Welcome to the MSERC Blog

Here we will report on our activities and present videos, news items, and fun problems that can be used in the classroom.

Girls as Good at Math as Boys : Discovery News : Discovery Channel

Girls as Good at Math as Boys : Discovery News : Discovery Channel

Posted using ShareThis

Darwin series: Baboons benefit from strong social networks, expert says

full story @ www.udel.edu

Darwin series: Baboons benefit from strong social networks, expert says
2:07 p.m., May 6, 2009—-Monkey communication expert Robert Seyfarth began his lecture on May 5, the kick-off of the University of Delaware’s Year of Darwin celebration, with a true story, documented in 1961, about a female baboon that herded goats in an African village.
The baboon knew all of the relationships between the goats so well that at night she would carry a bleating kid from one barn directly to its mother in another barn.
“For all the centuries we’ve bred dogs, no dog has exhibited this knowledge of kids and mothers,” said Seyfarth, who is a psychology professor at the University of Pennsylvania. “The question is where does this mind come from?”

Seyfarth transported an audience of about 200 people into the fascinating world of the baboons of Botswana’s Okavanga Delta, which he and Dorothy Cheney, his research partner, fellow Penn professor, and spouse, studied from 1992 to 2008.

Today’s Problem: Fish and Chips Takeaway

Creative Commons License: Attribute  http://www.flickr.com/people/f10n4/

Creative Commons License: Attribute http://www.flickr.com/people/f10n4/

Bob’s Fishery restaurant is now serving a healthier version of its famous fish and chips.

Here is the nutritional info for each

Category Original Version Healthier Version
Calories 1575 Two-thirds less
Fat 90 grams Four-fifths less
Sodium 1850 milligrams 40% less
Carbohydrates 137.5 grams 60% less

What are the numerical values of each of the nutrients in the healthier version?

Sea Shells Used To Clean Up Heavy Metals

full story @ www.msnbc.msn.com

Technique could save millions of lives in coastal cities in developing world

By Michael Reilly

On the banks of the Saigon River in Vietnam, researchers have just completed tests on a new way to combat water pollution that could save millions of lives in coastal cities throughout the developing world.

In factories on the outskirts of Ho Chi Minh City, Stephan Kohler of the Graz University of Technology in Austria and a team of researchers have cleansed water tainted with toxic metals like cadmium, zinc, lead and iron. And they’ve done it using nothing but one of the cheapest, most abundant material around: seashells.

Kohler’s team has found that pouring metal and acid-laden water over a bed of crushed clam or mussel shells provides an easy fix. The shells are made of aragonite, a form of calcium carbonate (CACO3) that readily swaps out its calcium atoms in favor of heavy metals, locking them into a solid form. The shells are naturally basic, too — when dissolved they have a pH of 8.3.

Today’s Problem: Mystery Set

A set of five numbers have the following properties:

The mode of the set is 0 and 4.
The median of the set is 4.
The mean of the set is 4.

What are the five numbers in the set?

T Rex’s Dino Ancestors Unearthed

full story @ news.bbc.co.uk

A model of a life-size Tyrannousaurus Rex
Dinosaur fossils found in China have got scientists pretty excited as they say they’ll help them learn loads more about the ferocious Tyrannosaurus Rex.
Found near the city of Jiayuguan, the remains are from a type of tyrannosaur being called Xiongguanlong baimoensis.
The name may be a bit of a mouthful, but it’s thought the fossils could provide the missing link between the huge T Rex and its smaller ancestors.
They date from part of the Cretaceous period – about 100 million years ago.

Today’s Problem: Seychelles Flag

Seychelles Flag

Seychelles Flag

Find the area of each section of the Seychelles flag.

The flag is x inches tall by 2x inches wide. The top edge is divided into 3 equal lengths. The right edge is divided into 3 equal lengths.