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The classic egg drop experiment gets reinvented as a driving question for physics students to explore a real-world problem.

By Suzie Boss
July 26, 2018
When a teenager climbs atop his desk and drops an object to the floor, teacher Johnny Devine doesn’t object. Far from it—he’s as eager as the rest of the class to see what happens next.

In a split second, the student and his teammates get positive feedback for the object they have cobbled together by hand. A small parachute made of plastic and held in place with duct tape opens as planned, slowing the descent and easing the cargo to a safe landing. Students exchange quick smiles of satisfaction as they record data. Their mission isn’t accomplished yet, but today’s test run brings them one step closer to success as aspiring aerospace engineers.



To boost engagement in challenging science content, Devine has his students tackle the same problems that professional scientists and engineers wrestle with. “Right away, they know that what they are learning can be applied to an actual career,” Devine says. “Students are motivated because it’s a real task.”

From the start of Mission to Mars, students know that expert engineers from local aerospace companies will evaluate their final working models of Mars landing devices. Their models will have to reflect the students’ best thinking about how to get a payload from orbit onto the surface of the Red Planet without damaging the goods inside. While real Mars landings involve multimillion-dollar equipment, students’ launchers will carry four fragile eggs.

THE ROAD MAP

Although the project gives students considerable freedom, it unfolds through a series of carefully designed stages, each focused on specific learning goals. Having a detailed project plan “creates a roadmap,” Devine explains, “for the students to really track their progress and see how what they’re learning connects back to the guiding question: How can we successfully land a rover on Mars?”

©George Lucas Educational Foundation

Before introducing technical content, Devine wants students to visualize what space scientists actually do. By watching videos of engineers who design entry, descent, and landing systems for spacecraft, students start getting into character for the work ahead.

Devine introduces a series of hands-on activities as the project unfolds to help students put physics concepts into action. They learn about air resistance, for instance, by experimenting with parachute designs and wrestling with a real challenge: How will they slow their landers to a reasonable speed for entry into the thin Martian atmosphere?

To apply the concept of change in momentum, students design airbag systems to go on the bottom of their landers—a location aptly called the crumple zone. They experiment with bubble wrap and other materials as potential cushioners for their cargo.

As the grand finale approaches, students keep using what they learn to test, analyze, and modify their designs. “You have to repeat the equations with different trials,” one student explains. “Being able to use that math over and over again helps it stick.”

Much of the hands-on learning in this PBL classroom “might look like a traditional physics lab,” Devine acknowledges, with students learning concepts through inquiry investigations. What’s different is the teacher’s ongoing reminder “to make sure students stay in character” as systems engineers. Each lab investigation relates back to their driving question and creates more opportunities for Devine to ask probing questions and formatively assess his students’ understanding. “We do a lot of framing in and framing out after each of those lessons so students have the chance to reflect and connect it back,” the teacher explains.

EXPERT CONVERSATIONS

When it is finally time for students to launch their precious cargo off a second-story landing, engineers from local aerospace companies are standing by to assess results. How many eggs in each lander will survive the fall?

Even more important than the test data are the discussions between experts and students. One engineer, for instance, asks to see earlier versions of a team’s design and hear about the tests that led to modifications. A student named Elizabeth perks up when she hears engineers using the same technical vocabulary that she and her classmates have learned. “It was kind of a connection—this is actually a thing that goes on,” she says.

“They had really deep, meaningful conversations so that students could practice communicating their justification for their designs,” Devine says. Hearing them use academic language and apply physics concepts tells the teacher that students deeply understand the science behind their designs. “At the end of the day, that’s what I’m most concerned about,” he says.

https://youtu.be/bKc2shFqLao


 

CNN is a multi-layered neural network with a unique architecture designed to extract increasingly complex features of the data at each layer to determine the output. CNN's are well suited for perceptual tasks.

CNN is mostly used when there is an unstructured data set (e.g., images) and the practitioners need to extract information from it
For instance, if the task is to predict an image caption:

The CNN receives an image of let's say a cat, this image, in computer term, is a collection of the pixel. Generally, one layer for the greyscale picture and three layers for a color picture.
During the feature learning (i.e., hidden layers), the network will identify unique features, for instance, the tail of the cat, the ear, etc.
When the network thoroughly learned how to recognize a picture, it can provide a probability for each image it knows. The label with the highest probability will become the prediction of the network.

 Hemoglobin is an iron-rich protein in red blood cells (RBCs).   The normal hemoglobin range for men is 13.5 to 17.5 gm/dL and 12 to 15.5 gm/dL for women. It is of utmost importance to maintain hemoglobin concentration.  
What you need to know:

What functions does hemoglobin perform in our bodies?
What causes low hemoglobin? 
Symptoms of low hemoglobin 
What are the foods that can increase hemoglobin level? 
Tips to increase your hemoglobin levels

What functions does hemoglobin perform in our bodies? 
Hemoglobin is vital for carrying oxygen from the lungs to tissues and organs. It also transports carbon dioxide from the tissues back to the lungs.
What causes low hemoglobin?

