1. SI units are derived from the Systeme Internationale system of measurement that are recognized by the scientific community around the world. This system is based On powers of 10. 0 http://microcosm.web.cern.ch/Microcosm/P10/english/welcome.html Powers of Ten. KHD1(Base) dc m ___ ___ μ

2. Measurement Tutorials 1) Length http://science.nhmccd.edu/biol/biolab/cmruler.htm Metric Ruler http://science.nhmccd.edu/biol/biolab/micro.htm Micrometer scale on microscope http://science.nhmccd.edu/biol/biolab/meter2.htm Micrometer field of view http://science.nhmccd.edu/biol/biolab/micrometer.htm Micrometer measurement exercises http://microcosm.web.cern.ch/Microcosm/P10/english/welcome.html Powers of Ten.

3. Measurement: Mass Reading a triple beam balance. http://www.wisc-online.com/objects/index_tj.asp?objID=GCH202 Reading a triple beam balance http://www.ohaus.com/input/tutorials/compact/compactentry.html Electronic scale tutorial http://w1imr.cnm.edu/apps/chemlab/centigram_balance.swf

4. Measurement: Volume http://www.wisc-online.com/objects/index_tj.asp?objID=GCH302 Reading a graduated cylinder and meniscus http://wwwn.cdc.gov/dls/ila/cd/zambia/files/Micropipettes.ppt How to use a microipipette powerpoint http://www.sfusd.k12.ca.us/programs/sf_base/protocols/sba_1_small_volumes.pdf Micropipette student worksheet http://www.tracy.k12.ca.us/thsadvbio/how%20to%20use%20a%20pipet.htm Video on dialing and loading micropipette http://www.accessexcellence.org/AE/AEPC/WWC/1993/serial.html Serial dilutions made easy

5. Measurement: Density/Specific Gravity http://www.execulink.com/~ekimmel/density_displacment.htm (Density animation by water displacement) http://www.explorelearning.com/index.cfm?method=cResource.dspVie w&ResourceID=362http://www.explorelearning.com/index.cfm?method=cResource.dspVie w&ResourceID=362 Density step by step tutorial (BEST) http://www.explorelearning.com/index.cfm?method=cResource.dspVie w&ResourceID=396http://www.explorelearning.com/index.cfm?method=cResource.dspVie w&ResourceID=396 http://www.yourgemologist.com/SpecificGravity/specificgravity.html Specific Gravity

6. Summary Tutorials http://www.explorelearning.com/index.cfm?method=cResource.dsp ResourcesForCourse&CourseID=326http://www.explorelearning.com/index.cfm?method=cResource.dsp ResourcesForCourse&CourseID=326 Explore learning animations