For 50 students. Conduct a thorough evaluation of soil with ordinary soil samples your students can dig up anywhere. We introduce simple, easy-to-follow techniques and staining procedures early on so your students can get the most out of these activities. Soon they're able to identify the type and variety of microorganisms, calculate soil fertility by a cation exchange capacity elimination, test and determine soil pH, and correlate the...
For 50 students. Conduct a thorough evaluation of soil with ordinary soil samples...
For 50 students. Conduct a thorough evaluation of soil with ordinary soil samples your students can dig up anywhere. We introduce simple, easy-to-follow techniques and...
624-6310
.This classroom favorite is an exciting introduction to the physical and chemical properties of soil. Each student completes seven units while performing individual tests with safe and easy-to-use tablets. Includes: curriculum materials, reagent tablets, and sample bags for 50 students. Grades 4 - 8.
This classroom favorite is an exciting introduction to the physical and chemical...
This classroom favorite is an exciting introduction to the physical and chemical properties of soil. Each student completes seven units while performing individual tests with...
624-7010
.Refill for 624-7010 Topsoil Tour.
Refill for 624-7010 Topsoil Tour.
Refill for 624-7010 Topsoil Tour.
624-7011
.Discover the importance of composting - even develop an eye for an earthworm - with this interesting introductory kit. You'll learn what healthy plants require in terms of soil texture, pH levels and nutrients while performing tests using non-hazardous TestTab reagent tablets. We provide instructions and materials to perform 10 tests each of pH, Nitrate, Phosphate and Potassium.
Discover the importance of composting - even develop an eye for an earthworm - with...
Discover the importance of composting - even develop an eye for an earthworm - with this interesting introductory kit. You'll learn what healthy plants require in terms of soil...
624-7020
.Kit contains enough materials for 30 students working in pairs. Test for the presence of 10 nutrients and minerals in ordinary soil samples and learn why they are essential for plant growth. Compare soil samples. This kit highlights water content, organic matter and pH, too.
Kit contains enough materials for 30 students working in pairs. Test for the presence...
Kit contains enough materials for 30 students working in pairs. Test for the presence of 10 nutrients and minerals in ordinary soil samples and learn why they are essential...
624-7120
.Kit contains enough materials for 30 students working in pairs. Have your students culture their own soil microbes to get the real scoop on life beneath the earth's surface. Your group will collect and extract different soil samples, then record the number and types of organisms found.
Kit contains enough materials for 30 students working in pairs. Have your students...
Kit contains enough materials for 30 students working in pairs. Have your students culture their own soil microbes to get the real scoop on life beneath the earth's surface....
624-7121
.