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Android Apps by Developer "Castle Rock Research Corp."

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SOLARO Study Help & Exam Prep SOLARO Study Help & Exam Prep
Castle Rock Research Corp.
3.8 free 0 ×
0 Ratings
83 Ratings
Sample any of our 1500+ classes for free, no email account required! The SOLARO online study guide has Common Core English language arts, mathematics from 3rd to 12th Grade, (...)
Science 3 by Top Student Science 3 by Top Student
Castle Rock Research Corp.
1 USD 9.32
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Get the ultimate study resource for 3rd Grade science with the equivalent of over 728 pages of content aligned to all 50 U.S. state standards. It's like buying two books worth of study (...)
Science 8 by Top Student Science 8 by Top Student
Castle Rock Research Corp.
1 USD 9.45
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Get the ultimate study resource for 8th Grade science with the equivalent of over 1,060 pages of content aligned to all 50 U.S. state standards. It's like buying three books worth of study (...)
Science 7 by Top Student Science 7 by Top Student
Castle Rock Research Corp.
1 USD 9.45
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Get the ultimate study resource for 7th Grade science with the equivalent of over 1,064 pages of content aligned to all 50 U.S. state standards. It's like buying three books worth of study (...)
Science 5 by Top Student Science 5 by Top Student
Castle Rock Research Corp.
1 USD 9.45
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Get the ultimate study resource for 5th Grade science with the equivalent of over 914 pages of content aligned to all 50 U.S. state standards. It's like buying three books worth of study (...)
Math 8 Study by Top Student Math 8 Study by Top Student
Castle Rock Research Corp.
1 USD 23.53
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^_^ Get the equivalent of a 1,102 page print study guide with Math 8! Top Student has great study-focused features: ~ Topic-level practice tests that give you 20 questions to discover (...)
Math 4 by Top Student Math 4 by Top Student
Castle Rock Research Corp.
1 USD 9.45
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1 Rating
Get the ultimate study resource for 4th Grade mathematics with the equivalent of over 1,147 pages of content aligned to all 50 U.S. state standards and to the new Common Core State (...)
Math 5 by Top Student Math 5 by Top Student
Castle Rock Research Corp.
1 USD 10.06
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Get the ultimate study resource for 5th Grade mathematics with the equivalent of over 1,320 pages of content aligned to all 50 U.S. state standards and to the new Common Core State (...)
Math 6 by Top Student Math 6 by Top Student
Castle Rock Research Corp.
1 USD 9.45
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Get the ultimate study resource for 6th Grade mathematics with the equivalent of over 1,110 pages of content aligned to all 50 U.S. state standards and to the new Common Core State (...)