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Buy from Amazon $8.33$0.01 $10.00 $7.50 $5.00 $2.50 Dec Mar Jun Sep Dec Mar Jun Sep Dec Mar Jun 2014 2015 2016 $5.68, Sep 10 - Dec 2$6.25, Dec 5 - Dec 10$6.26, Dec 12 - Dec 14$5.68, Dec 16 - Apr 5$5.31, Apr 6 - May 3$5.68, May 3 - May 11$3.64, May 3 - Jul 16$1.68, May 4 - May 12$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$1.68, May 4 - May 12$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$1.31, May 13 - May 15$5.31, May 12 - Jun 19$3.88, May 16 5:38 am$3.64, May 3 - Jul 16$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$1.29, May 19 2:33 pm$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$1.23, May 21 10:17 pm$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$1.18, May 24 11:30 am$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$1.13, May 27 12:46 am$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$1.07, May 29 2:27 pm$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$1.03, May 31 3:14 pm$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$0.97, Jun 3 7:22 am$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$0.93, Jun 5 3:32 pm$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$0.87, Jun 8 1:08 pm$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$0.81, Jun 10 3:00 pm$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$0.75, Jun 13 12:46 am$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$0.69, Jun 16 12:31 am$5.31, May 12 - Jun 19$3.64, May 3 - Jul 16$0.64, Jun 18 6:50 am$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.59, Jun 20 2:27 pm$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.55, Jun 22 8:38 pm$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.50, Jun 25 4:41 am$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.44, Jun 28 8:06 am$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.39, Jun 30 4:35 pm$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.35, Jul 3 1:32 am$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.30, Jul 5 9:21 am$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.25, Jul 7 8:20 pm$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.20, Jul 10 7:30 am$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.15, Jul 12 1:22 pm$5.68, Jun 19 - Oct 7$3.64, May 3 - Jul 16$0.11, Jul 15 2:37 am$5.68, Jun 19 - Oct 7$3.65, Jul 17 9:52 pm$0.05, Jul 17 9:52 pm$5.68, Jun 19 - Oct 7$3.64, Jul 19 - Aug 5$0.01, Jul 20 - Jul 26$5.68, Jun 19 - Oct 7$3.64, Jul 19 - Aug 5$1.63, Jul 26 10:39 pm$5.68, Jun 19 - Oct 7$3.64, Jul 19 - Aug 5$1.36, Jul 29 7:01 pm$5.68, Jun 19 - Oct 7$3.64, Jul 19 - Aug 5$1.68, Jul 31 - Sep 5$5.68, Jun 19 - Oct 7$3.63, Aug 6 8:28 am$1.68, Jul 31 - Sep 5$5.68, Jun 19 - Oct 7$3.57, Aug 12 11:36 pm$1.68, Jul 31 - Sep 5$5.68, Jun 19 - Oct 7$3.52, Aug 20 7:53 pm$1.68, Jul 31 - Sep 