- Transforming Learning through 21st Century Skills: The Who Took My Chalk? Model for Engaging You and Your Students
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From $25.45 (New)
From $25.45 (New)
| Last Seen | |
| Highest | $35.47 Mar 21, '14 |
| Lowest | $25.45 Sep 15, '14 |
| Average | $26.05 (Overall average) |
| Added | Jan 31, 2014 |
| Latest | $16.83 Apr 16, '16 |
| Highest | $30.00 Feb 23, '16 |
| Lowest | $2.98 Nov 3, '15 |
| Average | $20.09 (30d avg) $27.35 (90d avg) $21.29 (180d avg) $12.82 (365d avg) $9.37 (Lifetime average) |
| Added | Jan 31, 2014 |
| Latest | $1.74 Apr 16, '16 |
| Highest | $48.88 Jan 15, '16 |
| Lowest | $0.01 Oct 30, '15 |
| Average | $5.04 (30d avg) $12.72 (90d avg) $11.48 (180d avg) $5.58 (365d avg) $3.25 (Lifetime average) |
| Added | Jan 31, 2014 |
30 day average: 1,303,816
90 day average: 872,298