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Buy from Amazon $34.95$3.20 $37.50 $25.00 $12.50 $0.00 Jul Sep Nov Jan Mar May Jul Sep Nov Jan Mar May 2014 2015 2016 $28.41, May 6 - May 9$27.26, May 6 - Jun 6$23.00, May 6 - May 10$27.44, May 10 - Jun 10$27.26, May 6 - Jun 6$21.00, May 10 - May 11$27.44, May 10 - Jun 10$27.26, May 6 - Jun 6$23.00, May 11 - May 13$27.44, May 10 - Jun 10$27.26, May 6 - Jun 6$24.24, May 14 8:36 am$34.32, May 15 - May 19$27.44, May 10 - Jun 10$27.26, May 6 - Jun 6$27.44, May 10 - Jun 10$27.26, May 6 - Jun 6$23.44, May 20 - May 27$29.45, May 29 - May 30$27.44, May 10 - Jun 10$27.26, May 6 - Jun 6$27.99, May 31 - Jun 2$27.44, May 10 - Jun 10$27.26, May 6 - Jun 6$30.68, Jun 4 - Jun 9$27.44, May 10 - Jun 10$27.26, May 6 - Jun 6$30.68, Jun 4 - Jun 9$27.44, Jun 7 3:16 pm$27.44, May 10 - Jun 10$27.99, Jun 9 - Jun 11$27.44, May 10 - Jun 10$27.26, Jun 8 - Jun 10$27.99, Jun 9 - Jun 11$27.16, Jun 11 - Jun 17$27.16, Jun 11 - Jun 17$29.45, Jun 11 - Jun 13$27.16, Jun 11 - Jun 17$27.16, Jun 11 - Jun 17$27.16, Jun 11 - Jun 17$27.16, Jun 11 - Jun 17$25.00, Jun 14 - Jun 16$34.51, Jun 17 - Jun 18$27.16, Jun 11 - Jun 17$27.16, Jun 11 - Jun 17$34.51, Jun 17 - Jun 18$30.08, Jun 18 - Jun 28$30.08, Jun 18 - Aug 8$30.08, Jun 18 - Jun 28$30.08, Jun 18 - Aug 8$26.09, Jun 20 - Jun 22$30.08, Jun 18 - Jun 28$30.08, Jun 18 - Aug 8$25.00, Jun 23 - Jul 1$30.08, Jun 18 - Aug 8$27.26, Jun 29 - Jul 26$25.00, Jul 3 - Aug 11$30.08, Jun 18 - Aug 8$27.77, Jul 26 - Aug 8$25.00, Jul 3 - Aug 11$29.78, Aug 9 - Aug 18$27.26, Aug 9 - Aug 18$25.00, Jul 3 - Aug 11$29.78, Aug 9 - Aug 18$27.26, Aug 9 - Aug 18$24.99, Aug 12 - Aug 15$29.78, Aug 9 - Aug 18$27.26, Aug 9 - Aug 18$23.50, Aug 17 - Aug 24$29.48, Aug 19 - Aug 25$27.82, Aug 19 - Sep 9$23.50, Aug 17 - Aug 24$29.48, Aug 19 - Aug 25$27.82, Aug 19 - Sep 9$22.61, Aug 25 - Aug 26$29.18, Aug 26 - Sep 1$27.82, Aug 19 - Sep 9$22.60, Aug 27 - Aug 30$29.18, Aug 26 - Sep 1$27.82, Aug 19 - Sep 9$22.59, Aug 31 - Sep 1$28.88, Sep 2 - Sep 9$27.82, Aug 19 - Sep 9$20.90, Sep 2 1:54 pm$28.88, Sep 2 - Sep 9$27.82, Aug 19 - Sep 9$20.86, Sep 3 5:48 pm$28.88, Sep 2 - Sep 9$27.82, Aug 19 - Sep 9$20.74, Sep 6 3:39 am$28.88, Sep 2 - Sep 9$27.82, Aug 19 - Sep 9$20.68, Sep 8 12:24 pm$28.88, Sep 2 - Sep 9$27.82, Aug 19 - Sep 