Page 32 - Career Readiness Catalog

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SIMULATING THRESHOLD EFFECTS OF SOIL pH ON HYDRANGEA

Kit #320

Students model how hydrangea plants are affected by soil pH . The use of a simulation allows
students to determine the effect of agricultural lime on hydrangea flower color. Students use the
data obtained from the simulation to determine the positive and negative threshold doses for
“agricultural lime.” They also reflect upon the results to decide whether they have sufficient data to
recommend an optimal level of lime treatment to produce healthy plants with large, pink flowers.
Accommodates three classes, each with 6 groups of four students.
Kit No. 320 $122.50
Add a Group No. 320EL $26.35
AG LITERACY
REFILLABLE ADD A GROUP

BIOLOGY AND CHEMISTRY OF
SOIL EXPERIMENT

Kit #32
Time to play in the dirt! Students use ordinary soil samples to
conduct a thorough evaluation of soil . Simple, easy-to-follow
techniques and staining procedures are introduced early in
this series of activities . After performing a series of activities,
students are asked to draw conclusions concerning a soil’s
ability to support plant growth . All tests are performed using
either the patented Chemplate or calibrated sample tubes .
®
Accommodates four classes, each with 12 groups of two students.
Kit No. 32 $110.15
Refill Kit No. 32-RC $39.75

AG REFILLABLE

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