IMPORTANT: Our pricing has been updated, effective August 15, 2022.
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Powders and Crystals, Second Edition

Your classroom doubles as a chemistry lab when students must identify six unknown substances that their senses tell them are very similar. First, they view the white particles with pocketscopes and differentiate between the powders and the crystals. After comparing the substances to named samples, students apply several tests to discover the chemical properties of each: the water test, vinegar test, iodine test, BTB test, and heat test. Activity sheets provide detailed instructions for conducting each analysis and recording the results. These test data help students complete the next challenges: deducing the two or three ingredients in four mystery mixtures and exploring three new unknown white particle substances. (12 Activities)

Delta Science Modules offer:

  • An easy to use hands-on approach to teach science.  Both novice and experienced teachers can successfully engage students in rich and rewarding activities. Step-by-step activity instructions; science background information and suggestions for managing materials are just a few of the features in each Teacher Guide that ensure teaching success.
  • Classroom flexibility. With 57 modules to choose from, you'll find just what you need to reinforce your science curriculum or build your own curriculum to meet your state or local framework.
  • High quality, cost-effective equipment kits. Each module's equipment kit provides 4 to 6 weeks of science instruction for 32 students. Teaching inquiry-based science is both affordable and effective.
  • A science program designed for the way you teach. Delta Science Modules consists of 57 topics covering life, earth and physical science.  Each DSM module contains an equipment kit with enough materials for 32 students to conduct 12 investigations and a comprehensive Teacher Guide with performance assessment.

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