9$20.59, Sep 9 5:41 pm$28.59, Sep 10 - Sep 22$27.26, Sep 10 - Oct 12$19.73, Sep 12 3:04 am$28.59, Sep 10 - Sep 22$27.26, Sep 10 - Oct 12$19.69, Sep 13 7:12 am$28.59, Sep 10 - Sep 22$27.26, Sep 10 - Oct 12$18.96, Sep 15 8:52 am$28.59, Sep 10 - Sep 22$27.26, Sep 10 - Oct 12$10.93, Sep 19 - Sep 22$29.30, Sep 24 - Nov 15$27.26, Sep 10 - Oct 12$10.51, Sep 24 - Sep 28$29.30, Sep 24 - Nov 15$27.26, Sep 10 - Oct 12$10.50, Sep 30 - Oct 14$29.30, Sep 24 - Nov 15$27.82, Oct 14 - Oct 17$10.50, Sep 30 - Oct 14$29.30, Sep 24 - Nov 15$27.82, Oct 14 - Oct 17$9.99, Oct 17 - Oct 23$29.30, Oct 20 - Nov 9$29.30, Sep 24 - Nov 15$9.99, Oct 17 - Oct 23$29.30, Oct 20 - Nov 9$29.30, Sep 24 - Nov 15$9.98, Oct 29 12:53 am$29.30, Oct 20 - Nov 9$29.30, Sep 24 - Nov 15$9.97, Nov 3 12:41 pm$29.30, Oct 20 - Nov 9$29.30, Sep 24 - Nov 15$9.96, Nov 9 - Nov 15$29.30, Sep 24 - Nov 15$27.26, Nov 15 - Nov 17$9.96, Nov 9 - Nov 15$29.59, Nov 17 - Nov 24$27.26, Nov 15 - Nov 17$9.95, Nov 17 - Nov 22$29.59, Nov 17 - Nov 24$29.57, Nov 21 1:02 am$9.95, Nov 17 - Nov 22$29.59, Nov 17 - Nov 24$29.53, Nov 22 2:46 am$9.95, Nov 17 - Nov 22$29.59, Nov 17 - Nov 24$29.19, Nov 24 2:16 am$9.96, Nov 24 - Nov 26$29.35, Nov 26 - Dec 5$29.15, Nov 26 3:05 am$9.96, Nov 24 - Nov 26$29.35, Nov 26 - Dec 5$29.19, Nov 28 12:24 am$9.95, Nov 28 - Dec 1$29.35, Nov 26 - Dec 5$29.15, Nov 29 11:49 pm$9.95, Nov 28 - Dec 1$29.35, Nov 26 - Dec 5$29.13, Dec 1 11:26 pm$9.95, Nov 28 - Dec 1$29.35, Nov 26 - Dec 5$27.26, Dec 3 - Dec 7$22.36, Dec 3 - Dec 7$29.59, Dec 7 - Dec 21$27.26, Dec 3 - Dec 7$22.36, Dec 3 - Dec 7$29.59, Dec 7 - Dec 21$26.30, Dec 9 - Dec 30$22.32, Dec 9 5:25 pm$29.59, Dec 7 - Dec 21$26.30, Dec 9 - Dec 30$21.96, Dec 11 6:42 pm$29.59, Dec 7 - Dec 21$26.30, Dec 9 - Dec 30$21.84, Dec 12 6:18 pm$29.59, Dec 7 - Dec 21$26.30, Dec 9 - Dec 30$21.69, Dec 14 4:23 pm$29.59, Dec 7 - Dec 21$26.30, Dec 9 - Dec 30$21.57, Dec 16 4:26 pm$29.59, Dec 7 - Dec 21$26.30, Dec 9 - Dec 30$21.23, Dec 21 3:00 pm$29.15, Dec 23 - Dec 29$26.30, Dec 9 - Dec 30$21.10, Dec 24 1:19 am$29.15, Dec 23 - Dec 29$26.30, Dec 9 - Dec 30$20.62, Dec 26 1:35 am$29.15, Dec 23 - Dec 29$26.30, Dec 9 - Dec 30$20.43, Dec 27 6:23 am$29.15, Dec 23 - Dec 29$26.30, Dec 9 - Dec 30$20.21, Dec 29 1:09 am$29.00, Dec 30 - Jan 1$27.75, Jan 1 - Jan 12$21.71, Jan 