Some common causes of low hemoglobin are:

Substantial blood loss
Deficiency in iron, vitamin B, and folate
Kidney disease
Hypothyroidism
Thalassemia
Lung diseases
Excessive smoking

Any type of blood loss can cause anemia, including blood loss from surgery, heavy menstrual periods, and bleeding in the gastrointestinal tract. 
Symptoms of low hemoglobin
You can detect extremely low hemoglobin levels in your system in a few ways. They include

A fast or irregular heartbeat
Fatigue
Frequent or unexplained bruising
Shortness of breath
Liver and kidney disease
Pale skin and gums
Muscle weakness
Reoccurring headaches
Dizziness
Poor appetite
Anemia in severe cases

Elevated hemoglobin levels are associated with dehydration, heart failure, and chronic lung disease. In some conditions, the bone marrow may not produce enough RBCs, leading to cancers like leukemia, lymphoma, or tumors that spread from other parts of the body into the bone marrow.
What are the foods that can improve your hemoglobin levels?

It is essential to boost your food intake to raise your hemoglobin levels. Here are some foods to increase hemoglobin levels:

Iron-rich foods: Consume iron-rich foods like fish, meat, eggs, soy products, broccoli, green leafy vegetables that include spinach, fenugreek leaves, cauliflower, green peas, cabbage, green beans, nuts and seeds, and peanut butter, to increase your hemoglobin levels.
Vitamin A: It is pertinent to consume vitamin A foods to increase hemoglobin as they absorb more iron. Vitamin A and beta-carotene can help you there. Vitamin A is found in animal food sources, such as fish and liver. Beta-carotene is found in red, yellow, and orange fruits and vegetables.
Folate: Folate is a type of Vitamin B that plays an essential part in hemoglobin production. A shortage of folate can prevent the red blood cells from maturing, leading to anemia. Some good sources of folate include beef, rice, black-eyed peas, kidney beans, lettuce, and peanuts.
Foods rich in vitamin C: A combination of iron and vitamin C can prove to be beneficial. The latter is used for better absorption of iron. Foods rich in vitamin C include oranges, lemon, strawberries, papaya, bell peppers, broccoli, and tomatoes.
Fruits: It is also perfect to have fruits like beetroot, apple, watermelon, papaya, oranges, litchis, kiwis, strawberries, grapefruit, banana, and peach, which can boost hemoglobin levels. Plus, dry fruits, like dates, can increase the number of erythrocytes, thereby increasing hemoglobin levels. They contain iron, vitamin C, vitamin B complex, and folic acid, which helps in the formation of red blood cells. Raisins are also a rich source of iron and copper necessary to form red blood cells.

Avoid iron blockers: Foods that block your body’s ability to absorb iron, such as coffee, tea, alcohol, and aerated drinks, should be avoided.
Tips to increase your hemoglobin levels
Here are some tips to keep in mind to increase your hemoglobin levels:
Switch to brown rice: As a superfood, brown rice can help prevent various diseases related to cholesterol and the gastrointestinal system. It is rich in iron, containing 0.52 milligrams of iron for every 100 grams.
Enjoy dark chocolate: With over 80% of cocoa, dark chocolate naturally improves hemoglobin levels. Plus, it is loaded with minerals, nutrients and antioxidants.
Drink nettle tea: The spice nettle has also proven to be a good source of iron and vitamin B and C. They can also play a part in increasing hemoglobin levels.
 Exercise: Take up moderate to high-intensity exercise to help your body produce more hemoglobin to meet the oxygen demands of your body. 
Stay tuned to the Activ Living Community. Keep up to date with the latest health tips and trends through expert videos, podcasts, articles, and much more in nutrition, fitness, mindfulness, and lifestyle conditions like Asthma, Blood Pressure, Cholesterol, and Diabetes.
 You may also be interested in the following blogs: 

10 Vegetarian Foods That Are Rich In Iron
Want to Add Iron Rich Foods to Add in Your Diet? Check Out These Iron Rich Foods. 

Effective Management Information System:
Essential characteristics of an effective management information system are 1. MIS is management-oriented 2. MIS is developed under the direction of management 3. MIS is an integrated system 4. common data flow 5. MIS is based upon the future needs of the business 6. MIS is composed of sub-systems 7. MIS requires flexibility 8. distributed data processing and 9. MIS is mostly computerized.
Management Information System is established in an organization to provide relevant information to the managers to operate effectively and efficiently.
1. MIS is management-oriented:
The design of MIS starts with an appraisal of the information needs of the management. The system is usually designed from top to bottom. However, this does not mean that MIS fulfills the information needs of top management only.
 
It only implies that the information needs of the top management will serve as a basis for the assessment of the information needs of lower-level managers. In every case, the system should be designed to cater to the information needs of all levels of management.
2. MIS is developed under the direction of management:
Because of the management orientation of MIS, it is imperative that the management of an organization actively directs the development and establishment of the MIS in an organization.
It is rare to find an MIS where the manager himself, or a high-level representative of his department, is not spending a good deal of time in the system design.
 

Cloud computing Intro:
Cloud computing is the delivery of different services through the Internet. These resources include tools and applications like data storage, servers, databases, networking, and software.
Cloud computing is a popular option for people and businesses for a number of reasons including cost savings, increased productivity, speed and efficiency, performance, and security.

What is Lorem Ipsum?
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.


Why do we use it?
It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).

What is Lorem Ipsum?
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.


Why do we use it?
It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).

Computer science focuses on the development and testing of software and software systems. It involves working with mathematical models, data analysis and security, algorithms, and computational theory. Computer scientists define the computational principles that are the basis of all software.