NANOTECHNOLOGY

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NANOTECHNOLOGY

• ELECTROSPINNING
• COTTON CANDY

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PENNSYLVANIA STANDARDS

• Select and use a strategy to solve an equation or
  inequality, explain the solution and check the
  solution for accuracy. (PA STANDARD 2.8.8E)
• Formulate expressions, equations, inequalities,
  systems of equations, systems of inequalities and
  matrices to model routine and non-routine problem
  situations. (PA STANDARD 2.8.11D)

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ESSENTIAL QUESTION

• HOW DO YOU CONVERT RATIOS TO PERCENTS?

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BEFORE (10 MINUTES)

• Students will be put into groups of 4.
• They will then be given a sheet of paper with the
  word cotton candy on it. Each group will then be
  given time to brainstorm about what they think
  about cotton candy. (5 minutes)

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DURING (30 MINUTES)

• COTTON CANDY IS MADE OF A RATIO OF SUGAR TO CORN
  SYRUP TO WATER. THEN IT IS PUT INTO A MACHINE
  AND THE COTTON CANDY IS FORMED. IN YOUR GROUPS
  YOU ARE GOING TO COME UP WITH YOUR OWN RATIOS.
  FOR EXAMPLE IF I WANTED TO USE 4 CUPS OF SUGAR TO
  2 CUPS OF CORN SYRUP TO 1 CUP OF WATER THE RATIO
  WOULD BE 421. (NOTE THIS IS NOT THE BEST
  RATIO). THEN I WANT YOU TO WRITE DOWN WHAT
  PERCENATE OF THE WHOLE SOLUTION IS THE SUGAR,
  WHAT PERCENTAGE IS THE CORN SYRUP, AND WHAT
  PERCENTAGE IS THE WATER. WHEN YOU COME UP WITH
  YOUR RATIOS AND PERCENTS TOMORROW YOU WILL
  MEASURE OUT THE INGREDIENTS AND WE WILL HAVE A
  COMPETITION OF WHOSE RATIO WORKS BEST FOR
  ELECTROSPINNING THE COTTON CANDY.

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DURING (CONTINUED)

• NOW THE STUDENTS WILL WORK IN THEIR GROUPS TO
  COMPLETE THIS TASK.

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AFTER (15 MINUTES)

• EACH GROUP THEN GETS UP AND PUTS THERE RATIO AND
  PERCENTAGE ON THE BOARD AND THEY EXPLAIN HOW THEY
  CONVERTED THEIR RATIO TO PERCENTS

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CONTINUANCE

• THE NEXT DAY STUDENTS WILL DO A LAB WHERE THE
  MAKE THEIR MIXTURES AND THEN AS A GROUP WE WILL
  ELECTROSPIN A LITTLE OF EACH ONE. THEN THEY WILL
  DECIDE WHICH MIXTURE WORKS BETTER.