Projects, Lessons, Activities (Page 178)

Diapers: What Keeps Babies and Astronauts from Springing a Leak?

STEM Activity

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When we think about diapers we usually think about babies, because most of us wore them when we were babies and now maybe our siblings or friend’s siblings wear them. But did you know that astronauts also have to wear diapers sometimes? Astronaut diapers are called Maximum Absorbency Garments (MAGs), and astronauts wear them when they have to stay in their suits for long periods of time, such as during spacewalks, or as their ships are re-entering the atmosphere. For babies and for… Read more

Digital Image Processing

Science Fair Project Idea

Scientific Method

Students who are mathematically inclined can use the student version of a program like MatLab or Mathematica to convert a digital image into numbers, then perform operations such as sharpening or special effects. This is a great way to learn about image processing algorithms. Read more

Digital Photo Contrast

Science Fair Project Idea

Scientific Method

What do you do if you take a photo and it turns out too dark or too bright? You can use your computer to fix it for you. Read more

Digital Photo Resolution

Science Fair Project Idea

Scientific Method

Do you have a favorite picture? When you have a photo that you treasure, you want it to look as good as possible. Find out how the resolution of a digital photo effects the way it looks when you print it out. How does the quality of the image relate to the resolution? Read more

Digital Photos and Dynamic Range

Science Fair Project Idea

Scientific Method

Digital cameras can be a great way to learn about photography. Most digital cameras today have LCD screens, so you get instant feedback on your photo. If you make a mistake, no problem, you just delete the picture. It's nice that you don't have to worry about the expense and bother of developing film! This project can help you learn to take better pictures. Read more

Digital Voice Analysis

Science Fair Project Idea

Scientific Method

Use sound recording and analysis software to record voices of your family members. Can you figure out ways to identify each family member by just looking at the analyzed sound patterns from their voice (e.g., spectral frequency analysis)? Develop a hypothesis about what types of sound analysis will identify an individual. Have a helper record additional test files of your family members, without telling you which file belongs to whom. Unplug your computer speakers and see if you can… Read more

Ding, Dong, Ding, Dong: Morning Bells Are Ringing

Science Fair Project Idea

Scientific Method

For centuries, beautiful bell towers, like the Leaning Tower of Pisa, have been the center of village life, announcing the time of day, the joy of weddings, and the sorrow of funerals. They were also used to call villagers to action in times of danger. Have you ever wondered, though, why people put the bells in towers? The bells are so heavy, why haul them all the way up to the top of tall towers? Why not just ring them on the ground? Putting bells up high does make for a dramatic visual… Read more

Distracted Driver: Do Distractions Affect Driving Video Game Scores?

Science Fair Project Idea

Scientific Method

Have you ever tried rubbing your stomach and patting your head at the same time? What about doing your homework or studying for your math test while watching television? It is tough to focus on a task when you are distracted doing something else, isn't it? In this science fair project, you will investigate how distractions affect your focus on a task, such as driving, by looking at how gaming scores are affected as you're talking on a cell phone or having a conversation with a friend. Read more

Divide and Conquer: Proving Pick's Theorem for Lattice Polygons

Science Fair Project Idea

Scientific Method

If you like to play Tetris, then you might like this project. You will learn something interesting about the mathematics of complex shapes as you try to prove Pick's Theorem. The strange shape below is an example of a lattice polygon, which is a polygon whose vertices lie on points in the plane that have integer coordinates. As you can see, it is a complex shape, but there is an easy way to calculate its area, by simply counting lattice points! If you count the number of lattice points on… Read more

DIY Face Mask

STEM Activity

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To slow the spread of COVID-19, the CDC recommends wearing a mask or cloth face covering—particularly in places where it is impossible to maintain social distancing (staying at least 6 feet away from others). This recommendation is for everyone age two or older (children under the age of two should not wear masks). Many instructions to make your own mask are available online. This activity will help you think through the process of designing and making a mask as an engineering problem.… Read more

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