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Geometry of Crystal Structure

Kit #401

With this interesting and fun kit, students use transparent pre-cut shapes to construct models of the six basic crystal shapes. They insert axes at established center points on each crystal face. Using the goniometers, which are provided, students measure the length of the axes and the angles formed. They observe the geometric shape of all facets (squares, rectangles, and triangles) and record the data about each crystal form. By rotating the model on a central axis, students study the symmetry and repetition of forms. They derive their own definitions of each crystal form using the measurements and observations recorded in their data charts. This is also an excellent math-science activity! This activity expands on the four basic crystal systems introduced in Introduction to Mineral Crystals (Lab-Aids® No. 400).

Details at a Glance

  • 1 Day | 1 ~50 minute class period
  • 1 Activity
  • Accommodates unlimited classes, each with 15 groups of 2 students
  • Meets our criteria for supporting literacy
  • All materials are non-consumable

Scientific Concepts

• Construct models of basic shapes
• Measure lengths and angles
• Observe the geometric shape of facets
• Study symmetry and repetition of forms
• Derive definition from measurements

Guides & Student Sheets

Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.

  • Full downloadable Teacher Guide with background information, detailed instruction, example data and answers
  • Downloadable Student Sheets with age appropriate background information, full procedure(s), and analysis questions
  • All materials necessary to carry out the investigation
  • Safety Data Sheets

Kit Components

  • 1 Teachers Guide
  • 30 Student Worksheets and Guides
  • 15 Goniometers
  • 1 Crystal model axes set
  • 10 Cubic models
  • 10 Hexagonal models
  • 10 Monoclinic models
  • 10 Orthorhombic models
  • 10 Tetragonal models
  • 10 Triclinic models