# Content Standards for Middle School

## Statistics and Probability

 Arranging Mean, Median, and Mode (pdf) Watch the Video At least as Many Heads (pdf) Watch the Video One Zero (pdf) Watch the Video Different Darts (pdf) Watch the Video Hats and Gloves  (pdf) Watch the Video One Versus Two Coin Tosses (pdf) Watch the Video Red and White Chips (pdf) Watch the Video Dealing with Averages (pdf) Watch the Video Counting Wins (pdf) Watch the Video Probably a Multiple of Three (pdf) Watch the Video Matching Cards (pdf) Watch the Video A Dart Probability (pdf) Watch the Video

## The Number System

 Mixed Colors (pdf) Watch the Video Three Special Factors (pdf) Watch the Video Sitting and Standing (pdf) Watch the Video Remainders of Two (pdf) Watch the Video A Weird Calculator (pdf) Watch the Video Best Value (pdf) Watch the Video Circle Moves (pdf) Watch the Video Three-Digit Reversal (pdf) Watch the Video Stacking Coins (pdf) Watch the Video Hidden Primes (pdf) Watch the Video Divisible by 13 (pdf) Watch the Video

## Expressions and Equations

 A Big Last Digit  (pdf) Watch the Video An Array of Sums (pdf) Watch the Video Row and Columns Sums (pdf) Watch the Video Counting Jelly Beans (pdf) Watch the Video Abstract Sums (pdf) Watch the Video Avid Reading (pdf) Watch the Video

## Geometry

 Circle Graphs (pdf) Watch the Video A Complicated Area (pdf) Watch the Video Circles in Squares (pdf) Watch the Video A Trapezoid Area (pdf) Watch the Video Hands of a Clock (pdf) Watch the Video Overlapping Squares (pdf) Watch the Video A Tricky Length  (pdf) Watch the Video Overlapping Circle and Square (pdf) Watch the Video A Triangle Area (pdf) Watch the Video Trapezoidal Perimeter (pdf) Watch the Video Area in a Polygon (pdf) Watch the Video A Sneaky Area (pdf) Watch the Video Lengths in a Trapezoid (pdf) Watch the Video Shaded Triangles (pdf) Watch the Video Overlapping Triangles (pdf) Watch the Video Pinwheel Area (pdf) Watch the Video A Curious Surface Area (pdf) Watch the Video Hypotenuse Please (pdf) Watch the Video Counting Non-Congruent Triangles (pdf) Watch the Video Percent Shaded (pdf) Watch the Video Consecutive Squares (pdf) Watch the Video

## Ratios and Proportional Relationships

 Two Trees (pdf) Watch the Video Area in a Polygon (pdf) Watch the Video Percent Shaded (pdf) Watch the Video

## Functions

 A Sailing Ship (pdf) Watch the Video

## Algebra

 99-digit Products (pdf) Watch the Video False Relation (pdf) Watch the Video