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Learning CTR Online

Visit for science demonstrations, science labs, study skills, voice lessons, and tutoring products. Live science classes, which meet one time per week for 90 minutes start in the fall.

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Craig T. Riesen

CTR pic 9 2011.jpg


  • Biology

  • Chemistry

  • Physics

  • General Science 7-12

  • Basic Administation K-12

  • Online Instructor

30+ years Teaching Experience

  • Public Schools (26+yr)

  • Online (7+yr)

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