Interval - Fine-Sliding Scale: Evaluating Increasing/ Decreasing Individual Order. Uniform Scale with NO REAL ZERO
  * Measuring TIME (Analog & Digital) 12 and 24 Hour Clock 
  * Measuring TIME - Practice reading the ANALOG CLOCK
  * Measuring TEMPERATURE 
  * Measuring and Recording (Histogram), Knowledge - Using Test Scores    

 Ratio - Fine-Proportional Scale: Evaluating Increasing/ Decreasing Individual Order. Uniform Scale with REAL ZERO
  * Measuring and Recording (Histogram) the Height of Students in a Class
  * Measuring Distance in Objects Using a Ruler (inches & centimeters) - I  
  * Measuring Distance in Objects Using a Ruler (inches & centimeters) - II  
  * Measuring Tool Size (English and Metric Measuring Systems)  
  * Accuracy and Precision - Using a Caliper  
  * Measuring Weight - Analog
  * Measuring Weight - Digital
  * Measuring Weight - Direct & Indirect
  * Measuring electricity (Analog and Digital, Positive and Negative)
  * Analog-to-Digital Conversion measuring electricity - Successive Aprox
  * Measuring Monetary Value Using Coins and Bills - The PLAY STORE
  * Where 360 Degrees came from
  * Probability and Random Processes - rolling a die
  * Combining Random Rrocesses - rolling TWO dice
  * The Central Limit Theorem - Where "the bell curve" comes from

FRACTIONS (less-than-whole)
  * Fractions as even breakup of a whole
  * Comparing basic fractions - circles
  * Equivalent representations (frac-dec-perc)
  * Mixing and matching fractions - strips
  * HOW MUCH IS ...... - A Fraction of a Whole Number
  * Counting fractions in Base-10 (decimal fractions)  
  * Counting fractions in Base-10 (decimal fractions) - A little faster!
  * Counting fractions in Base-2 (computers)  
  * Counting f ractions in Base-2 (computers) - A little faster!
  * Fractions in Base-60 (Babylonian)
  * View fractions in MS Excel 
  *  View add fractions with MS Excel 
  *  View add and Subtract fractions with MS Excel 

NEGATIVE (opposite effects)
  * Play add & subtract, positive & negative tokens!
  * Using batteries to see positive & negative numbers
  * Using a special Caliper, adding and subtracting positive and negative numbers to illustrate obesity
  * Using "negative weight" in a balance
  * Seeing the difference between  -(+1)  and  +(-1)?
  * Seeing the difference between  -(-1) and   +(+1)?
  * Fly the remote control plane w/positives & negs
  * The complement of a digit as its negative number
  * Subtracting using 2's complements (computers)

COMPOSITE MEASUREMENT - Ratios of two or more related quantities
  * Measuring Speed  
  * Measuring Pressure  
  * Calculating free-fall distance

DIRECT (hands-on), and INDIRECT (calculated, predicted) MEASUREMENT - Using Ratio Scales
  * Making Volume    
  * Measuring basic shapes - Perimeter and area
  * Calculating perimeter and area of a circle
  * Measuring and Calculating-Predicting Perimeter, Area, Volume, and Surface Area
              Get a  Printable Worksheet 1    Printable Worksheet 2
  * Finding the formula of volume for a sphere - using Integral Calculus
  * Finding the formula of area for a circle - using Integral Calculus
  * Calculating Parts of Right Triangles (Trigonometry) using Ratios and Proportions 
  * Predicting Height Using Proportions - The Picture of Paola and Her Dog 
  * Predicting Pancakes Using Proportions - How many to make for How Many Folks?
  * Predicting Contents in Mix Using Ratios & Proportions - How Many Spoons of Chocolate Syrup?
  * Measuring through scaled images - satellite maps 
  * Predicting Weight (Analog and Digital) Cummulative Effects, Using Linear Functions
  * Predicting Electricity (Analog and Digital, Positive and Negative) Cummulative Effects Using Linear Functions