Kangaroo Kids

Fall Jump Rope Workshop

Invited: All skill levels, kids ages 6 and up

Skills Taught: Single / Long Rope, Speed, and Double Dutch (交互花式跳绳)

Learn new skills with nationally recognized jumpers!

Jumpers must be willing to learn and have fun!

Saturday, November 9, 9:00-16:00

North Laurel Community Center

9411 Whiskey Bottom Rd • Laurel, MD 20723

Participant Fee: $55 by 10/21 ($65 after 10/21)

Judge's Clinic Fee: $25 by 10/21 ($35 after 10/21)

How to Register (register by 10/30)

Use our online registration system for all event registrations, T-shirt orders; and lunch orders. Please register and pay at http://registration. kanagrookids.org/FallWorkshop. First-time users will create a user account to register for the Fall Workshop as a participant. Please create only one user account per household. All members of a family will be part of one account.

NOTE: PLEASE REGISTER AS EARLYAS POSSILE, ASPACE IS LIMITED. 

T-shirt Order

Workshop T-shirts: $18, order by 10/18. Shirt Size (please circle during order): YS/ YM /YL/AS/ AM /AL

Jump ropes, T-shirts, shorts, tennis shoes, and water bottles will be available for sale at the event on November 9. There will be instructors helping adjust the length of your jump ropes.

Lunch Order

Subway lunch (sandwich or salad, fruit drinks and cookies): $8, order by 10/30.

Workshop Hours: 9:00-12:00 and 1:30-4:00

Lunch: 12:00-1:30

Researchers have long known that the brain links kinds of new facts, related or not, when they are learned about the same time. For the first time, scientists have recorded routes in the brain of that kind of contextual memory, the frequent change of thoughts and emotions that surrounds every piece of newly learned information.

The recordings, taken from the brains of people awaiting surgery for epilepsy（癫痫）, suggest that new memories of even abstract facts are encoded（编码） in a brain-cell order that also contains information about what else was happening during and just before the memory was formed.

In the new study, doctors from the University of Pennsylvania and Vanderbilt University took recordings from a small piece of metal implanted in the brains of 69 people with severe epilepsy. The implants allow doctors to pinpoint the location of the flash floods of brain activity that cause epileptic happening. The patients performed a simple memory task. They watched a series of nouns appear on a computer screen, and after a brief disturbance recalled as many of the words as they could, in any order. Repeated trials, with different lists of words, showed a predictable effect: The participants tended to remember the words in groups, beginning with one and recalling those that were just before or after.

This pattern, which scientists call the contiguity effect, is similar to what often happens in the card game concentration, in which players try to identify pairs in a row of cards lying face-down. Pairs overturned close are often remembered together. The way the process works, the researchers say, is something like reconstructing a night's activities after a hangover: remembering a fact (a broken table) recalls a scene (dancing), which in turn brings to mind more facts, like the other people who were there.

Sure enough, the people in the study whose neural（神经） updating signals were strongest showed the most striking pattern of remembering words in groups. "When you activate one memory, you are reactivating a little bit of what was happening around the time the memory was formed, and this process is what gives you that feeling of time travel," said Dr Michael J. Kahana.

"What would the world be if there were no hunger?" It's a question that Professor Crystal would ask her students. They found it hard to answer, she wrote later, because imagining something that isn't part of real life—and learning how to make it real—is a rare skill. It is taught to artists and engineers, but much less often to scientists. Crystal set out to change that, and helped to create a global movement. The result一an approach known as systems thinking—is now seen as essential in meeting global challenges.

Systems thinking is crucial to achieving targets such as zero hunger and better nutrition because it requires considering the way in which food is produced, processed, delivered and consumed, and looking at how those things intersect (交叉) with human health, the environment, economics and society. According to systems thinking, changing the food system—or any other network- requires three things to happen. First, researchers need to identify all the players in that system, second, they must work out how they relate to each other, and third, they need to understand and quantify the impact of those relationships on each other and on those outside the system.

Take nutrition. In the latest UN report on global food security, the number of undernourished (营养不良) people in the world has been rising, despite great advances in nutrition science. Tracking of 150 biochemicals in food has been important in revealing the relationships between calories, sugar, fat and the occurrence of common diseases. But using machine learning and artificial intelligence, some scientists propose that human diets consist of at least 26,000 biochemicals—and that the vast majority are not known. This shows that we have some way to travel before achieving the first objective of systems t hinking - which,in this example, is to identify more constituent parts of the nutrition system.

A systems approach to creating change is also built on the assumption that everyone in the system has equal power. But as some researchers find, the food system is not an equal one. A good way to redress (修正) such power imbalance is for more universities to do what Crystal did and teach students how to think using a systems approach.

More researchers, policymakers and representatives from the food industry must learn to look beyond their direct lines of responsibility and adopt a systems approach. Crystal knew that visions alone don't produce results, but concluded that "we'll never produce results that we can't envision".