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The Topsoil Tour
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Take your students on a topsoil trip where they examine, discover and compare the physical and chemical properties of soil. Includes a complete curriculum of lecture materials, illustrated hand-outs, teacher's tips, test procedures, data sheets and games to reinforce key concepts for seven units. Students test soil for texture, pH, nitrogen, phosphorus and potassium using individually sealed reagent tablets and sample bags. Enough materials for 50 students.
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