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Writing Strands 1 with CD (Writing Strands Ser)
Writing Strands Level 2 (Writing Strands Ser)
Writing Strands Level 3 (Writing Strands Ser)
Writing Strands 4 (Writing Strands Ser)
Writing Strands 5 (Writing Strands Ser)
Writing Strands 6 (Writing Strands Ser)
Writing Strands 7 (Writing Strands Ser)
From their website:
Writing Strands provides high quality writing materials for elementary through high school students. The books use a step-by-step, structured format to help students master composition techniques, a process which prepares them for college-level writing.
Throughout its nine levels, the series organizes writing into four strands: creative, argumentative, report and research, and expository writing. Success with the four strands of writing is contingent on how well students understand the following foundational skills, which are taught in the lower levels of Writing Strands: creative, basic, organizational, and descriptive writing. Once the students have mastered these fundamental skills, they are ready to apply them to the abstract subject matter of the upper-level books. The books also allow students to learn the mechanics of writing: syntax, spelling, punctuation, and grammar.
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