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Buy from Amazon $6.95$1.66 $7.50 $5.00 $2.50 $0.00 Dec Mar Jun Sep Dec Mar Jun Sep Dec Mar Jun 2014 2015 2016 $6.26, Sep 10 - Jun 5$6.26, Sep 10 - Jun 5$3.16, May 3 - May 6$2.26, May 3 - May 16$6.26, Sep 10 - Jun 5$3.19, May 7 - Jun 10$2.26, May 3 - May 16$6.26, Sep 10 - Jun 5$3.19, May 7 - Jun 10$2.25, May 18 1:08 am$6.26, Sep 10 - Jun 5$3.19, May 7 - Jun 10$2.26, May 19 - May 27$6.26, Sep 10 - Jun 5$3.19, May 7 - Jun 10$2.25, May 28 12:21 am$6.26, Sep 10 - Jun 5$3.19, May 7 - Jun 10$2.26, May 29 - Jun 5$5.68, Jun 7 - Oct 6$3.19, May 7 - Jun 10$1.68, Jun 7 - Jun 11$5.68, Jun 7 - Oct 6$3.36, Jun 11 - Jun 17$3.12, Jun 12 - Jun 15$5.68, Jun 7 - Oct 6$3.36, Jun 11 - Jun 17$3.13, Jun 15 - Jun 17$5.68, Jun 7 - Oct 6$3.12, Jun 18 - Jun 19$1.69, Jun 19 - Jul 6$5.68, Jun 7 - Oct 6$3.14, Jun 21 - Jun 23$1.69, Jun 19 - Jul 6$5.68, Jun 7 - Oct 6$3.12, Jun 24 - Jun 27$1.69, Jun 19 - Jul 6$5.68, Jun 7 - Oct 6$3.14, Jun 28 - Jun 30$1.69, Jun 19 - Jul 6$5.68, Jun 7 - Oct 6$3.12, Jul 1 - Jul 2$1.69, Jun 19 - Jul 6$5.68, Jun 7 - Oct 6$3.14, Jul 3 - Jul 4$1.69, Jun 19 - Jul 6$5.68, Jun 7 - Oct 6$3.12, Jul 6 - Jul 7$1.69, Jun 19 - Jul 6$5.68, Jun 7 - Oct 6$3.36, Jul 8 - Jul 10$3.14, Jul 8 - Jul 15$5.68, Jun 7 - Oct 6$3.40, Jul 11 - Jul 15$3.14, Jul 8 - Jul 15$5.68, Jun 7 - Oct 6$3.20, Jul 16 9:59 am$3.12, Jul 16 9:59 am$5.68, Jun 7 - Oct 6$3.06, Jul 17 - Jul 22$2.98, Jul 17 - Aug 2$5.68, Jun 7 - Oct 6$3.19, Jul 23 - Jul 28$2.98, Jul 17 - Aug 2$5.68, Jun 7 - Oct 6$3.37, Jul 29 - Aug 19$2.98, Jul 17 - Aug 2$5.68, Jun 7 - Oct 6$3.37, Jul 29 - Aug 19$3.14, Aug 3 - Aug 11$5.68, Jun 7 - Oct 6$3.37, Jul 29 - Aug 19$1.68, Aug 12 7:03 am$5.68, Jun 7 - Oct 6$3.37, Jul 29 - Aug 19$3.14, Aug 14 - Aug 15$5.68, Jun 7 - Oct 6$3.51, Aug 22 - Sep 1$3.37, Aug 21 - Aug 22$5.68, Jun 7 - Oct 6$3.51, Aug 22 - Sep 1$3.40, Aug 23 - Sep 1$5.68, Jun 7 - Oct 6$3.51, Sep 3 1:51 pm$2.90, Sep 3 - Sep 8$5.68, Jun 7 - Oct 6$3.50, Sep 4 - Sep 6$2.90, Sep 3 - Sep 8$5.68, Jun 7 - Oct 6$3.51, Sep 7 - Sep 9$2.90, Sep 3 - Sep 8$5.68, Jun 7 - Oct 