Browsing All posts tagged under »biology«

Interactive java app: Zoom in by powers of ten down to the nanoscale

August 25, 2010 by

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Interactive java app that let's you zoom in and out from the cosmic scale down to the nanoscale. Good for practicing scientific notation and Greek prefixes. View the Milky Way at 10 million light years from the Earth. Then move through space towards the Earth in successive orders of magnitude until you reach a tall oak tree and move from the actual size of a leaf into a microscopic world that reveals leaf cell walls, the cell nucleus, chromatin, DNA and finally, into the subatomic universe of electrons and protons

Fact sheet: The Scale of things

August 24, 2010 by

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Well organized graphic showing how large and small numbers are used to describe the real world. Shows pictures of objects along side of the order of magnitude of their sizes. Good for getting a feel for how the numbers are used and for making these small and large sizes comprehensible.

Fact sheet: Orders of magnitude in lengths (Wikipedia article)

August 23, 2010 by

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Well organized tables showing how large and small numbers are used. Table showing how nanometer, millimeter, killometer, etc. relate to each other and to real physical objects. Good for getting a feel for how the numbers are used and for making these small and large sizes comprehensible.

Online simulation of Evolution: Natural Selection under Environmental Pressure (PhET, UC/Boulder)

August 16, 2010 by

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Interactive simulation of how populations change under different environmental pressures. Explore natural selection by controlling the environment and causing mutations in bunnies.

Vocabulary Biology 1 – Chapter 2

August 11, 2010 by

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Bold-faced Words for Chapter 2 Mass – A property of all matter that measures the quantity of matter present; the greater the mass, the greater the quantity of matter. Element – A substance composed of only one type of atom. Atomic Number – The number of protons in the nucleus of an atom, also equal […]

Vocabulary for Biology 1 – Chapter 1

August 11, 2010 by

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Bold-Faced Words for Chapter 1 Natural Selection – The differential contribution of offspring to the next generation by various genetic types belonging to the same population.  The mechanism of evolution proposed by Charles Darwin. Cell – membrane enclosed units. Prokaryotes – Organisms whose genetic material is not contained within a nucleus. The bacteria. Considered an […]

A Masterpiece of Nature? Yuck!

August 10, 2010 by

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It appears that the field of ugly animal studies is wide open! Assessing the publication database for the years 1994 through 2008, the researchers found 1,855 papers about chimpanzees, 1,241 on leopards and 562 about lions — but only 14 for that mammalian equivalent of the blobfish, the African manatee. via A Masterpiece of Nature? […]