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Exploring Pounds per Square Inch with Footprints

Discover the concept of pounds per square inch (PSI) by measuring the pressure your feet support using a simple hands-on activity. Follow six easy steps to estimate the area of your foot and calculate the PSI ratio. Learn how PSI is used to measure pressure in various everyday scenarios, from a forceful punch to air in bike tires. Enhance your understanding of this important unit of measurement through practical exploration.

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Exploring Pounds per Square Inch with Footprints

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  1. 2 min: Take out HW Question: Where is the Math????

  2. 2 min: Take out Loose Leaf (At the top write:) “Footprint: Pounds per Square Inch”

  3. 2 min: Take out Loose Leaf (At the top write:) “Footprint: Pounds per Square Inch” What is pounds per square inch? PSI is a unit to measure pressure- from the force of a punch to the amount of air in a bike tire.

  4. It takes at least 750 Pounds per Square Inch to break a stack of cement bricks!

  5. Today we are measuring…. Pounds per Square Inch that your Feet support HOW??

  6. STEP 1: Put your foot on the graph paper STEP 2: Trace your foot STEP 3: ESTIMATE the area STEP 4: Divide weight/area (DON’T FORGET THAT YOU HAVE TWO FEET) STEP 5: Record this Ratio STEP 6: Repeat on your Tip-Toes!

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