Projects, Lessons, Activities (Page 90)

Designs in Nature: Investigate the Branching Structure of Trees

Lesson Plan Grade: Kindergarten-2nd

Nature is full of objects with many different shapes. Some of these shapes display obvious regularities or distinct patterns, such as stripes, waves, symmetry, or spirals. Each of these natural patterns has evolved over a very long time and serves a specific function that usually helps a plant, animal, or other organism to survive. In this lesson plan, students explore the branching pattern of trees, plants, and leaves. They will make drawings and a leaf rubbing to compare different branching… Read more

NGSS Performance Expectations:

K-2-ETS1-2. Develop a simple sketch, drawing, or physical model to illustrate how the shape of an object helps it function as needed to solve a given problem.

Detect Litter with Machine Learning

Science Fair Project Idea

Engineering Design Process

Litter is not only an eyesore but also a serious threat to wildlife and the environment. While some littering is intentional, much of it occurs accidentally–such as when trash falls from garbage trucks or strong winds scatter waste from bins. Machine learning offers a powerful solution for detecting litter, paving the way for future innovations, including autonomous robots capable of cleaning up our surroundings. Read more

Determining Iodide Content of Salt

Science Fair Project Idea

Scientific Method

Have you ever noticed that the salt you are using says it is "iodized"? Iodine is an important micronutrient, which means we need it in small quantities to be healthy. Because iodine is rare in many people's normal diets, it is added to table salt. Then when people salt their food, they are also adding this important micronutrient. In this food science project, you will use some kitchen-friendly chemistry to investigate which types of salt have iodine added (in the form of iodide) and which do… Read more

Devising an Algorithm for Solving Rubik's Cube

Science Fair Project Idea

Scientific Method

If you're the kind of person who has taken apart your Rubik's cube in order to grease the inside parts so it will move more smoothly, this could be a great project for you. We'll show you three sets of move sequences that accomplish specific rearrangements of the cube. Can you devise a way to solve the cube using only these three move sequences? Read more

Diaper Science: How Hydrogels Absorb Water

Science Fair Project Idea

Scientific Method

Many disposable diapers contain a polymer, called sodium acrylate, which is useful for absorbing water. Do background research to learn about sodium acrylate, and how it reacts with water. Make sure that you understand the terms hydrophilic, polarity, hydrogel and hydrogen bonding. Cut out the middle, padded section of a disposable diaper. Cut this into equally-sized square pieces, approximately 10-12 cm on a side. Remove some of the stuffing material so that you can staple the open… Read more

Dice Probabilities

Science Fair Project Idea

Scientific Method

You're playing Monopoly with a friend, and you've already got Park Place and you really, really want to get Boardwalk. If you're on Pacific Avenue, what are the chances you'll reach your goal? Here's an easy project that will show you how to find out. Read more

Disinfectants

Science Fair Project Idea

Scientific Method

Disinfectants are products that kill harmful bacteria that inhabit surfaces. Disinfectants can be in household and personal cleaning products. Which products work best? Compare different household cleaning products, like bleach or Lysol, to see which ones kill the most bacteria. Compare different brands of antibacterial hand soap or dish soap to see which brand is the most effective. How do hand sanitizers work? Compare rub-on hand sanitizers to see if they work better than alcohol, or compare… Read more

Do People Use Different Passwords for Different Accounts?

Science Fair Project Idea

Scientific Method

Do you ever use a password to log in to a computer, email account, or website? Do you use the same password for each one? Even if your password is very long or hard to guess, using the same password for many accounts can still be risky. If someone manages to find out your password (for example, via a phishing attack, or if you write your passwords down and someone finds the piece of paper), they could easily access many of your accounts. However, memorizing lots of different passwords can be… Read more

Do the Eyes Have It?

Science Fair Project Idea

Scientific Method

Some people have a photographic memory and can memorize anything they see almost instantly! Wouldn't that make homework easy? Other people can remember almost anything they hear. Try this experiment to see which type of memory you have. Read more

Do You Love the Taste of Food? Find Out if You Are a Supertaster!

Science Fair Project Idea

Scientific Method

Are you really picky about food? Or do you know someone who is? It might be because he or she is a supertaster! To supertasters, the flavors of foods are much stronger than to average tasters. Are you a supertaster? Find out with this tongue-based science fair project! Read more

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