1 5:59 am$28.85, Jan 9 - Jan 13$27.75, Jan 1 - Jan 12$22.55, Jan 9 6:38 pm$28.85, Jan 9 - Jan 13$27.75, Jan 1 - Jan 12$22.47, Jan 12 5:38 am$28.85, Jan 9 - Jan 13$27.26, Jan 13 5:58 pm$22.41, Jan 13 5:58 pm$28.70, Jan 15 - Feb 8$27.68, Jan 15 - Jan 18$22.37, Jan 15 11:20 am$28.70, Jan 15 - Feb 8$27.68, Jan 15 - Jan 18$22.31, Jan 17 3:59 am$28.70, Jan 15 - Feb 8$27.68, Jan 15 - Jan 18$22.27, Jan 18 7:55 pm$28.70, Jan 15 - Feb 8$27.26, Jan 20 11:24 am$22.21, Jan 20 11:24 am$28.70, Jan 15 - Feb 8$27.68, Jan 22 - Jan 28$22.14, Jan 22 2:35 am$28.70, Jan 15 - Feb 8$27.68, Jan 22 - Jan 28$21.97, Jan 25 5:55 am$28.70, Jan 15 - Feb 8$27.68, Jan 22 - Jan 28$21.67, Jan 26 11:41 pm$28.70, Jan 15 - Feb 8$27.68, Jan 22 - Jan 28$21.49, Jan 28 3:11 pm$28.70, Jan 15 - Feb 8$27.49, Jan 30 - Feb 3$17.46, Jan 30 10:14 am$28.70, Jan 15 - Feb 8$27.49, Jan 30 - Feb 3$17.40, Feb 1 4:36 am$28.70, Jan 15 - Feb 8$27.49, Jan 30 - Feb 3$17.34, Feb 3 1:18 am$28.70, Jan 15 - Feb 8$27.26, Feb 4 - Feb 6$17.26, Feb 4 7:01 pm$28.70, Jan 15 - Feb 8$27.26, Feb 4 - Feb 6$21.34, Feb 6 1:04 pm$28.70, Jan 15 - Feb 8$20.00, Feb 8 - Mar 8$19.72, Feb 8 8:07 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.64, Feb 10 3:02 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.47, Feb 11 9:59 pm$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.39, Feb 14 3:40 pm$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.34, Feb 16 11:47 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.29, Feb 18 9:56 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.84, Feb 20 7:48 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.78, Feb 22 5:44 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.48, Feb 24 4:19 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.42, Feb 26 2:11 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.84, Feb 28 12:04 am$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.88, Mar 2 5:46 pm$28.41, Feb 10 - Mar 14$20.00, Feb 8 - Mar 8$19.77, Mar 4 2:17 pm$28.41, Feb 10 - Mar 14$22.60, Mar 6 - Apr 9$20.00, Feb 8 - Mar 8$28.41, Feb 10 - Mar 14$27.24, Mar 9 2:04 pm$22.60, Mar 6 - Apr 9$28.41, Feb 10 - Mar 14$23.85, Mar 11 11:48 pm$22.60, Mar 6 - Apr 9$28.41, Feb 10 - Mar 14$23.33, Mar 14 6:36 am$22.60, Mar 6 - Apr 9$29.35, Mar 17 - Mar 30$24.24, Mar 