Elementary School Science Experiments (Page 109)

STEM Activity

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Have you ever watched an old movie, and when a character asks what time it is the other characters all look at the sky, instead of checking their watches, or their cell phones? There’s no giant digital clock in the sky, those characters are using the position of the Sun in the sky to tell time, as people have done for generations. The oldest known instruments for telling time, the sundial, allow us to track the position of the sun more accurately. Up until the early 19th century, sundials… Read more

It's Written All Over Your Face: The Science of Facial Expressions

Science Fair Project Idea

Scientific Method

Okay, now you've done it. You goofed off, didn't study for your math test, and didn't do well. Mom and Dad are not going to be happy. In fact, they might even be angry. They don't say anything when they see your test, but you can tell from their faces that they are angry. But how can you tell? How can you tell if someone is angry, or happy, or sad? The answer is that you have learned how to tell someone's emotional state from his or her facial expressions. Are facial expressions of happiness or… Read more

Juice Box Geometry

STEM Activity

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Juice boxes sure are convenient—just poke a straw in and sip away! But have you ever noticed that some juice boxes don't seem to have as much juice as others, even when they have a lot of packaging? You might be amazed how much thought goes into designing a juice box. Each manufacturer has carefully calculated how big each side of the box needs to be to hold a certain amount of juice inside and how altering the box's dimensions affects its overall appearance and… Read more

Juice Box Geometry

Science Fair Project Idea

Scientific Method

Juice boxes are so convenient—just poke the straw in and sip away! But have you ever noticed that some juice boxes don't seem to have much juice, even when they have a lot of packaging? It might surprise you how much thought goes into the design and manufacturing of a juice box. Each manufacturer has carefully calculated how big each side should be to hold a certain amount of juice inside. In this science project, you will find out how different brands of juice measure up. Read more

Keep Your Arduino Robot From Falling Off a Cliff

Science Fair Project Idea

Engineering Design Process

Humans cannot see infrared light, but robots can! At least, they can when they use special infrared light sensors. These sensors can help robots detect nearby objects to avoid collisions and even help them avoid driving off edges. In this project you will build your own Arduino robot that uses infrared sensors to avoid driving off the edge of a table. Read more

Keep Your Candy Cool With the Power of Evaporation!

Science Fair Project Idea

Scientific Method

Did you know that your body has a built-in cooler? And it might not be what you think! Sweat is produced when you are hot, but its purpose is actually to cool your body as the water in it evaporates from your skin. In this science fair project, you'll use the energy produced when water evaporates to cool down chocolate-covered candy so it doesn't melt. Read more

Kitchen Concoctions! (Awesome Summer Science Experiments)

Blog Post

Check in each week at Science Buddies this summer for our Awesome Summer Science Experiments series! Each week, we'll highlight a few activities for awesome science and engineering kids can do at home. We've got a whole summer of fun STEM themes lined up for kids of all ages — for free. This week: awesome summer science experiments in the kitchen! Awesome Kitchen Science Concoctions Head to the kitchen this week for science you can eat! Many of… Read more

Lactose, Sucrose, and Glucose: How Many Sugars are in Your Smoothie?

Science Fair Project Idea

Scientific Method

Do you enjoy drinking smoothies packed full of berries and other tasty fruits? Or maybe you like drinking a creamy milkshake with peanut butter, chocolate, and bananas. Smoothies and milkshakes are often tasty to us because of the sugar in them. But did you know there are different kinds of sugar? Some ingredients in a smoothie can have more than one kind of sugar in them, and our bodies process each kind of sugar differently. In this science project, you will measure the concentration of… Read more

Ladybug Spots and Breeding

Science Fair Project Idea

Scientific Method

Ladybugs are common insects in North American gardens that prey upon aphids, making them all the rage in biological pest control. Ladybugs can be bred in captivity making them a good insect to study. Just chop off an aphid infested plant stem for food, make a water soaked cotton ball for water, and add to a small plastic container with a lid to make a breeding box. You can use ladybugs collected from the wild, or buy ladybugs from your local nursery. The most common species is the 12-spotted… Read more

Landslides: What Causes Rocks to Slide Down a Slope?

Science Fair Project Idea

Scientific Method

Landslides are powerful geological events that happen suddenly, causing fear in people who live in areas with unstable hills, slopes, and cliff sides. Landslides damage the surrounding habitat and can destroy homes in their path. But what causes landslides? Can slides happen on any slope, or do slopes have to have certain characteristics, such as a steep angle and a specific material mass? In this geology science project, you will learn about the different types of landslides and the… Read more

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