5$5.68, Jun 19 - Oct 7$3.45, Sep 1 - Sep 2$1.68, Jul 31 - Sep 5$5.68, Jun 19 - Oct 7$3.40, Sep 3 - Sep 28$1.68, Jul 31 - Sep 5$5.68, Jun 19 - Oct 7$5.18, Sep 7 4:16 am$3.40, Sep 3 - Sep 28$5.68, Jun 19 - Oct 7$3.40, Sep 3 - Sep 28$1.68, Sep 8 - Sep 20$5.68, Jun 19 - Oct 7$5.18, Sep 22 - Oct 22$3.40, Sep 3 - Sep 28$5.68, Jun 19 - Oct 7$5.18, Sep 22 - Oct 22$3.39, Sep 29 - Nov 25$5.18, Sep 22 - Oct 22$4.39, Oct 8 - Oct 13$3.39, Sep 29 - Nov 25$5.68, Oct 14 - Nov 11$5.18, Sep 22 - Oct 22$3.39, Sep 29 - Nov 25$5.68, Oct 14 - Nov 11$3.39, Sep 29 - Nov 25$1.68, Oct 23 - Nov 7$5.68, Oct 14 - Nov 11$3.39, Sep 29 - Nov 25$1.59, Nov 11 1:16 am$5.62, Nov 16 - Nov 24$3.39, Sep 29 - Nov 25$1.23, Nov 16 3:28 am$5.62, Nov 16 - Nov 24$3.39, Sep 29 - Nov 25$1.03, Nov 19 6:20 am$5.62, Nov 16 - Nov 24$3.39, Sep 29 - Nov 25$1.62, Nov 22 - Nov 24$5.68, Nov 25 - Dec 14$3.40, Nov 26 - Dec 3$1.68, Nov 25 - Dec 14$5.68, Nov 25 - Dec 14$3.39, Dec 4 - Jan 8$1.68, Nov 25 - Dec 14$5.62, Dec 16 - Dec 24$3.39, Dec 4 - Jan 8$1.62, Dec 16 - Dec 22$5.62, Dec 16 - Dec 24$3.39, Dec 4 - Jan 8$1.57, Dec 24 12:11 am$5.67, Dec 25 - Jan 2$3.39, Dec 4 - Jan 8$1.40, Dec 26 4:42 pm$5.67, Dec 25 - Jan 2$3.39, Dec 4 - Jan 8$1.27, Dec 28 6:56 pm$5.67, Dec 25 - Jan 2$3.39, Dec 4 - Jan 8$1.11, Dec 30 11:26 pm$5.67, Dec 25 - Jan 2$3.39, Dec 4 - Jan 8$0.94, Jan 2 11:38 am$5.68, Jan 3 - Feb 8$3.39, Dec 4 - Jan 8$0.65, Jan 5 4:38 am$5.68, Jan 3 - Feb 8$3.39, Dec 4 - Jan 8$0.50, Jan 7 11:12 am$5.68, Jan 3 - Feb 8$3.40, Jan 9 - Jan 16$0.32, Jan 10 2:48 am$5.68, Jan 3 - Feb 8$3.40, Jan 9 - Jan 16$0.19, Jan 12 7:04 pm$5.68, Jan 3 - Feb 8$3.40, Jan 9 - Jan 16$0.06, Jan 15 4:44 am$5.68, Jan 3 - Feb 8$3.39, Jan 17 - Jan 22$0.01, Jan 16 - Jan 23$5.68, Jan 3 - Feb 8$3.40, Jan 22 - Jan 29$0.01, Jan 16 - Jan 23$7.15, Jan 27 - Jan 29$5.68, Jan 3 - Feb 8$3.40, Jan 22 - Jan 29$7.13, Feb 1 - Feb 2$5.68, Jan 3 - Feb 8$3.39, Jan 31 - Feb 14$5.68, Jan 3 - Feb 8$5.18, Feb 3 - Feb 5$3.39, Jan 31 - Feb 14$5.68, Jan 3 - Feb 8$3.39, Feb 8 - Feb 10$3.39, Jan 31 - Feb 14$6.88, Feb 9 - Apr 25$3.39, Jan 31 - Feb 14$1.64, Feb 11 1:14 pm$6.88, Feb 9 - Apr 25$3.39, Jan 31 - Feb 14$1.53, Feb 13 10:27 am$6.88, Feb 9 - Apr 25$3.29, Feb 16 6:33 am$3.29, Feb 15 - Feb 16$6.88, Feb 9 - Apr 25$3.28, Feb 17 - Mar 18$2.83, Feb 18 6:47 am$6.88, Feb 9 - Apr 25$3.28, Feb 17 - Mar 18$2.76, Feb 20 5:22 am$6.88, Feb 9 - Apr 25$3.28, Feb 17 - Mar 18$2.89, Feb 22 - Mar 18$6.88, Feb 9 - Apr 25$3.27, Mar 19 - Mar 20$2.88, Mar 19 10:41 am$6.88, Feb 9 - Apr 25$3.25, Mar 21 6:17 pm$2.82, Mar 21 6:17 pm$6.88, Feb 9 - Apr 25$3.24, Mar 24 4:24 am$2.71, Mar 24 4:24 am$6.88, Feb 9 - Apr 25$3.29, Mar 26 - Mar 28$2.61, Mar 27 5:23 pm$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$2.52, Mar 30 2:54 am$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$2.47, Apr 1 1:21 