17 6:42 am$22.60, Mar 6 - Apr 9$29.35, Mar 17 - Mar 30$24.22, Mar 19 11:00 am$22.60, Mar 6 - Apr 9$29.35, Mar 17 - Mar 30$25.34, Mar 20 - Mar 23$22.60, Mar 6 - Apr 9$29.35, Mar 17 - Mar 30$23.72, Mar 25 9:45 am$22.60, Mar 6 - Apr 9$29.35, Mar 17 - Mar 30$23.25, Mar 27 4:55 pm$22.60, Mar 6 - Apr 9$29.35, Mar 17 - Mar 30$24.22, Mar 30 2:13 am$22.60, Mar 6 - Apr 9$30.08, Apr 1 - Apr 4$24.92, Apr 1 12:16 pm$22.60, Mar 6 - Apr 9$30.08, Apr 1 - Apr 4$22.90, Apr 4 4:37 am$22.60, Mar 6 - Apr 9$30.31, Apr 6 - Apr 12$25.49, Apr 6 7:49 pm$22.60, Mar 6 - Apr 9$30.31, Apr 6 - Apr 12$25.69, Apr 9 12:52 pm$22.60, Mar 6 - Apr 9$30.31, Apr 6 - Apr 12$25.71, Apr 12 9:44 am$25.00, Apr 12 - Apr 23$30.61, Apr 15 - Apr 20$26.01, Apr 15 7:01 am$25.00, Apr 12 - Apr 23$30.61, Apr 15 - Apr 20$26.60, Apr 17 - Apr 20$25.00, Apr 12 - Apr 23$30.91, Apr 23 4:00 am$27.62, Apr 23 4:00 am$25.00, Apr 12 - Apr 23$30.91, Apr 26 3:08 am$27.52, Apr 26 - May 1$25.00, Apr 26 - May 27$30.60, Apr 29 - May 4$27.52, Apr 26 - May 1$25.00, Apr 26 - May 27$30.60, Apr 29 - May 4$26.61, May 4 - May 5$25.00, Apr 26 - May 27$30.29, May 5 - May 10$26.61, May 4 - May 5$25.00, Apr 26 - May 27$30.29, May 5 - May 10$25.15, May 10 12:56 am$25.00, Apr 26 - May 27$29.98, May 13 - May 16$25.00, Apr 26 - May 27$22.71, May 13 5:32 am$29.98, May 13 - May 16$25.00, Apr 26 - May 27$22.24, May 16 5:35 pm$29.67, May 21 - May 31$25.67, May 21 1:54 am$25.00, Apr 26 - May 27$29.67, May 21 - May 31$25.48, May 25 3:49 am$25.00, Apr 26 - May 27$29.67, May 21 - May 31$25.36, May 27 8:52 am$25.00, Apr 26 - May 27$29.67, May 21 - May 31$25.67, May 31 11:16 pm$24.99, May 31 - Jun 5$29.37, Jun 5 - Jun 7$25.37, Jun 5 2:20 pm$24.99, May 31 - Jun 5$29.37, Jun 5 - Jun 7$27.13, Jun 7 - Jun 25$25.00, Jun 7 - Jun 10$29.07, Jun 10 - Jun 13$27.13, Jun 7 - Jun 25$25.00, Jun 7 - Jun 10$29.07, Jun 10 - Jun 13$27.13, Jun 7 - Jun 25$18.00, Jun 13 - Jun 25$28.77, Jun 17 - Jun 25$27.13, Jun 7 - Jun 25$18.00, Jun 13 - Jun 25$34.95, Jun 29 - Jul 7$28.32, Jun 29 7:14 am$24.78, Jun 29 - Jul 23$34.95, Jun 29 - Jul 7$28.31, Jul 3 - Jul 7$24.78, Jun 29 - Jul 23$33.20, Jul 13 2:06 am$27.68, Jul 13 2:06 am$24.78, Jun 29 - Jul 23$32.86, Jul 16 5:59 pm$27.88, Jul 16 - Jul 20$24.78, Jun 29 - Jul 23$31.17, Jul 20 9:07 am$27.88, Jul 16 - Jul 