BIG FOOT CONTEST
  1. Put paper (1 large sheet) on the floor
  2. Trace feet of all the people in your group
  3. Using rulers, calculate the area of your foot by making the best rectangle around your foot. Don’t forget that the area for a rectangle is length x width
  4. Calculate % error in guess

RIGHT-HANDED MARBLE GRAB
  1. Grab marbles
  2. Put them in a beaker on a scale (make sure scale is reading zero with only the beaker sitting on it)
  3. Record mass of marbles
  4. Calculate % error of hypothesis

LEFT-HANDED SPONGE SQUEEZE
  1. Dip sponge in 1000mL beaker
  2. Squeeze into 600 mL beaker
  3. Pour into graduated cylinder (measure volume)
  4. Pour back into 1000mL beaker
  5. Calculate % Error

THERMODYNAMIC FINGER DIVING
  1. Go into chemical room (only 1 person)
  2. Let hot water run for about 20s
  3. Fill up 600mL beaker with 500mL of hot water
  4. Return hot water to lab station
  5. Let everyone feel the temperature
  6. Use temperature probe to get actual temperature
  7. Calculate % Error

STRAW JAVELIN
  1. Go outside and throw from tape toward our classroom
  2. Measure distance to the middle of the straw
  3. Return to lab table and calculate % error
  4. Please leave straws on the table

COTTON-BALL SHOT-PUT
  1. Get meter sticks and cotton-balls and go outside in the hallway
  2. Throw cotton-balls toward Mr. Thompson’s room
  3. Measure distance each throw goes
  4. Return to table
  5. Calculate % error
  6. Please leave cotton balls

SYNCHRONIZED LUNG TESTING
  1. Get a stopwatch
  2. Everyone in the group should start holding breath at the same time.
  3. Record time when you let go of your breath
  4. Calculate % error
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