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  • AMSER: Applied Math and Science Education Repository
Lactic Acid Bacteria
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This on-line exercise is focused on lactic acid bacteria, a group of related bacteria that produce lactic acid as a result of carbohydrate fermentation. It includes a protocol for the enrichment of lactic acid bacteria from enriched samples (like yogurt, sauerkraut, decaying plant matter, and tooth plaque). Three parameters are measured: growth, culture diversity, and pH. The exercise also includes instructions for the isolation of some of these bacteria by using the streak-plate method.

Subject:
Life Science
Ecology
Forestry and Agriculture
Chemistry
Material Type:
Activity/Lab
Diagram/Illustration
Provider:
AMSER: Applied Math and Science Education Repository
Microbial Life (MLER) (SERC)
Science Education Resource Center (SERC) at Carleton College
Provider Set:
AMSER: Applied Math and Science Education Repository
Author:
Living in the Microbial World Workshop
Marine Biological Laboratory
Molecular Stepping Stones
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A molecular approach to biology must develop in students an understanding of molecules, their interactions and the consequences of these interactions. Biological phenomenon now more than ever rely on chemical and physical principles for molecular explanations of the phenomenon. We have selected 10 physical-chemical principles that underlie many biological processes: we call them "Molecular Stepping Stones." Below are links to entry level model-based activities for the Stepping Stones.

Subject:
Education
Life Science
Chemistry
Material Type:
Activity/Lab
Assessment
Diagram/Illustration
Interactive
Simulation
Provider:
AMSER: Applied Math and Science Education Repository
Concord Consortium
Internet Scout Project
Provider Set:
Concord Consortium Collection
Practical Algebra Lessons
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Brought to you by Elizabeth Stapel and purplemath.com, this collection of learning modules contains over 100 mathematics modules designed to teach beginning, intermediate, and advanced algebra concepts. Some algebra topics include graphic linear equations; adding, subtracting, multiplying, and dividing polynomials; and solving linear and literal equations. Intermediate algebra topics include domain and range, even and odd functions, factor theorem, and solving systems of non-linear equations. Finally, advanced algebra topics include complex fractions, complex numbers, matrix addition and subtraction, and partial fraction decomposition. This is a great reference and teaching resource for teachers and students of introductory algebra courses. This is an especially good resource for teachers looking for in-class illustrations of fundamental algebra concepts.

Subject:
Algebra
Material Type:
Lesson Plan
Provider:
AMSER: Applied Math and Science Education Repository
Provider Set:
AMSER LAR Collection
Author:
Stapel, Elizabeth