No cellphones! 5.78 ng = 0.00000578 mg billionth, 5 0s before 558! Measure your THUMB=2cm; da=dk=10! cc=3 dimensions: l x w x h.

Student heights: data0.txt , data1.txt , data2.txt

. My mass 155 lb=70.3 kg; 71.5 inches=181 cm. ONLY 45 minutes: Powers of Ten

Bring MARKERS. length=meter; volume = cubic: l*h*w; 4/3 π * r³. µ(myoo)=micro(10^-6)!
2008, 2012, and 2016 hecto meter: Usain Bolt, Elaine Thompson, Shelly-ann Fraser 3rd; Simone Manuel.
170 lb=77 kg (1 kg=2.2 lb)

REVIEW LAST QUESTION!

On p. 2 (above Table 1.1-1) "a liter is slightly more than a quart"; a pint = half a quart = 473 ml.

On p. 7 6. Fill a large plastic drinking glass ... This amount of water in the cup is ~ equivalent to 80% of a pint -> 1/3 l.

WHY want to supersize empty calories?

TENNIS ball globe; google earth circumference: 40 M meters
quarter mile=440 yards * 36 = 15840 in. * 4 = 63360 in/mile; mega, gig, t.
Romans count at 1 using fingers, V + V = X still 1 digit. VI + IX = 15?
Unknown Hindu invented 0 500 AD, Hindu-Arabic numerals introduced 10th C.

• conversion ; length ; Review.
• US only major industrialized country not converted to metric: English barleycorn (grain of barley) = 1/3".
• Metric system: Academy of Sciences after the French Revolution (250,000 units of measurement under the monarchy). Enlightenment: science, logic, mathematics. Units: International System of Units (SI): first prototype meter was short by 0.2 millimeters: miscalculated flattening of earth due to rotation. 2 French 1792 measured the arc of a meridian from Dunkirk to Barcelona. meter=1/10 millionth distance from pole to equator through Paris.
  1983: light in vacuum 299,792,458 meters.
  Now: orange radiation from krypton-86.
• Water cohesion/adhesion: capillary action due to electrostatic (v d Waals) forces. Meniscus formed by adhesion of water to negatively charged oxygen atoms in glass; capillary -> 14 cm in .2 mm tube.
• 3 tsp (4 in Australia) = 1 table; 8 fl oz (237 ml, 250 in Australia, NZ, Canada) = 1 cup