pm$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$2.40, Apr 2 10:03 pm$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$2.33, Apr 5 2:25 pm$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$2.28, Apr 8 7:08 am$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$2.21, Apr 11 2:21 am$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$2.17, Apr 12 1:26 pm$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$2.06, Apr 15 10:53 am$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$1.97, Apr 18 3:04 am$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$1.89, Apr 20 7:58 pm$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$1.81, Apr 23 2:51 pm$6.88, Feb 9 - Apr 25$3.28, Mar 30 - Apr 25$1.78, Apr 25 2:10 am$6.88, Apr 26 - May 1$3.39, Apr 26 - Jun 1$1.69, Apr 28 6:09 am$6.88, Apr 26 - May 1$3.39, Apr 26 - Jun 1$1.66, Apr 29 5:33 pm$6.25, May 2 - May 10$3.39, Apr 26 - Jun 1$1.59, May 2 1:02 pm$6.25, May 2 - May 10$3.39, Apr 26 - Jun 1$1.49, May 5 9:09 am$6.25, May 2 - May 10$3.39, Apr 26 - Jun 1$1.45, May 6 6:34 pm$6.25, May 2 - May 10$3.39, Apr 26 - Jun 1$1.37, May 10 4:15 pm$6.18, May 12 - May 19$3.39, Apr 26 - Jun 1$1.36, May 12 8:05 am$6.18, May 12 - May 19$3.39, Apr 26 - Jun 1$1.32, May 15 6:02 pm$6.18, May 12 - May 19$3.39, Apr 26 - Jun 1$1.31, May 17 4:08 pm$6.18, May 12 - May 19$3.39, Apr 26 - Jun 1$1.28, May 19 7:59 pm$6.11, May 23 - Jun 13$3.39, Apr 26 - Jun 1$1.24, May 23 10:55 pm$6.11, May 23 - Jun 13$3.39, Apr 26 - Jun 1$1.22, May 26 1:01 am$6.11, May 23 - Jun 13$3.39, Apr 26 - Jun 1$1.20, May 28 5:52 am$6.11, May 23 - Jun 13$3.39, Apr 26 - Jun 1$1.16, Jun 1 8:44 pm$6.11, May 23 - Jun 13$3.40, Jun 4 5:11 am$1.14, Jun 4 5:11 am$6.11, May 23 - Jun 13$3.39, Jun 6 - Aug 4$1.11, Jun 6 2:10 pm$6.11, May 23 - Jun 13$3.39, Jun 6 - Aug 4$1.08, Jun 8 7:52 pm$6.11, May 23 - Jun 13$3.39, Jun 6 - Aug 4$1.01, Jun 10 10:52 pm$6.11, May 23 - Jun 13$3.39, Jun 6 - Aug 4$2.12, Jun 13 12:58 am$6.04, Jun 16 - Jun 22$3.39, Jun 6 - Aug 4$2.05, Jun 16 - Jun 22$5.97, Jun 26 - Jul 24$3.39, Jun 6 - Aug 4$1.98, Jun 26 - Jul 26$5.91, Jul 26 - Aug 4$3.39, Jun 6 - Aug 4$1.98, Jun 26 - Jul 26$5.91, Jul 26 - Aug 4$3.39, Jun 6 - Aug 4$1.92, Jul 30 - Aug 4$6.95, Aug 8 - Aug 11$2.95, Aug 8 - Aug 11$2.95, Aug 8 - Aug 11$5.95, Aug 15 - Aug 30$3.38, Aug 15 - Aug 30$1.96, Aug 15 - Aug 23$5.95, Aug 15 - Aug 30$3.38, Aug 15 - Aug 30$1.95, Aug 27 12:18 am$5.95, Aug 15 - Aug 30$3.38, Aug 15 - Aug 30$1.93, Aug 30 - Sep 23$6.95, Sep 1 - Sep 3$2.95, Sep 1 - Sep 3$1.93, Aug 30 - Sep 23$5.96, Sep 7 - Sep 13$3.38, Sep 7 - Sep 13$1.93, Aug 30 - Sep 23$6.95, Sep 17 - Mar 31$2.95, Sep 17 - Oct 13$1.93, Aug 30 - Sep 23$6.95, Sep 17 - Mar 31$2.95, Sep 17 - Oct 13$1.89, Sep 27 - Oct 1$6.95, Sep 17 - Mar 31$2.95, Sep 17 - Oct 13$1.88, Oct 5 2:58 am$6.95, Sep 17 - Mar 31$2.95, Sep 17 - Oct 