Ohio Resource Center

# Problem Corner

Browse all rich problems in mathematics:
 --Select a Topic-- Algebra - Patterns, sequences - Commutativity, associativity, other properties - Polynomials, Expressions - Equations - - Linear - - Quadratic - - Systems of equations - Graphing, usual coordinate system - Inequalities - Functions - - Linear - - Quadratic - - Non-linear (Exponential, Logarithmic, Step, etc.) - Trigonometry (including polar coordinates) Applications Assessment Calculus, pre-calculus Discrete mathematics Geometry - Plane Figures (2-D) - Solid Figures (3-D) - Area - Surface area, volume - Points, lines, segments, angles - Symmetry - Congruence - Similarity - Circles - Conic sections - Models, construction - Non-Euclidean geometry - Transformations (translations, rotations, reflections, dilations) Measurement - Length, distance, height - Weight, mass - Time - Money - Perimeter - Units, conversion Numbers and operations - Whole numbers (counting, operations) - Equivalence, comparing, ordering - Estimation - Fractions, rational numbers - Decimals - Integers - Percents - Exponents, roots - Real numbers - Complex numbers - Vectors and matrices Problem solving Ratio and proportional relationships Reasoning and proof Probability - Simple probability - Conditional probability - Decision making Statistics - Data display - Mean, median, mode - Data analysis, interpretation --Select a Grade-- Kindergarten 1 2 3 4 5 6 7 8 9 10 11 12
 Results 231 - 240 of 596: Return to Problem Corner Discipline(s): MathematicsResource Type(s): Content Supports — Activities and rich problems
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231
False Coins 2 (9, Heavy, 2)
ORC# 14044
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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...
232
Highland Island 1 (C, P)
ORC# 14045
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 8–12
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...
233
Lookout Tower
ORC# 14046
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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...
234
Backlot Books
ORC# 14047
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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....
235
Basketball Bounces
ORC# 14048
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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....
236
Salesman's Commission
ORC# 14049
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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....
237
Four 4's: 1 - 20
ORC# 14050
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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,...
238
Alex Watt's Will (Scotland)
ORC# 14051
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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....
239
Sum, Sum of Squares
ORC# 14052
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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....
240
Jacob's Bumper
ORC# 14053
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
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....
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