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Solution
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Waste in our World - August 09
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A Visit to Your School - May 09
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Where Is The Center? - April 09
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| The Library Problem - Mar 09 |
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| Multiplication along the Silk Road - Feb 09 |
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| The Barn Quilt Problem - Dec 08 |
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Flags by the Numbers
(patterns and numbers and operations) - Nov 08 |
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The AquaDom - One Large Aquarium
(geometry and measurement) - Oct 08 |
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Measuring the "Grand" in the Grand Hotel
(problem solving and measurement) - Sep 08 |
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Touring Washington DC
(problem solving) - Aug 08 |
Solution
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Walk for the Paws
(algebraic thinking, problem solving and reasoning) - May 08 |
Solution
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Coloring Maps
(problem solving and reasoning) - Apr 08 |
Solution
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Using Your (Number) Sense of Balance
(number sense, problem solving and reasoning) - Mar 08 |
Solution |
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| Creative Arithmetic (problem solving and reasoning) - Feb 08 |
Solution |
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| Rock-Paper-Scissors (probability) - Dec 07 |
Solution |
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| How Many Triangles? (geometry, patterns, algebraic reasoning) |
Solution |
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| Height in Coins (measurement, estimation) |
Solution |
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| Stained Glass Window Designs (geometry, fractions) |
Solution |
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| From Leaks to Liters: Estimating Water Loss (measurement, data collection and analysis) |
Solution |
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| Characteristics of Shapes (geometry) |
Solution |
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| Knights in Armor (probability, ratio and proportion) |
Solution |
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| Sharing Cookies (algebraic reasoning, problem solving and reasoning) |
Solution |
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| Nine Jumping Numbers (patterns, algebraic reasoning) |
Solution |
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| The Broken Calculator (number sense, arithmetic) |
Solution |
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| Shoes for a Pen Pal (data collection and analysis) |
Solution |
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| Making Brownies (fractions, arithmetic) |
Solution |
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| Hummingbird Migration (data collection and analysis, measurement, multiplication) |
Solution |
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| Terrific Trapezoids (geometry, problem solving and reasoning) |
Solution |
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| Dicey Situation (probability, data collection and analysis) |
Solution |
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| Counting Counts! (number system) |
Solution |
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| More than a Guess (ratio and proportion) |
Solution |
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| Patterns Galore! (patterns) |
Solution |
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| Cheerio Count (data collection and analysis, estimation, multiplication) |
Solution |
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| Talking Turkey (data collection and analysis, fractions, arithmetic) |
Solution |
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| The Better Box (measurement, geometry, multiplication) |
Solution |
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| Miniature Zoo (problem solving and reasoning) |
Solution |
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| What's the Overlap? (geometry) |
Solution |
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| Candy Conundrum (measurement, problem solving and reasoning) |
Solution |
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| Risky Allowance (probability) |
Solution |
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| Measuring Up (measurement, fractions) |
Solution |
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| Make It 36 (geometry, multiplication) |
Solution |
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| A Word to the Wise (arithmetic, problem solving and reasoning) |
Solution |
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| Winning Strategy (problem solving and reasoning) |
Solution |
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| Postage Due (arithmetic, algebraic reasoning) |
Solution |
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| Pocketful of Coins (money, fractions) |
Solution |
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| Egg Dilemma (problem solving and reasoning) |
Solution |
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| Triangular Bicycle Flags (geometry, geoboards) |
Solution |
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| Just a Second (time, multiplication) |
Solution |
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| Catching Growing Night Crawlers (geometry, algebraic reasoning) |
Solution |
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| Muffin Mania (algebraic reasoning, fractions, problem solving and reasoning) |
Solution |
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| Decorative Plate Hanging (arithmetic, problem solving and reasoning) |
Solution |
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| Holiday Fun (algebraic reasoning) |
Solution |
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| Building a Box (geometry, problem solving and reasoning) |
Solution |
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| Seymour Skwares (geometry, multiplication) |
Solution |
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| Pattern-Block Quilts (geometry) |
Solution |
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| Farmer MacDonald (data collection and analysis, graphs) |
Solution |
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| Shape Search (geometry) |
Solution |
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| March Mathness (statistics and data analysis) |
Solution |
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| Picasso Masterpiece (geometry, mathematical connections--art, technology) |
Solution |
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| Perfect-Square Geometry Partners (arithmetic, problem solving and reasoning) |
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| Package Puzzle (algebraic reasoning) |
Solution |
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| The Shopping Spree (estimation, algebraic reasoning) |
Solution |
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| Fractionberry Pie (fractions) |
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| A Walk in the Park (problem solving and reasoning, geometry) |
Solution |
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| Marble Mayhem (data collection and analysis, problem solving and reasoning, arithmetic) |
Solution |
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| Bike Trike (data collection and analysis) |
Solution |
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| Average Days of Spring (arithmetic, patterns) |
Solution |
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| Have a Heart (geometry, measurement) |
Solution |
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| Measuring Hot Chocolate (fractions, problem solving and reasoning) |
Solution |
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| Great Garlands (patterns) |
Solution |
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| Football Frenzy (problem solving and reasoning, arithmetic) |
Solution |
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| Pumpkin Puzzler (estimation, arithmetic, fractions) |
Solution |
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| Turning the Tables (data collection and analysis, geometry) |
Solution |
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| Everyone's Playing Basketball (time, problem solving and reasoning) |
Solution |
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| Puzzling Prices (money, patterns) |
Solution |
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| Painting Tiles (geometry, systematic counting) |
Solution |
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| How Big Was the Cat? (measurement) |
Solution |
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| Coloring Tetras with Two Colors (systematic counting, patterns) |
Solution |
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| Tiles and Sides (geometry, data collection and analysis) |
Solution |
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| Patterns in Squares (geometry) |
Solution |
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| No Pegs Allowed (geometry--triangles, geoboards) |
Solution |
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| Nets and Polyhedra (geometry, patterns) |
Solution |
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| Three-Way Sharing (systematic counting, problem solving and reasoning) |
Solution |
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| Stair Skipping (patterns, arithmetic) |
Solution |
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| Which Graph Is Which? (graphs, data analysis) |
Solution |
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| What Can You Measure? (measurement, data collection and analysis, systematic counting) |
Solution |
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| Marbles (problem solving and reasoning) |
Solution |
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| The Mathematics of Motion (geometry, spatial sense) |
Solution |
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| Fair Share (geometry--geoboards, congruence) |
Solution |
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| The Talking Club (patterns, systematic counting) |
Solution |
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| How Many Towers? (patterns, systematic counting) |
Solution |
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| Darts, Anyone? (problem solving and reasoning, arithmetic) |
Solution |
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| Orange Game (arithmetic, exponential growth, geometry) |
Solution |
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| Counting Cubes (skip counting, division, multiplication) |
Solution |
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| What Shapes Can You Make? (geometry) |
Solution |
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| Take Two: Fair or Unfair? (probability, problem solving and reasoning) |
Solution |
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