6$2.91, Sep 10 - Sep 14$2.83, Sep 10 - Sep 14$5.68, Jun 7 - Oct 6$2.89, Sep 15 - Sep 19$2.81, Sep 15 - Sep 25$5.68, Jun 7 - Oct 6$2.88, Sep 20 - Sep 28$2.81, Sep 15 - Sep 25$5.68, Jun 7 - Oct 6$4.33, Sep 28 1:16 pm$2.88, Sep 20 - Sep 28$5.68, Jun 7 - Oct 6$4.10, Sep 30 - Oct 1$3.35, Sep 30 4:34 pm$5.68, Jun 7 - Oct 6$4.08, Oct 2 9:41 pm$3.34, Oct 1 - Oct 10$5.68, Jun 7 - Oct 6$4.77, Oct 5 - Oct 9$3.34, Oct 1 - Oct 10$4.94, Oct 7 - Oct 12$4.77, Oct 5 - Oct 9$3.34, Oct 1 - Oct 10$4.94, Oct 7 - Oct 12$4.41, Oct 10 5:48 pm$3.34, Oct 1 - Oct 10$4.94, Oct 7 - Oct 12$2.98, Oct 11 - Oct 14$2.90, Oct 11 - Oct 14$5.68, Oct 14 - Feb 9$3.58, Oct 15 - Oct 17$3.26, Oct 15 2:52 am$5.68, Oct 14 - Feb 9$3.64, Oct 18 10:34 am$3.31, Oct 18 10:34 am$5.68, Oct 14 - Feb 9$3.83, Oct 19 - Oct 20$3.29, Oct 20 5:22 pm$5.68, Oct 14 - Feb 9$3.22, Oct 21 - Oct 28$3.14, Oct 21 - Oct 23$5.68, Oct 14 - Feb 9$3.22, Oct 28 12:27 am$3.22, Oct 21 - Oct 28$5.68, Oct 14 - Feb 9$3.45, Oct 30 - Nov 2$3.44, Oct 30 9:31 pm$5.68, Oct 14 - Feb 9$3.45, Oct 30 - Nov 2$3.43, Nov 2 12:36 pm$5.68, Oct 14 - Feb 9$4.08, Nov 5 9:05 am$3.21, Nov 5 - Nov 12$5.68, Oct 14 - Feb 9$4.00, Nov 8 11:52 pm$3.21, Nov 5 - Nov 12$5.68, Oct 14 - Feb 9$3.95, Nov 12 1:48 am$3.21, Nov 5 - Nov 12$5.68, Oct 14 - Feb 9$3.76, Nov 16 - Nov 20$3.18, Nov 16 11:53 pm$5.68, Oct 14 - Feb 9$3.76, Nov 16 - Nov 20$3.43, Nov 18 - Nov 20$5.68, Oct 14 - Feb 9$3.75, Nov 21 3:32 am$3.42, Nov 21 - Nov 25$5.68, Oct 14 - Feb 9$3.78, Nov 24 7:53 am$3.42, Nov 21 - Nov 25$5.68, Oct 14 - Feb 9$4.16, Nov 26 11:11 am$3.41, Nov 26 - Nov 27$5.68, Oct 14 - Feb 9$4.12, Nov 28 10:05 am$3.40, Nov 28 - Nov 29$5.68, Oct 14 - Feb 9$4.24, Dec 1 10:45 am$3.39, Nov 30 - Dec 1$5.68, Oct 14 - Feb 9$4.20, Dec 3 10:51 am$3.38, Dec 2 - Dec 5$5.68, Oct 14 - Feb 9$3.92, Dec 6 - Dec 11$3.37, Dec 6 10:38 am$5.68, Oct 14 - Feb 9$3.92, Dec 6 - Dec 11$3.35, Dec 8 1:09 pm$5.68, Oct 14 - Feb 9$3.92, Dec 6 - Dec 11$3.34, Dec 9 - Dec 11$5.68, Oct 14 - Feb 9$3.94, Dec 12 - Dec 17$3.32, Dec 13 - Dec 19$5.68, Oct 14 - Feb 9$4.77, Dec 19 2:59 am$3.32, Dec 13 - Dec 19$5.68, Oct 