20$24.78, Jun 29 - Jul 23$31.01, Jul 23 10:20 pm$27.36, Jul 23 - Jul 31$24.78, Jun 29 - Jul 23$29.99, Jul 27 11:43 am$27.36, Jul 23 - Jul 31$24.50, Jul 27 11:43 am$28.49, Jul 31 2:08 am$27.36, Jul 23 - Jul 31$22.22, Jul 31 2:08 am$27.57, Aug 3 3:41 pm$27.33, Aug 3 3:41 pm$22.17, Aug 3 3:41 pm$27.33, Aug 3 3:41 pm$27.06, Aug 7 - Sep 6$21.18, Aug 7 6:53 am$27.33, Aug 3 3:41 pm$27.06, Aug 7 - Sep 6$20.80, Aug 11 3:39 am$27.33, Aug 3 3:41 pm$27.06, Aug 7 - Sep 6$17.10, Aug 14 10:02 pm$27.33, Aug 3 3:41 pm$27.06, Aug 7 - Sep 6$16.60, Aug 18 3:24 pm$27.33, Aug 3 3:41 pm$27.06, Aug 7 - Sep 6$15.75, Aug 22 9:31 am$27.33, Aug 3 3:41 pm$27.06, Aug 7 - Sep 6$15.10, Aug 26 3:50 am$27.06, Aug 7 - Sep 6$23.07, Aug 29 - Sep 2$14.20, Aug 29 10:20 pm$27.06, Aug 7 - Sep 6$23.07, Aug 29 - Sep 2$12.34, Sep 2 4:50 pm$27.06, Aug 7 - Sep 6$23.07, Aug 29 - Sep 2$10.55, Sep 6 2:35 pm$34.71, Sep 10 12:09 pm$27.06, Sep 10 - Sep 19$12.25, Sep 10 12:09 pm$34.95, Sep 12 - Oct 1$27.06, Sep 10 - Sep 19$11.90, Sep 12 2:26 am$34.95, Sep 12 - Oct 1$27.06, Sep 10 - Sep 19$24.55, Sep 15 11:48 pm$34.95, Sep 12 - Oct 1$27.06, Sep 10 - Sep 19$20.95, Sep 19 - Sep 21$34.95, Sep 12 - Oct 1$27.39, Sep 21 8:11 pm$20.95, Sep 19 - Sep 21$34.95, Sep 12 - Oct 1$23.07, Sep 25 - Sep 27$20.25, Sep 25 6:31 pm$34.95, Sep 12 - Oct 1$23.07, Sep 25 - Sep 27$19.67, Sep 27 6:05 pm$34.95, Sep 12 - Oct 1$26.87, Oct 1 6:29 pm$20.25, Oct 1 - Oct 5$33.20, Oct 5 - Oct 16$26.38, Oct 5 - Oct 16$20.25, Oct 1 - Oct 5$33.20, Oct 5 - Oct 16$26.38, Oct 5 - Oct 16$20.16, Oct 10 12:29 am$33.20, Oct 5 - Oct 16$26.38, Oct 5 - Oct 16$20.24, Oct 12 2:20 am$33.20, Oct 5 - Oct 16$26.38, Oct 5 - Oct 16$19.56, Oct 16 1:03 am$31.53, Oct 18 12:13 am$26.87, Oct 18 12:13 am$19.45, Oct 18 12:13 am$29.88, Oct 21 - Oct 29$25.29, Oct 21 - Oct 29$12.56, Oct 21 9:47 pm$29.88, Oct 21 - Oct 29$25.29, Oct 21 - Oct 29$7.75, Oct 25 5:49 pm$29.88, Oct 21 - Oct 29$25.29, Oct 21 - Oct 29$6.61, Oct 29 4:43 pm$31.53, Nov 2 - Nov 19$26.87, Nov 2 - Nov 19$3.20, Nov 2 4:04 pm$31.53, Nov 2 - Nov 19$26.87, Nov 2 - Nov 19$9.07, Nov 6 7:06 pm$31.53, Nov 2 - Nov 19$26.87, Nov 2 - Nov 19$19.61, Nov 10 9:40 pm$31.53, Nov 2 - Nov 19$26.87, Nov 2 - Nov 19$19.60, Nov 15 - Nov 19$29.95, Nov 23 - Dec 3$25.36, Nov 23 - Dec 3$19.59, Nov 23 - Nov 28$29.95, Nov 