Third Grade Science Experiments (Page 179)

Worm Hunt: Isolating Soil Nematodes from Your Backyard

Science Fair Project Idea

Scientific Method

Do you know what is living in your backyard? How about at the playground, or in your compost pile? Nematodes, also called roundworms, are the most abundant animal on Earth and they might be living in any of these places. In this science project you'll isolate nematodes from several soil samples to discover the best nematode habitats. Read more

Write a Program to Analyze Text and Guess the Author

Science Fair Project Idea

Engineering Design Process

Do you think you could figure out if two different anonymous messages were written by the same person? What about telling the difference between text written by a human and something written by artificial intelligence (AI)? How about identifying the author of a historical text? Each individual author may have their own personal style, and analyzing text mathematically can help you identify that style. Can you write a computer program that takes a passage of text as input, and calculates the… Read more

Write and Read Braille

STEM Activity

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Have you ever been in an elevator and wondered what the many little dots on the buttons are for? You can also find these dots in public buildings on room number signs or on ATMs. These arrangements of dots are a special writing system for the visually impaired called braille. By feeling the dots with their fingers, people can read what is written on a sign or elevator button. Do you want to find out how to read with your fingers? This activity will show you how! Read more

X Marks the Spot: Build a Robot to Protect Your Treasures

Science Fair Project Idea

Scientific Method

You have secret treasure that you need to keep safe from thieves. How do you keep guard 24 hours a day without skipping school and the rest of your important activities? You build a guard robot and have it do the hard work! You can build a guard robot using a LEGO® MINDSTORMS® set and the instructions in this project to guide your efforts. And do not worry: your secret is safe with your robot. Read more

Yeast Busters: Stopping Fungus in its Tracks with Antifungal Medicines

Science Fair Project Idea

Scientific Method

Have you ever wondered how antibiotics and other medicines are able to stop dangerous infections? How do such medications kill microorganisms without in general harming the person the microorganisms are infecting? Because many different types of microorganisms can infect us, we have had to develop an amazing number of ways to deal with these harmful microbes. Fungal infections can be particularly dangerous, but we have developed many different antifungal medications that can usually deal with… Read more

You Say Po-tay-to and I Say Po-tah-to, but No Matter What, There's Starch in Those Taters!

Science Fair Project Idea

Scientific Method

French fries, hash browns, mashed potatoes with gravy, potato latkes, there are so many things to make with the humble potato. The potato is a tuber from the perennial plant Solanum Tuberosum of the Solanaceae family. There are actually about 5,000 varieties of potatoes, but most of them can be traced back to the original potato from southern Peru. This single ancestor originated more than 10,000 years ago. In addition to being high in vitamins and minerals, potatoes have a varying amount of… Read more

You've Got Permission to Be a Backseat Driver!

Science Fair Project Idea

Scientific Method

Do you like to tell adults where to go and how to get there? Well, here's your chance to do it in the name of science! In this science fair project, you will see what happens to your car's fuel efficiency when it takes you downtown to see a movie, up a hill for a great view, or out for a cruise on a flat country road. Read more

10 STEM Activities for COVID-19 and Virus Science

Blog Post

Use these free STEM lesson plans and activities to explore science related to viruses, pandemics, and COVID-19 with K-12 students. Science teachers have always taught health, human biology, and microbiology to K-12 students. This year, however, these topics have new urgency and real-world impact. Thanks to the COVID-19 pandemic, students are aware of viruses in new ways. But what makes COVID-19 different than the flu? How does social distancing make a… Read more

12+ Engineering Projects to Celebrate Girl Day

Blog Post

Take time this Engineers Week to encourage a girl to try an engineering project or activity! Our list of 12+ ideas will help get you started! Today is Girl Day, an exciting part of Engineers Week! Girl Day is a wonderful reminder to educators and parents around the world that talking with girls about engineering careers, introducing them to engineering role models, and engaging them with creative and hands-on engineering activities can help them see… Read more

15 Kitchen Science Projects Roundup!

Blog Post

Experiment with kitchen science with a great hands-on science project idea from Science Buddies. From molecular gastronomy to making the best grilled cheese and marshmallows, we've got suggestions for fifteen tasty kitchen-based STEM explorations for students. Hands-on Science in the Kitchen. Hands-on STEM with Science Buddies. www.sciencebuddies.org K-12 Science Projects and Activities in the Kitchen For kids interested in chemistry or in cooking and… Read more

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