Chapter 2: Measurements and Calculations

Scientific Method

Steps of the Scientific Method – description of the scientific method, which
scientists use to plan and carry out scientific investigations.

http://www.sciencebuddies.org/science-fair-projects/project_scientific_method.shtml

http://www.sciencebuddies.org/science-fair-projects/project_scientific_method.shtml

(Main Idea: Observation includes making measurements and collecting data; Hypotheses are testable statements; Modeling ideas helps to form theories.)

Density

An interactive display of density and buoyancy.  Drop blocks of brick, ice, styrofoam, wood, or aluminum into the water to demonstrate the relationship between density, mass, and volume.

http://phet.colorado.edu/en/simulation/density

(Main Idea: SI base units combine to form derived units. )

Measurements and Scientific Notation

Uncertainty in Measurements – quiz yourself on how to report significant digits based on the type and accuracy of your measurements in the laboratory.

http://antoine.frostburg.edu/cgi-bin/senese/tutorials/sigfig/index.cgi

(Main Idea: Significant figures are those measured precisely, plus one estimated digit.)

Precision and Accuracy – a short interactive activity to demonstrate accuracy and precision in measurements.

http://www.learner.org/courses/learningmath/measurement/session2/part_c/accuracy.html

(Main Idea: Accuracy is different from precision. )

Scientific Notation – practice converting, adding, subtracting, multiplying, and dividing numbers in scientific notation.

http://janus.astro.umd.edu/cgi-bin/astro/scinote.pl

(Main Idea: Scientific notation is used to express very large or very small numbers. )

‘Rags to Riches’ – a Who Wants to be a Millionaire-style quiz game on scientific notation and the metric system.  Get all the answers right to ‘win’ more and more game show money!

http://www.quia.com/rr/83587.html

(Main Idea: Scientific notation is used to express very large or very small numbers. )