14 - Feb 9$3.94, Dec 26 - Dec 28$3.31, Dec 25 - Dec 26$5.68, Oct 14 - Feb 9$3.94, Dec 26 - Dec 28$3.29, Dec 28 - Dec 30$5.68, Oct 14 - Feb 9$3.92, Dec 30 - Dec 31$3.27, Dec 31 - Jan 1$5.68, Oct 14 - Feb 9$3.94, Jan 1 - Jan 23$3.25, Jan 1 - Jan 2$5.68, Oct 14 - Feb 9$3.94, Jan 1 - Jan 23$3.21, Jan 14 - Jan 15$5.68, Oct 14 - Feb 9$3.94, Jan 1 - Jan 23$3.19, Jan 16 - Jan 17$5.68, Oct 14 - Feb 9$3.94, Jan 1 - Jan 23$3.18, Jan 18 - Jan 22$5.68, Oct 14 - Feb 9$3.92, Jan 24 4:34 pm$3.16, Jan 24 - Jan 30$5.68, Oct 14 - Feb 9$3.94, Jan 25 - Jan 29$3.16, Jan 24 - Jan 30$5.68, Oct 14 - Feb 9$3.92, Jan 30 - Feb 6$3.15, Jan 31 - Feb 1$5.68, Oct 14 - Feb 9$3.92, Jan 30 - Feb 6$3.13, Feb 3 5:28 pm$5.68, Oct 14 - Feb 9$3.92, Jan 30 - Feb 6$3.11, Feb 5 - Feb 6$5.68, Oct 14 - Feb 9$3.92, Feb 8 - Feb 16$3.10, Feb 7 - Feb 9$6.95, Feb 10 - Apr 23$3.92, Feb 8 - Feb 16$2.94, Feb 11 - Feb 23$6.95, Feb 10 - Apr 23$3.88, Feb 17 - Mar 19$2.94, Feb 11 - Feb 23$6.95, Feb 10 - Apr 23$3.88, Feb 17 - Mar 19$2.95, Feb 24 - Mar 8$6.95, Feb 10 - Apr 23$3.88, Feb 17 - Mar 19$2.93, Mar 11 7:15 pm$6.95, Feb 10 - Apr 23$3.88, Feb 17 - Mar 19$2.91, Mar 15 7:53 am$6.95, Feb 10 - Apr 23$3.88, Feb 17 - Mar 19$2.90, Mar 16 9:37 pm$6.95, Feb 10 - Apr 23$3.88, Mar 21 - Mar 22$2.88, Mar 19 - Mar 22$6.95, Feb 10 - Apr 23$3.88, Mar 25 5:08 am$2.90, Mar 24 - Mar 26$6.95, Feb 10 - Apr 23$3.50, Mar 27 - Apr 9$2.91, Mar 27 - Mar 30$6.95, Feb 10 - Apr 23$3.50, Mar 27 - Apr 9$2.90, Mar 31 - Apr 12$6.95, Feb 10 - Apr 23$3.00, Apr 11 - Apr 16$2.90, Mar 31 - Apr 12$6.95, Feb 10 - Apr 23$3.00, Apr 11 - Apr 16$2.89, Apr 13 9:56 pm$6.95, Feb 10 - Apr 23$3.00, Apr 11 - Apr 16$2.88, Apr 15 - Apr 16$6.95, Feb 10 - Apr 23$2.87, Apr 18 - Apr 20$2.85, Apr 18 - Apr 20$6.95, Feb 10 - Apr 23$2.91, Apr 22 - Apr 23$2.50, Apr 22 - Apr 23$6.95, Apr 26 - Jul 5$2.93, Apr 28 - Apr 29$2.50, Apr 26 - May 5$6.95, Apr 26 - Jul 5$2.95, May 1 - May 5$2.50, Apr 26 - May 5$6.95, Apr 26 - Jul 5$2.94, May 6 - May 10$2.35, May 6 - May 17$6.95, Apr 26 - Jul 5$2.95, May 12 - May 30$2.35, May 6 - May 17$6.95, Apr 26 - Jul 5$2.95, May 12 - May 30$2.00, May 19 10:22 pm$6.95, Apr 26 - Jul 5$2.95, May 22 3:30 am$2.95, May 12 - May 30$6.95, Apr 26 - Jul 5$4.03, May 24 - May 28$2.95, May 12 - May 30$6.95, Apr 26 - Jul 5$2.94, May 30 - Jun 2$2.94, Jun 2 - Jun 13$6.95, Apr 26 - Jul 5$2.94, Jun 2 - Jun 13$2.93, Jun 4 - Jun 13$6.95, Apr 26 - Jul 5$2.95, Jun 16 - Jun 20$2.94, Jun 16 - Jun 20$6.95, Apr 26 - Jul 5$2.94, Jun 22 - Jun 28$2.93, Jun 22 6:08 pm$6.95, Apr 26 - Jul 5$3.48, Jun 24 - Jul 2$2.94, Jun 22 - Jun 28$6.95, Apr 26 - Jul 5$3.48, Jun 24 - Jul 2$2.93, Jun 30 6:36 pm$6.95, Apr 26 - Jul 5$3.48, Jun 24 - Jul 2$2.92, Jul 2 9:18 pm$6.95, Apr 26 - Jul 5$4.05, Jul 5 - Jul 31$2.90, Jul 5 1:22 am$6.23, Jul 7 - Jul 29$4.05, Jul 5 - Jul 31$2.89, Jul 7 5:46 am$6.23, Jul 7 - Jul 29$4.05, Jul 5 - Jul 31$2.88, Jul 10 1:49 am$6.23, Jul 7 - Jul 29$4.05, Jul 5 - Jul 31$2.86, Jul 12 - Jul 22$6.23, Jul 7 - Jul 29$4.05, Jul 5 - Jul 31$2.84, Jul 25 10:36 pm$6.02, Jul 31 - Aug 18$4.05, Jul 5 - Jul 31$2.82, Jul 31 8:26 am$6.02, Jul 31 - Aug 18$3.99, Aug 3 - Sep 2$2.79, Aug 3 10:07 pm$6.02, Jul 31 - Aug 18$3.99, Aug 3 - Sep 2$2.78, Aug 7 1:05 pm$6.02, Jul 31 - Aug 18$3.99, Aug 3 - Sep 2$2.76, Aug 9 11:15 am$6.02, Jul 31 - Aug 18$3.99, Aug 3 - Sep 2$2.77, Aug 13 5:15 am$6.02, Jul 31 - Aug 18$3.99, Aug 3 - Sep 2$2.76, Aug 16 11:10 pm$6.02, Jul 31 - Aug 18$3.99, Aug 3 - Sep 2$2.75, Aug 18 8:30 pm$6.41, Aug 20 - Aug 24$3.99, Aug 3 - Sep 2$2.74, Aug 20 - Aug 22$6.41, Aug 20 - Aug 24$3.99, Aug 3 - Sep 2$2.72, Aug 24 - Aug 26$6.95, Aug 26 - Apr 4$3.99, Aug 3 - Sep 2$2.72, Aug 24 - Aug 26$6.95, Aug 26 - Apr 4$3.99, Aug 3 - Sep 2$2.95, Aug 28 - Sep 4$6.95, Aug 26 - Apr 4$3.43, Sep 4 - Sep 6$2.95, Aug 28 - Sep 4$6.95, Aug 26 - Apr 4$3.43, Sep 4 - Sep 6$2.94, Sep 6 4:43 pm$6.95, Aug 26 - Apr 4$2.95, Sep 10 2:17 pm$2.94, Sep 10 2:17 pm$6.95, Aug 26 - Apr 4$2.94, Sep 14 - Sep 16$2.93, Sep 14 - Sep 16$6.95, Aug 26 - Apr 4$2.95, Sep 18 - Sep 24$2.94, Sep 18 - Sep 24$6.95, Aug 26 - Apr 4$2.94, Sep 26 - Oct 4$2.93, Sep 26 - Oct 4$6.95, Aug 26 - Apr 4$2.92, Oct 6 - Oct 8$2.91, Oct 6 - Oct 8$6.95, Aug 26 - Apr 4$2.90, Oct 