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Problem Corner

Browse all rich problems in mathematics:
Results 1 - 10 of 595:
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Discipline(s): Mathematics
Resource Type(s): Content Supports — Activities and rich problems
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1
Too Big or Too Small?
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ORC# 3313
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 3–6
Professional Commentary: This lesson features three activities to promote number sense with large numbers, fractions, and decimal operations. In the first activity, students use proportional reasoning to determine whether $1 million in $1 bills would fit in a suitcase and how much it would weigh....
2
How Many Valentines?
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ORC# 5836
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 6–8
Professional Commentary: There are 28 students in your classroom. On Valentine's Day, every student gives a valentine to each of the other students....
3
Area and Volume in 3D -- Can't Have One Without the Other!
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ORC# 9709
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 5–8
Professional Commentary: Every 3-dimensional solid has both a volume and a surface area. Students explore the relationships between volume and surface area by constructing different solids from a given number of cubes....
4
Boxes and Cats: Statistics From the Beginning
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ORC# 9710
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 5–8
Professional Commentary: Q. Why is a box like a cat? A. Both have whiskers....
5
Can You Really Get There From Here?
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ORC# 9711
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
Professional Commentary: You are at an airport on the West coast of a long, narrow country. The country extends lengthwise to the East coast, and there are intermediate airports lined up along the way....
6
Coin Flips
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ORC# 9713
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 5–11
Professional Commentary: In this inquiry activity, students are asked to determine whether a sequence of heads and tails was obtained by flipping a coin or by just making up a sequence of H's and T's. This investigation can be a starting point for exploring basic ideas of probability....
7
Data Analysis -- Leading Digits
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ORC# 9714
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 6–12
Professional Commentary: How many of the numbers in a set of data have a leading digit of 1 and how many have a final digit of 1? An extension of the problem and a complete discussion of the underlying mathematical ideas are included....
8
Finding Areas Using Maps
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ORC# 9716
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 6–8
Professional Commentary: Students find the area of a natural feature, such as a lake or forest, using a map and the scale of the map. A discussion of the underlying mathematical ideas is included....
9
How Much Grout?
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ORC# 9717
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 6–8
Professional Commentary: Suppose you have some square ceramic tiles that you will lay for a floor. When you put them down, you will leave a little space between them to fill with grout....
10
How to Fix an Unfair Game
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ORC# 9718
Resource Information
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 7–12
Professional Commentary: Michelle and Jim wager on picking colored chips out of a bag. In the bag are two black chips and one red one....
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