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Kids & Teens
Cobblestone American History and Current Events for Kids and Children

Cobblestone American History and Current Events for Kids and Children February 2019

COBBLESTONE is the award-winning and respected leader in the study of American history for young people. COBBLESTONE tells America’s story through a unique mix of captivating articles, lively graphics, historical photographs, primary sources, and maps. Each themed-issue examines historical events in detail making them exciting and relevant to today. A must-have for every history classroom and media center. Grades 5-9.

United States
Cricket Media, Inc.
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9 Issues

In this issue

3 min.
calling all inventors

This is an open letter to all COBBLESTONE readers. I am calling upon you to invent. Are you wondering why I’m asking you to invent in a magazine devoted to U.S. history? Think about it. The United States has contributed an amazing number of scientific discoveries and technological inventions to the world. It happened over time. At first, the nation built on ideas from Europe. In the 19th century, Americans began to think independently about science and engineering. By the 20th century, the United States was an international leader in those fields. From Benjamin Franklin’s research with electricity in the 1750s to the moon landing in 1969 and smartphones in the 21st century, U.S. invention and history have been connected. Two successful federal programs paved the way for educating the nation’s…

1 min.
creative kids and the curb-climbing wheelchair

This is a real story of a team of high school inventors. One team member observed that his town didn’t have curb cuts to allow smooth access between streets and sidewalks. That bothered him because his sister uses a wheelchair for mobility. Without curb cuts, she had difficulty getting around. The historic part of town was especially difficult for her. The invention team decided to build an attachment for wheelchairs. The work was difficult and challenging, but the students had two teachers who helped them. First, the team members researched how wheelchairs operated. They built a small model of their idea. Then they constructed a full-scale prototype. The wheelchair has attachments on both sides. Each attachment includes a ramp that extends from a telescoping arm. This useful and unique attachment received…

1 min.
a creative kid and a simple solution

When Kavita Shukla was in middle school, she visited her grandmother in India. While there, she drank tap water. Her grandmother made Kavita drink a tea with different spices including fenugreek, to prevent her from becoming sick from water-borne diseases. Upon returning home, Kavita experimented in her garage with samples of the spices and dirty pond water. A few weeks later, the pond water looked clean. Kavita noticed fuzz-covered strawberries in her refrigerator. Her “aha! moment” came when she wondered what would happen if she dipped the strawberries in the natural spice mixture. She tried it. Her spice mixture proved to be antifungal and antibacterial. In other words, it destroyed the growth of things that cause food to rot. Kavita experimented with a lot of different mixtures. Then she put her…

1 min.
get set to invent

Sketch It Get specific. Visualize what your invention will look like. Make sketches of your idea. Make lots of sketches. Create It Gather together any necessary materials. You might get ideas of helpful materials after a visit to a hardware store or a craft store. Build a prototype of your invention. Try It Test your invention. Does it work? Great! If not, don’t get discouraged. Keep in mind that failure is an important part of the inventing process. Then, see the next step. Tweak It Identify any weaknesses to your invention. If something doesn’t work, determine what you have to do (remove, replace, make smaller, make bigger, make heavier, make lighter, attach differently) to fix it. Refine your prototype to make it as good as possible. Sell It Give your invention a name. To whom do you want to…

3 min.
invention protection

Using imagination and ingenuity, Americans have turned their ideas into practical products. Sometimes an idea sparks the creation of a new and original item. Other times, a change or an improvement to one idea creates a completely new invention. Take the telephone as an example. Alexander Graham Bell is credited with being the first person to patent a practical telephone in 1876. From that invention sprang many other products. They include the telephone answering machine and the technology for caller ID. Just the telephone itself has gone through many changes. The first phones were “hard-wired” to one location. They required an operator to connect any call. Today, smartphones are portable, compact personal devices. The U.S. government offers protection for such innovations and other types of intellectual property. The U.S. Constitution states that…

1 min.
did you know?

On May 22, 1849, U.S. patent number 6,469 was issued. It was for a “new and improved manner of combining adjustable buoyant chambers with steam boats or other vessels.” What makes patent number 6,469 special? The inventor was Abraham Lincoln. He is the only president to hold a U.S. patent. Samuel Hopkins was issued the first U.S. patent on July 31, 1790. It was for improvements in “the making of pot ash and pearl ash.” Potash was used in the manufacture of fertilizer and soap. Patents started to be numbered in 1836. Prior to that, patents were listed by name and date only. On June 19, 2018, U.S. patent number 10,000,000 was issued. It was for “Coherent Ladar Using Intra-Pixel Quadrature Detection.” The patent applies to “autonomous vehicles, medical imaging…