23 - Dec 3$25.36, Nov 23 - Dec 3$19.61, Dec 3 - Dec 8$28.45, Dec 8 - Dec 26$27.18, Dec 8 5:03 am$19.61, Dec 3 - Dec 8$28.45, Dec 8 - Dec 26$20.00, Dec 10 - Apr 8$18.76, Dec 10 7:31 pm$28.45, Dec 8 - Dec 26$20.00, Dec 10 - Apr 8$18.80, Dec 15 8:55 pm$28.45, Dec 8 - Dec 26$20.00, Dec 10 - Apr 8$17.91, Dec 20 6:58 pm$28.45, Dec 8 - Dec 26$20.00, Dec 10 - Apr 8$17.52, Dec 26 9:20 am$27.02, Dec 31 12:23 am$20.00, Dec 10 - Apr 8$17.63, Dec 31 12:23 am$25.66, Jan 4 - Jan 9$20.00, Dec 10 - Apr 8$16.54, Jan 4 4:54 pm$25.66, Jan 4 - Jan 9$20.00, Dec 10 - Apr 8$18.80, Jan 9 - Jan 19$25.28, Jan 14 - Feb 8$20.00, Dec 10 - Apr 8$18.80, Jan 9 - Jan 19$25.28, Jan 14 - Feb 8$20.00, Dec 10 - Apr 8$17.69, Jan 24 - Feb 3$25.28, Jan 14 - Feb 8$20.00, Dec 10 - Apr 8$15.15, Feb 8 5:07 pm$30.49, Feb 13 11:03 pm$20.00, Dec 10 - Apr 8$16.65, Feb 13 11:03 pm$30.22, Feb 19 - Feb 24$20.00, Dec 10 - Apr 8$17.70, Feb 19 - Feb 24$32.71, Mar 5 8:22 am$20.00, Dec 10 - Apr 8$17.66, Mar 5 8:22 am$26.41, Mar 16 - Mar 28$20.00, Dec 10 - Apr 8$17.65, Mar 16 9:42 pm$26.41, Mar 16 - Mar 28$20.00, Dec 10 - Apr 8$17.52, Mar 28 9:25 amOOS $26.41, Apr 8 7:14 pm$20.00, Dec 10 - Apr 8$17.46, Apr 8 7:14 pm 52,635963,850 1,171,875 781,250 390,625 Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr Jun 2015 2016

Price Details

New

Latest $26.41 14 hrs ago
Highest $34.95 Sep 12, '15
Lowest $25.28 Jan 14, '16
Average $26.41 (30d avg)
$27.79 (90d avg)
$28.75 (180d avg)
$29.70 (365d avg)
$29.39 (Lifetime average)
Added May 6, 2014

3rd Party New

Latest $20.00 14 hrs ago
Highest $30.08 Jun 18, '14
Lowest $20.00 Dec 10, '15
Average $20.00 (30d avg)
$20.00 (90d avg)
$22.06 (180d avg)
$24.27 (365d avg)
$25.46 (Lifetime average)
Added May 6, 2014

3rd Party Used

Latest $17.46 14 hrs ago
Highest $34.51 Jun 17, '14
Lowest $3.20 Nov 2, '15
Average $17.59 (30d avg)
$17.63 (90d avg)
$17.02 (180d avg)
$19.32 (365d avg)
$19.81 (Lifetime average)
Added May 6, 2014

Sales Rank

30 day average: 623,666
90 day average: 706,809

Product Description

Emphasizing prevention, assessment, and evaluation, this proactive guide shows how to advance learning, reduce cyber bullying, and improve school climate by helping students use technology responsibly.

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