Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Friday, September 24, 2010

Microorganisms


A teacher recently asked if I could find some Internet sites that help reinforce the 6th grade curriculum on microorganisms. First I have included the Utah Core Curriculum on microorganisms, then I have listed some of the sites I was able to find:

Core Curriculum on UEN
Science Benchmark: Microorganisms are those living things that are visible as individual organisms only with the aid of magnification. Microorganisms are components of every ecosystem on Earth. Microorganisms range in complexity from single to multicellular organisms. Most microorganisms do not cause disease and many are beneficial. Microorganisms require food, water, air, ways to dispose of waste, and an environment in which they can live. Investigation of microorganisms is accomplished by observing organisms using direct observation with the aid of magnification, observation of colonies of these organisms and their waste, and observation of microorganisms' effects on an environment and other organisms.

Standard 5 : Students will understand that microorganisms range from simple to complex, are found almost everywhere, and are both helpful and harmful.

Objective 1
: Observe and summarize information about microorganisms.
  1. Examine and illustrate size, shape, and structure of organisms found in an environment such as pond water.
  2. Compare characteristics common in observed organisms (e.g., color, movement, appendages, shape) and infer their function (e.g., green color found in organisms that are producers, appendages help movement).
  3. Research and report on a microorganism's requirements (i.e., food, water, air, waste disposal, temperature of environment, reproduction).

Objective 2 : Demonstrate the skills needed to plan and conduct an experiment to determine a microorganism's requirements in a specific environment.

  1. Formulate a question about microorganisms that can be answered with a student experiment.
  2. Develop a hypothesis for a question about microorganisms based on observations and prior knowledge.
  3. Plan and carry out an investigation on microorganisms. {Note: Teacher must examine plans and procedures to assure the safety of students; for additional information, you may wish to read microbe safety information on Utah Science Home Page.}
  4. Display results in an appropriate format (e.g., graphs, tables, diagrams).
  5. Prepare a written summary or conclusion to describe the results in terms of the hypothesis for the investigation on microorganisms.

Objective 3 : Identify positive and negative effects of microorganisms and how science has developed positive uses for some microorganisms and overcome the negative effects of others.

  1. Describe in writing how microorganisms serve as decomposers in the environment.
  2. Identify how microorganisms are used as food or in the production of food (e.g., yeast helps bread rise, fungi flavor cheese, algae are used in ice cream, bacteria are used to make cheese and yogurt).
  3. Identify helpful uses of microorganisms (e.g., clean up oil spills, purify water, digest food in digestive tract, antibiotics) and the role of science in the development of understanding that led to positive uses (i.e., Pasteur established the existence, growth, and control of bacteria; Fleming isolated and developed penicillin).
  4. Relate several diseases caused by microorganisms to the organism causing the disease (e.g., athlete's foot -fungi, streptococcus throat -bacteria, giardia -protozoa).
  5. Observe and report on microorganisms' harmful effects on food (e.g., causes fruits and vegetables to rot, destroys food bearing plants, makes milk sour).

Websites:

Tuesday, September 8, 2009

They Might Be Giants

They Might Be Giants is an alternative rock group -- I guess that's what you'd call them -- who write very interesting songs. They are probably most well known for their songs "Istanbul" and "Birdhouse In Your Soul" from their album Flood. Some of their songs are strange, some of them are funny, some of them are political, and some of them are actually very educational.

I have used They Might Be Giants songs in my science class over the years. My favorite song to use in teaching is "Why Does the Sun Shine". The lyrics begin with, "The sun is a mass of incandescent gas - a gigantic nuclear furnace - where Hydrogen is built into Helium at a temperature of millions of degrees." My 6th graders learn and perform this song every year. We have also learned "The Guitar", which uses the tune of "The Lion Sleeps Tonight" to sing about a rocket ship, just for fun. Other science songs include "Mammal", "Meet the Elements", and "Science Is Real". They have an entire collection of science songs on the album Here Comes Science which is now available on iTunes and was featured in Wired magazine.

These songs and some of the music videos that go with them are great for use in the classroom. As with everything else, be sure to preview any They Might Be Giants songs you plan to use in the classroom since some of their songs, like "Science Is Real" are controversial (it mentions the Big Bang Theory) and not all of their non-science lyrics are appropriate for students, but I highly recommend taking a look at some of their music.

Their website is www.theymightbegiants.com/