Beginning kindergarteners are introduced to science and engineering concepts through questions such as “What is a Scientist?” and “What is an Engineer?”, and go on to compare and contrast the two. They are introduced to five steps of the engineering design process and explore these steps using the “I do, we do, you do” set of guided instruction. At the end of the project, students produce a set of purple popsicles that they design using various materials and by following a set of criteria.
Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.
By the end of this section, you will be able to:Describe the role of cells in organismsCompare and contrast light microscopy and electron microscopySummarize cell theory
This video shows scanning a Wright's stained blood smear slide with pauses to view leukocytes. The video was taken at 630X under a brightfield microscope. This video is compatible with a laboratory lesson in which students observe, categorize, and count leukocytes. More than 100 leukocytes are viewed in this video.
Use your cell phone to explore the mini-scopic world. Open your eyes to the amazing world of the ultra-tiny when you convert your cell phone into a portable, picture-taking Miniscope using a simple plastic lens from a laser pointer.
Students are introduced to the latest imaging methods used to visualize molecular structures and the method of electrophoresis that is used to identify and compare genetic code (DNA). Students should already have basic knowledge of genetics, DNA (DNA structure, nucleotide bases), proteins and enzymes. The lesson begins with a discussion to motivate the need for imaging techniques and DNA analysis, which prepares students to participate in the associated two-part activity: 1) students each choose an imaging method to research (from a provided list of molecular imaging methods), 2) they research basic information about electrophoresis.
Multi-part open educational resource which includes a video about how to operate a compound microscope, an interactive walk-through of the parts of a microscope, with detailed descriptions, and a self assessment. In addition to these wonderful instructional tools, there is a virtual lab, the "Lettuce Onion Lab" available on the same page.
This module provides a short introduction to light microscopy using two divergent yeast species, Saccharomyces cerevisiae and Schizosaccharomyces pombe, as subjects. Students examine the yeasts at different phases of their life cycle and compare them to the much smaller bacterium, E. coli. At the end of the module,students should be able to:identify the components of the light microscopestain samples with iodine to improve contrastcorrectly adjust the microscope for different specimensidentify morphological differences between yeast species in both stationary and vegetative phasesThis module is part of a semester-long introductory laboratory course, Investigations in Molecular Cell Biology, at Boston College.
As a group of organisms that are too small to see and best known for being agents of disease and death, microbes are not always appreciated for the numerous supportive and positive contributions they make to the living world. Designed to support a course in microbiology, Microbiology: A Laboratory Experience permits a glimpse into both the good and the bad in the microscopic world. The laboratory experiences are designed to engage and support student interest in microbiology as a topic, field of study, and career.
This text provides a series of laboratory exercises compatible with a one-semester undergraduate microbiology or bacteriology course with a three- or four-hour lab period that meets once or twice a week. The design of the lab manual conforms to the American Society for Microbiology curriculum guidelines and takes a ground-up approach — beginning with an introduction to biosafety and containment practices and how to work with biological hazards. From there the course moves to basic but essential microscopy skills, aseptic technique and culture methods, and builds to include more advanced lab techniques. The exercises incorporate a semester-long investigative laboratory project designed to promote the sense of discovery and encourage student engagement. The curriculum is rigorous but manageable for a single semester and incorporates best practices in biology education.
This micrograph was taken at 1000X total magnifcation on a brightfield microscope. The subject is Esherichia coli cells grown in broth culture overnight at 37 degrees Celsius. The cells were heat-fixed to a slide and stained for 1 minute with methylene blue stain prior to visualization.
This is a totally online lab teaching the use of the microscope and basic structure of the cell.
For additional information about totally online labs go to www.accesslearningsystems.com
With a simple list of necessary supplies, science teacher Mrs. Seay gets her class completely involved in the task of identifying and classifying organisms found in local pond water.