10 3:41 pm$2.89, Oct 10 3:41 pm$6.95, Aug 26 - Apr 4$2.84, Oct 12 5:11 pm$2.83, Oct 12 5:11 pm$6.95, Aug 26 - Apr 4$2.81, Oct 14 5:26 pm$2.79, Oct 14 5:26 pm$6.95, Aug 26 - Apr 4$2.94, Oct 16 5:27 pm$2.93, Oct 16 5:27 pm$6.95, Aug 26 - Apr 4$2.88, Oct 20 3:40 pm$2.84, Oct 20 3:40 pm$6.95, Aug 26 - Apr 4$2.82, Oct 22 3:13 pm$2.81, Oct 22 3:13 pm$6.95, Aug 26 - Apr 4$2.78, Oct 24 2:16 pm$2.77, Oct 24 2:16 pm$6.95, Aug 26 - Apr 4$2.76, Oct 26 1:24 pm$2.76, Oct 26 1:24 pm$6.95, Aug 26 - Apr 4$3.48, Oct 30 1:51 pm$2.73, Oct 30 - Nov 11$6.95, Aug 26 - Apr 4$3.46, Nov 1 1:41 pm$2.73, Oct 30 - Nov 11$6.95, Aug 26 - Apr 4$3.39, Nov 3 3:00 pm$2.73, Oct 30 - Nov 11$6.95, Aug 26 - Apr 4$3.35, Nov 5 4:53 pm$2.73, Oct 30 - Nov 11$6.95, Aug 26 - Apr 4$3.26, Nov 11 - Nov 16$2.73, Oct 30 - Nov 11$6.95, Aug 26 - Apr 4$3.26, Nov 11 - Nov 16$2.72, Nov 13 11:37 pm$6.95, Aug 26 - Apr 4$3.26, Nov 11 - Nov 16$2.71, Nov 16 - Nov 20$6.95, Aug 26 - Apr 4$3.19, Nov 18 7:42 am$2.71, Nov 16 - Nov 20$6.95, Aug 26 - Apr 4$3.18, Nov 20 1:09 pm$2.71, Nov 16 - Nov 20$6.95, Aug 26 - Apr 4$2.99, Nov 22 6:52 pm$2.69, Nov 22 - Nov 29$6.95, Aug 26 - Apr 4$3.26, Nov 25 - Dec 2$2.69, Nov 22 - Nov 29$6.95, Aug 26 - Apr 4$3.26, Nov 25 - Dec 2$2.70, Dec 2 4:51 am$6.95, Aug 26 - Apr 4$3.18, Dec 4 - Dec 9$2.94, Dec 4 4:45 pm$6.95, Aug 26 - Apr 4$3.18, Dec 4 - Dec 9$2.91, Dec 7 4:24 am$6.95, Aug 26 - Apr 4$3.18, Dec 4 - Dec 9$2.90, Dec 9 6:47 pm$6.95, Aug 26 - Apr 4$3.26, Dec 12 - Dec 22$2.88, Dec 12 8:28 am$6.95, Aug 26 - Apr 4$3.26, Dec 12 - Dec 22$2.90, Dec 14 9:39 pm$6.95, Aug 26 - Apr 4$3.26, Dec 12 - Dec 22$2.89, Dec 17 11:07 am$6.95, Aug 26 - Apr 4$3.26, Dec 12 - Dec 22$2.87, Dec 20 12:16 am$6.95, Aug 26 - Apr 4$3.26, Dec 12 - Dec 22$2.85, Dec 22 12:16 pm$6.95, Aug 26 - Apr 4$3.09, Dec 24 10:43 pm$2.84, Dec 24 - Jan 4$6.95, Aug 26 - Apr 4$3.03, Dec 27 5:36 pm$2.84, Dec 24 - Jan 4$6.95, Aug 26 - Apr 4$2.95, Dec 30 7:33 am$2.84, Dec 24 - Jan 4$6.95, Aug 26 - Apr 4$3.17, Jan 4 - Jan 11$2.84, Dec 24 - Jan 4$6.95, Aug 26 - Apr 4$3.17, Jan 4 - Jan 11$2.95, Jan 9 - Jan 11$6.95, Aug 26 - Apr 