13$1.86, Oct 7 - Oct 29$6.95, Sep 17 - Mar 31$2.93, Oct 15 - Oct 21$1.86, Oct 7 - Oct 29$6.95, Sep 17 - Mar 31$3.20, Oct 23 - Oct 25$1.86, Oct 7 - Oct 29$6.95, Sep 17 - Mar 31$2.94, Oct 29 - Nov 4$1.86, Oct 7 - Oct 29$6.95, Sep 17 - Mar 31$2.94, Oct 29 - Nov 4$1.80, Oct 31 4:32 am$6.95, Sep 17 - Mar 31$2.94, Oct 29 - Nov 4$1.75, Nov 2 4:38 am$6.95, Sep 17 - Mar 31$2.94, Oct 29 - Nov 4$1.70, Nov 4 6:05 am$6.95, Sep 17 - Mar 31$3.20, Nov 6 - Nov 8$1.65, Nov 8 10:37 am$6.95, Sep 17 - Mar 31$2.93, Nov 12 1:18 pm$1.62, Nov 12 1:18 pm$6.95, Sep 17 - Mar 31$2.94, Nov 14 - Nov 16$1.61, Nov 14 3:21 pm$6.95, Sep 17 - Mar 31$2.94, Nov 14 - Nov 16$1.59, Nov 16 7:34 pm$6.95, Sep 17 - Mar 31$2.92, Nov 19 - Nov 25$1.57, Nov 19 12:55 am$6.95, Sep 17 - Mar 31$2.92, Nov 19 - Nov 25$1.55, Nov 21 6:25 am$6.95, Sep 17 - Mar 31$2.92, Nov 19 - Nov 25$1.48, Nov 23 12:09 pm$6.95, Sep 17 - Mar 31$2.94, Nov 28 - Dec 2$1.29, Nov 28 2:36 am$6.95, Sep 17 - Mar 31$2.94, Nov 28 - Dec 2$1.14, Nov 30 12:22 pm$6.95, Sep 17 - Mar 31$2.94, Nov 28 - Dec 2$1.03, Dec 2 - Dec 5$6.95, Sep 17 - Mar 31$2.93, Dec 5 11:20 am$1.03, Dec 2 - Dec 5$6.95, Sep 17 - Mar 31$2.92, Dec 7 11:08 pm$1.00, Dec 7 11:08 pm$6.95, Sep 17 - Mar 31$2.91, Dec 10 1:28 pm$2.91, Dec 10 1:28 pm$6.95, Sep 17 - Mar 31$2.90, Dec 13 - Dec 15$2.90, Dec 13 - Dec 15$6.95, Sep 17 - Mar 31$3.27, Dec 20 - Dec 26$2.94, Dec 20 - Jan 4$6.95, Sep 17 - Mar 31$3.26, Dec 30 8:45 pm$2.94, Dec 20 - Jan 4$6.95, Sep 17 - Mar 31$3.25, Jan 4 1:58 pm$2.94, Dec 20 - Jan 4$6.95, Sep 17 - Mar 31$2.95, Jan 7 - Jan 16$2.50, Jan 7 1:26 am$6.95, Sep 17 - Mar 31$2.95, Jan 7 - Jan 16$2.49, Jan 9 1:02 pm$6.95, Sep 17 - Mar 31$2.95, Jan 7 - Jan 16$2.39, Jan 14 10:46 am$6.95, Sep 17 - Mar 31$2.95, Jan 7 - Jan 16$2.37, Jan 16 11:18 pm$6.95, Sep 17 - Mar 31$3.26, Jan 19 12:27 pm$2.36, Jan 19 12:27 pm$6.95, Sep 17 - Mar 31$2.95, Jan 24 - Feb 3$2.28, Jan 24 1:26 pm$6.95, Sep 17 - Mar 31$2.95, Jan 24 - Feb 3$2.94, Jan 27 3:27 am$6.95, Sep 17 - Mar 31$2.95, Jan 24 - Feb 3$2.20, Jan 29 4:52 pm$6.95, Sep 17 - Mar 31$2.95, Jan 24 - Feb 3$2.11, Feb 3 6:14 pm$6.95, Sep 17 - Mar 31$2.93, Feb 6 - Feb 8$2.05, Feb 6 8:34 am$6.95, Sep 17 - Mar 31$2.93, Feb 6 - Feb 8$1.99, Feb 8 10:44 pm$6.95, Sep 17 - Mar 31$2.91, Feb 14 5:02 am$1.89, Feb 14 5:02 am$6.95, Sep 17 - Mar 31$3.27, Feb 19 1:24 pm$1.72, Feb 19 1:24 pm$6.95, Sep 17 - Mar 31$2.95, Feb 22 8:37 am$1.69, Feb 22 8:37 am$6.95, Sep 17 - Mar 31$2.94, Feb 25 4:07 am$2.94, Feb 25 - Mar 8$6.95, Sep 17 - Mar 31$2.94, Feb 25 - Mar 8$1.74, Feb 27 9:17 pm$6.95, Sep 17 - Mar 31$2.94, Mar 2 - Mar 8$2.94, Feb 25 - Mar 8$6.95, Sep 17 - Mar 31$2.93, Mar 19 4:54 pm$2.90, Mar 19 4:54 pm$6.95, Sep 17 - Mar 31$3.28, Mar 31 3:17 am$2.91, Mar 31 3:17 am 31,843628,290 703,125 527,344 351,563 175,781 Nov Jan Mar May Jul Sep Nov Jan Mar May 2015 2016

