Problem Corner

Discipline: Mathematics

Professional Commentary: Can you identify a heavy counterfeit coin from among 9 coins using only 2 weighings on a balance scale? This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving, and classroom discussion of key mathematical...

Discipline: Mathematics

Professional Commentary: How will you ever find your way back to camp if you can ask the local guide only one question and you do not even know whether the guide tells the truth or not? This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The...

Discipline: Mathematics

Professional Commentary: You need to load three pack mules so you can get all the needed supplies to a lookout tower in one trip.  This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving, and classroom discussion of...

Discipline: Mathematics

Professional Commentary: Those old magazines you have stashed in your attic might be worth something after all. This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving, and classroom discussion of key mathematical ideas....

Discipline: Mathematics

Professional Commentary: How many times does a basketball bounce before its rebound is less than two feet high? This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving, and classroom discussion of key mathematical ideas....

Discipline: Mathematics

Professional Commentary: How much in sales of solar panels does Luther have to make to earn his weekly commission? This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving, and classroom discussion of key mathematical ideas....

Discipline: Mathematics

Professional Commentary: Can you find numerical expressions that use exactly four 4's, and any arithmetic symbols you want, to equal each of the numbers 1 - 20? This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving,...

Discipline: Mathematics

Professional Commentary: How much did Sam inherit from his cousin? This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving, and classroom discussion of key mathematical ideas....

Discipline: Mathematics

Professional Commentary: Can you find two numbers whose sum is only 3 but whose sum of squares is 29? This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving, and classroom discussion of key mathematical ideas....

Discipline: Mathematics

Professional Commentary: How much is a 1958 Thunderbird bumper worth? This problem is one of Stella's Stunners, a collection of challenging and entertaining mathematical problems to intrigue students in grades 6 - 12. The Stella problems are ideal for promoting inquiry, problem solving, and classroom discussion of key mathematical ideas....