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  • Roll, Slope, and Slide: A Book About Ramps (Amazing Science: Simple Machines)
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Buy from Amazon $7.95$2.96 $6.90 $5.80 $4.70 $3.60 $2.50 Aug Nov Feb May Aug Nov Feb May Aug Nov Feb May 2013 2014 2015 2016 $7.15, Jul 9 - Nov 12$7.15, Jul 9 - Nov 12$4.50, May 3 1:06 am$4.28, May 3 1:06 am$7.15, Jul 9 - Nov 12$4.45, May 4 - May 5$4.24, May 5 5:36 pm$7.15, Jul 9 - Nov 12$3.51, May 7 - Jun 12$3.43, May 6 - Jun 12$7.15, Jul 9 - Nov 12$3.14, Jul 3 - Jul 5$3.06, Jul 3 - Jul 5$7.15, Jul 9 - Nov 12$3.06, Jul 8 - Jul 9$2.98, Jul 8 - Jul 9$7.15, Jul 9 - Nov 12$3.14, Jul 10 3:15 pm$3.06, Jul 10 3:15 pm$7.15, Jul 9 - Nov 12$3.06, Jul 13 - Jul 15$3.06, Jul 14 11:38 am$7.15, Jul 9 - Nov 12$3.04, Jul 17 - Jul 18$2.96, Jul 17 - Jul 18$7.15, Jul 9 - Nov 12$3.14, Jul 19 - Jul 21$3.06, Jul 19 - Jul 21$7.15, Jul 9 - Nov 12$3.13, Jul 23 - Jul 30$3.05, Jul 23 - Jul 30$7.15, Jul 9 - Nov 12$3.15, Jul 31 - Aug 15$3.07, Jul 31 - Aug 15$7.15, Jul 9 - Nov 12$4.37, Aug 16 - Aug 29$4.15, Aug 16 - Aug 29$7.15, Jul 9 - Nov 12$3.22, Aug 30 - Sep 13$3.14, Aug 30 - Sep 13$7.15, Jul 9 - Nov 12$3.21, Sep 15 - Sep 28$3.13, Sep 15 - Sep 28$7.15, Jul 9 - Nov 12$3.29, Sep 30 - Oct 6$3.21, Sep 30 - Oct 6$7.15, Jul 9 - Nov 12$4.32, Oct 8 6:33 am$4.04, Oct 8 6:33 am$7.15, Jul 9 - Nov 12$3.29, Oct 11 - Oct 16$3.21, Oct 11 - Oct 16$7.15, Jul 9 - Nov 12$3.53, Oct 18 - Oct 23$3.46, Oct 18 - Oct 25$7.15, Jul 9 - Nov 12$3.54, Oct 25 - Nov 12$3.46, Oct 18 - Oct 25$7.15, Jul 9 - Nov 12$3.55, Oct 28 - Nov 12$3.54, Oct 25 - Nov 12$7.07, Nov 15 - Nov 19$3.99, Nov 15 - Dec 9$3.94, Nov 15 2:50 pm$7.07, Nov 15 - Nov 19$3.99, Nov 15 - Dec 9$3.98, Nov 17 - Nov 19$7.21, Nov 20 - Nov 28$3.99, Nov 15 - Dec 9$3.97, Nov 20 - Nov 24$7.21, Nov 20 - Nov 28$3.99, Nov 15 - Dec 9$3.96, Nov 25 - Nov 26$7.35, Nov 29 - Dec 8$3.99, Nov 15 - Dec 9$3.95, Nov 27 - Nov 29$7.35, Nov 29 - Dec 8$3.99, Nov 15 - Dec 9$3.92, Dec 2 8:55 pm$7.35, Nov 29 - Dec 8$3.99, Nov 15 - Dec 9$3.89, Dec 5 - Dec 8$7.95, Dec 9 - Mar 1$3.83, Dec 11 2:41 am$3.83, Dec 11 2:41 am$7.95, Dec 9 - Mar 1$3.77, Dec 14 4:51 am$3.77, Dec 14 4:51 am$7.95, Dec 9 - Mar 1$3.90, Dec 15 4:48 am$3.87, Dec 15 4:48 am$7.95, Dec 9 - 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Dec 7$3.62, Dec 4 1:53 pm$7.95, Dec 7 - Mar 31$3.65, Dec 4 - Dec 7$3.57, Dec 7 1:12 am$7.95, Dec 7 - Mar 31$3.67, Dec 9 3:57 pm$3.55, Dec 9 3:57 pm$7.95, Dec 7 - Mar 31$3.68, Dec 12 - Dec 14$3.52, Dec 12 5:28 am$7.95, Dec 7 - Mar 31$3.68, Dec 12 - Dec 14$3.50, Dec 14 6:35 pm$7.95, Dec 7 - Mar 31$3.80, Dec 17 8:01 am$3.47, Dec 17 8:01 am$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.44, Dec 19 9:15 pm$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.42, Dec 22 9:12 am$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.70, Dec 24 7:33 pm$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.77, Dec 27 2:19 pm$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.76, Dec 30 3:55 am$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.71, Jan 3 11:03 pm$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.68, Jan 6 9:45 am$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.66, Jan 8 9:49 pm$7.95, Dec 7 - Mar 31$3.78, Dec 19 - Jan 11$3.77, Jan 11 9:30 am$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.76, Jan 13 9:30 pm$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.75, Jan 16 9:56 am$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.72, Jan 18 11:17 pm$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.70, Jan 21 - Jan 24$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.68, Jan 26 3:46 pm$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.66, Jan 29 - Jan 31$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.62, Feb 3 - Feb 8$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.61, Feb 11 - Feb 13$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.60, Feb 16 10:22 am$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.59, Feb 19 - Feb 21$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.58, Feb 24 6:27 pm$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.56, Feb 27 11:47 am$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.54, Mar 2 - Mar 7$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.58, Mar 13 10:44 pm$7.95, Dec 7 - Mar 31$4.03, Jan 13 - Mar 19$3.57, Mar 19 6:16 pm$7.95, Dec 7 - Mar 31$4.44, Mar 25 6:54 pm$3.55, Mar 25 6:54 pm$7.95, Dec 7 - Mar 31$4.24, Mar 31 4:25 pm$3.63, Mar 31 4:25 pm 17,848324,169 390,625 292,969 195,313 97,656 Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr 2015 2016

Price Details

New

Latest $7.95 26 mins ago
Highest $7.95 Dec 7, '15
Lowest $6.29 Aug 5, '15
Average $7.95 (30d avg)
$7.95 (90d avg)
$7.93 (180d avg)
$7.49 (365d avg)
$7.34 (Lifetime average)
Added May 11, 2013

3rd Party New

Latest $3.63 26 mins ago
Highest $4.28 May 3, '14
Lowest $3.04 Jul 17, '14
Average $3.56 (30d avg)
$3.63 (90d avg)
$3.67 (180d avg)
$3.63 (365d avg)
$3.58 (Lifetime average)
Added May 11, 2013

3rd Party Used

Latest $4.24 26 mins ago
Highest $4.51 Jan 14, '15
Lowest $2.96 Jul 17, '14
Average $4.11 (30d avg)
$4.02 (90d avg)
$3.89 (180d avg)
$3.82 (365d avg)
$3.70 (Lifetime average)
Added May 11, 2013

Sales Rank

30 day average: 37,734
90 day average: 53,723

Product Description

Describes the different kinds, uses, and benefits of inclined planes and ramps. Includes an activity.

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