007 5:01 PM Hot Dog: Newsletter Challenge (07/03/07) Pathfinder Tags: challenge questions	07/17/2007 4:59 PM	176	11087
06/24/2007 5:01 PM The Wonders of Ice: Newsletter Challenge (06/26/07) Pathfinder Tags: challenge questions	07/27/2008 12:49 AM	130	10708
06/17/2007 5:01 PM Who Wants Chocolate?: Newsletter Challenge (06/19/07) Pathfinder Tags: challenge questions User-tagged by 1 user	07/06/2007 6:17 AM	283	10174
06/10/2007 5:01 PM Boxes and Coins: Newsletter Challenge (06/12/07) Pathfinder Tags: challenge questions	03/22/2009 12:26 PM	439	9236
06/03/2007 5:01 PM My Teachers Three Kids: Newsletter Challenge (06/05/07) Pathfinder Tags: challenge questions	07/12/2007 8:10 AM	159	12465
05/27/2007 5:01 PM Two Martian Moons: Newsletter Challenge (05/29/07) Pathfinder Tags: challenge questions	07/06/2007 8:06 AM	100	7415
05/20/2007 5:01 PM Solar Hot Water Panels: Newsletter Challenge (05/22/07) Pathfinder Tags: challenge questions	06/13/2007 12:45 AM	252	11817
05/13/2007 5:01 PM Harvest Moon: Newsletter Challenge (05/15/07) Pathfinder Tags: challenge questions	05/26/2007 3:06 AM	254	7501
05/05/2007 5:01 PM Spinning Wheel, Spinning True: Newsletter Challenge (05/08/07) Pathfinder Tags: challenge questions	05/31/2007 9:08 AM	189	9364
04/29/2007 5:01 PM Game Show Probability: Newsletter Challenge (05/01/07) Pathfinder Tags: challenge questions	06/29/2007 6:31 AM	344	10251
04/22/2007 5:01 PM Why Won't The Car Start?: Newsletter Challenge (04/24/07) Pathfinder Tags: challenge questions	05/15/2007 8:51 PM	162	14417
04/15/2007 5:01 PM Shocking Cars: Newsletter Challenge (04/17/07) Pathfinder Tags: challenge questions	05/22/2007 2:25 PM	253	14358
04/08/2007 5:01 PM Injection Molded Parts: Newsletter Challenge (04/10/07) Pathfinder Tags: challenge questions	07/30/2007 9:54 AM	135	8587
04/01/2007 5:01 PM Burglars and BBs: Newsletter Challenge (04/03/07) Pathfinder Tags: challenge questions	05/01/2007 7:24 PM	243	10981
03/25/2007 5:01 PM Blowin' Across the Lake: Newsletter Challenge (03/27/07) Pathfinder Tags: challenge questions	03/19/2009 5:58 AM	360	10004
03/18/2007 5:01 PM Cones and Particles: Newsletter Challenge (03/20/07) Pathfinder Tags: challenge questions	04/06/2007 4:37 PM	62	4929
03/11/2007 5:01 PM Blocks of Ice: Newsletter Challenge (03/13/07) Pathfinder Tags: challenge questions	04/28/2007 6:46 AM	209	11874
03/04/2007 5:01 PM Bouncing Balls: Newsletter Challenge (03/06/07) Pathfinder Tags: challenge questions	06/07/2008 4:13 PM	205	9392
02/25/2007 5:01 PM Grandfather's Age: Newsletter Challenge (02/27/07) Pathfinder Tags: challenge questions	03/07/2007 6:48 PM	104	7393
02/11/2007 5:01 PM Six Coins: Newsletter Challenge (02/13/07) Pathfinder Tags: challenge questions User-tagged by 1 user	08/19/2009 5:42 AM	116	6977
02/04/2007 5:01 PM Deck of Cards: Newsletter Challenge (02/06/07) Pathfinder Tags: challenge questions User-tagged by 1 user	11/13/2007 10:56 AM	116	7213
01/28/2007 5:01 PM Trawling: Newsletter Challenge (01/30/07) Pathfinder Tags: challenge questions	02/17/2007 9:15 PM	63	9676
01/21/2007 5:01 PM Counterfeit Coins: Newsletter Challenge (01/23/07) Pathfinder Tags: challenge questions	02/05/2007 3:51 PM	107	11775
01/14/2007 5:01 PM Warehouse Quarantine: Newsletter Challenge (01/16/07) Pathfinder Tags: challenge questions	02/05/2007 9:55 AM	64	10363
01/07/2007 5:01 PM Rattling Can: Newsletter Challenge (01/09/07) Pathfinder Tags: challenge questions	01/22/2007 9:13 AM	69	13334

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