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Free Scenario: Capture the Flag! #wcydwt

by Annie
March 25th, 2013

Capture the Flag!

The Algebra and Geometry classes at Mathland Hgh School are planning to play a game of Capture the Flag in the woods behind the school. They’ve been discussing how to fairly divide the woods into two territories.

They’ve drawn a map of the woods and added a coordinate plane. The Algebra class will put their base at (-8, 15). The Geometry class will put their base at (4, -3).

Coordinate Grid

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Free Scenario: Growing Up #wcydwt

by Annie
March 18th, 2013

Growing Up

Dad and Son

I am 3 feet tall.

My dad is 6 feet tall.

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Free Scenario: Choosing Charity #wcydwt

by Annie
March 11th, 2013

Choosing Charity

Red Cross

In the wake of the recent tsunami, a company decided to donate to a disaster relief fund. The company started by pledging a certain amount of money.

To encourage their 60 employees to make individual contributions, the company pledge to also donate an additional fixed amount for each employee who made a personal donation to the fund.

The company treasurer determined that if one-third of the employees chose to make a donation, the company’s part of the total donation would be $7000. If 50% of the employees donated, the company’s part of the total donation would be $7750.

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Free Scenario: Pooling Tips #wcydwt

by Annie
March 4th, 2013

Pooling Tips

tips

Ethan, Fran, and Gloria have summer jobs at the local Dairy Freeze. They collect their own tips and then share them equally. One week Ethan collected $25 in tips, Fran collected $48, and Gloria collected $41.

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Hey @MoMath1! We’ve Got Enneagons!

by Annie
February 27th, 2013

During the February 26th MoMath Masters Tournament, @MoMath1 tweeted, “No googling – how many sides on an enneagon?” We thought, “Hey! We know enneagons!” If you don’t, maybe this scenario from a problem we first used in 1998 will give you some hints (as well as some ideas for something you could do with one).

Extending the Enneagon

Extend the sides AB and ED of the regular enneagon ABCDEFGHI until they intersect.

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Free Scenario: Regional Ratios #wcydwt

by Annie
February 25th, 2013

Regional Ratios

A regular hexagon and an equilateral triangle have the same perimeter.

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Free Scenario: Lincoln’s Top Hat #wcydwt

by Annie
February 18th, 2013

Lincoln’s Top Hat

Lincoln's Top Hat

Did you know that there is a famous illusion associated with Lincoln’s “stove pipe” hat? The hat looks like it’s taller than it is wide, even when the height and width (including the brim) are the same. Let’s make a hat:

  1. Cut a circle with a radius of 5 1/2 inches.
  2. Cut a circle from the center of the first circle with a radius of 3 1/2 inches.

The smaller circle will form the tip of the hat, and what’s left of the larger circle will form the hat brim. If we had a rectangular sheet of paper of the right size, we could make the cylindrical part of the top hat.

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Free Scenario: Name that Shape #wcydwt

by Annie
February 11th, 2013

Name That Shape

Mia drew a shape with exactly 4 sides.

It has 4 lines of symmetry.

Shapes

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Free Scenario: The Take-Away Game #wcydwt

by Annie
February 4th, 2013

The Take-Away Game

  • Write 23 X’s on a piece of paper.
  • On your turn you can erase or take away 1, 2, or 3 of the X’s.
  • Turns alternate. You cannot skip your turn.
  • The person who erases or takes away the last X wins.

X X X X X X X X X X X X X X X X X X X X X X X

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Student-Made Free Scenario: Baseball Cards #anyqs #wcydwt

by Max
February 1st, 2013

Baseball Cards

Third grade students at Hanover Street School made this awesome video as a Free Scenario based on the Math Forum problem called “Baseball Cards.” We are so excited to share their video!

 

 

 

The students’ video is based on the Math Forum Baseball Cards Scenario [PDF]

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