STEM

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  Proteins

  $9.95 – $24.95
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  Pulleys All Around

  $8.95 – $22.95
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  Rain

  $7.95 – $17.95
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  Rainbows

  $9.95 – $24.95
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  Rats

  $9.95 – $24.95
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  Recycling

  $8.95 – $22.95
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  Redesigning Cities to Fight Climate Change

  $9.95 – $24.95
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  Reduce, Reuse, Recycle

  $9.95 – $24.95
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  Respecting Nature

  $8.95 – $22.95
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  Restoring the Great Barrier Reef

  $9.95 – $24.95
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  Restoring the Great Lakes

  $9.95 – $24.95
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  Reusable Rockets

  $11.95 – $24.95