Price Details

New

Last Seen $6.95 Mar 31, '16
Highest $6.95 Sep 17, '15
Lowest $4.39 Oct 8, '14
Average $6.95 (30d avg)
$6.95 (90d avg)
$6.95 (180d avg)
$6.63 (365d avg)
$6.09 (Lifetime average)
Added Sep 10, 2013

3rd Party New

Last Seen $3.28 Mar 31, '16
Highest $3.65 Jul 17, '14
Lowest $2.90 Mar 19, '16
Average $2.92 (30d avg)
$2.97 (90d avg)
$3.00 (180d avg)
$3.15 (365d avg)
$3.30 (Lifetime average)
Added Sep 10, 2013

3rd Party Used

Last Seen $2.91 Mar 31, '16
Highest $8.33 Jan 26, '15
Lowest $0.01 Jan 16, '15
Average $2.94 (30d avg)
$2.48 (90d avg)
$2.21 (180d avg)
$2.03 (365d avg)
$2.04 (Lifetime average)
Added Sep 10, 2013

Sales Rank

30 day average: 307,201
90 day average: 222,973

Product Description

- Clean new design for easy readability and comprehension

- Updated text presented in a lively, continuous narrative

- New center-spread sidebar feature presenting material in a fun, creative way

- Excellent age-appropriate introduction to curriculum-relevant subjects

- Important Words glossary clarifies subject-specific vocabulary

- Resources section encourages independent study

- Index makes navigating subject matter easy

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