4$3.04, Jan 14 12:41 am$2.88, Jan 14 - Jan 19$6.95, Aug 26 - Apr 4$3.81, Jan 19 1:47 am$2.88, Jan 14 - Jan 19$6.95, Aug 26 - Apr 4$3.26, Jan 24 3:00 am$2.84, Jan 24 3:00 am$6.95, Aug 26 - Apr 4$3.17, Jan 26 - Jan 29$2.95, Jan 26 4:42 pm$6.95, Aug 26 - Apr 4$3.17, Jan 26 - Jan 29$2.92, Jan 29 6:11 am$6.95, Aug 26 - Apr 4$4.05, Jan 31 6:40 pm$2.90, Jan 31 6:40 pm$6.95, Aug 26 - Apr 4$2.95, Feb 3 - Feb 5$2.77, Feb 3 7:39 am$6.95, Aug 26 - Apr 4$2.95, Feb 3 - Feb 5$2.61, Feb 5 10:29 pm$6.95, Aug 26 - Apr 4$4.05, Feb 8 12:14 pm$2.77, Feb 8 - Feb 13$6.95, Aug 26 - Apr 4$2.77, Feb 8 - Feb 13$2.54, Feb 13 5:55 pm$6.95, Aug 26 - Apr 4$2.75, Feb 16 - Feb 19$2.50, Feb 16 11:02 am$6.95, Aug 26 - Apr 4$2.95, Feb 19 - Feb 21$2.75, Feb 16 - Feb 19$6.95, Aug 26 - Apr 4$2.95, Feb 19 - Feb 21$2.73, Feb 21 - Feb 24$6.95, Aug 26 - Apr 4$3.18, Feb 24 6:54 pm$2.73, Feb 21 - Feb 24$6.95, Aug 26 - Apr 4$4.17, Mar 5 7:12 am$2.94, Mar 5 7:12 am$6.95, Aug 26 - Apr 4$3.04, Mar 11 - Apr 4$2.87, Mar 11 4:48 pm$6.95, Aug 26 - Apr 4$3.04, Mar 11 - Apr 4$2.84, Mar 17 - Mar 23$6.95, Aug 26 - Apr 4$3.04, Mar 11 - Apr 4$2.80, Mar 29 8:30 am$6.95, Aug 26 - Apr 4$3.04, Mar 11 - Apr 4$2.78, Apr 4 5:25 am 25,496453,539 312,500 156,250 Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr Jun 2015 2016

Price Details

New

Latest $6.95 Apr 4, '16
Highest $6.95 Aug 26, '15
Lowest $4.94 Oct 7, '14
Average $6.95 (30d avg)
$6.95 (90d avg)
$6.95 (180d avg)
$6.84 (365d avg)
$6.37 (Lifetime average)
Added Sep 10, 2013

3rd Party New

Latest $2.78 Apr 4, '16
Highest $3.92 Oct 19, '14
Lowest $1.69 Jun 19, '14
Average $2.86 (30d avg)
$2.83 (90d avg)
$2.82 (180d avg)
$2.86 (365d avg)
$2.97 (Lifetime average)
Added Sep 10, 2013

3rd Party Used

Latest $3.04 Apr 4, '16
Highest $4.77 Dec 19, '14
Lowest $1.66 Aug 13, '14
Average $3.28 (30d avg)
$3.25 (90d avg)
$3.19 (180d avg)
$3.25 (365d avg)
$3.35 (Lifetime average)
Added Sep 10, 2013

Sales Rank

30 day average: 127,015
90 day average: 139,198

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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