First Grade, Human Biology & Health Science Experiments (Page 12)

Can you see your Hole hand?

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Have you ever stopped to wonder why we have two eyes, but we only see one image? Usually you only see one image because your brain takes the information from your left eye and your right eye and combines them, without you even noticing! But sometimes your brain is too smart for its own good; it makes assumptions (or guesses) about the things we are seeing. When your brain makes guesses it can sometimes make mistakes, as it does in this experiment! Read more

Can you spot the dot?

STEM Activity

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Have you ever wanted to make something disappear (maybe your homework!)? In this activity we will take advantage of the way your eyes and your brain talk to each other, to make colored dots seem to appear and disappear (sorry, it probably won’t work on your homework)! Read more

Cardiovascular System Science: Investigating Heart Rate Recovery Time

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As Valentine’s Day approaches, we’re increasingly confronted with stylized images of the heart. Real hearts serve very important functions – a person’s heart beats to supply blood to their entire body, and the heart has to work harder when they exercise. Have you ever wondered how quickly your heart beats when you exercise, or how long it takes to recover back to its normal rate after you’re done exercising? In this science activity, you’ll get to do some… Read more

DIY Face Mask

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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

Do Heavy Loads Shorten Your Steps?

Science Fair Project Idea

Scientific Method

You probably notice that when you carry something heavy—whether it’s a backpack filled with books, grocery bags, or a weighted vest—the way you walk changes. Your body adjusts in many ways to maintain balance, avoid fatigue, and reduce injury risk. One of these adjustments happens in your step length—that is, how far you move forward with each step. Biomechanical studies show that adding extra load (weight) often causes people to take shorter, more cautious steps. This… Read more

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

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Have you ever noticed that some people are a lot pickier about the food they eat than other people are? They might be more selective because they are supertasters! To supertasters, the flavors of foods are much stronger than to average tasters. Whether or not someone is a supertaster comes down to the taste buds on his or her tongue, and you can actually investigate a person's supertaster status by looking at this. Are you a supertaster? Find out with this tongue-based activity! Read more

How Sour or How Sweet is Your Lemonade?

STEM Activity

Cooking is a fun and rewarding activity, allowing you to be cook and a scientist at the same time, experimenting with endless taste combinations! The five tastes humans can experience are: sweet, sour, salty, bitter and umami. But have you ever experienced some combinations that were delicious and others that were downright yucky? How do cooks come up with delicious recipes, and even more amazingly, how can they replicate the same exact flavors over and over again? Does science have anything to… Read more

How to Help Pass Gas

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Has your stomach ever ached so bad you felt as if it was blown up like a balloon—maybe after the big Thanksgiving meal? You may have had a large amount of gas trapped in your stomach and intestines. But where does the gas come from that makes you feel so uncomfortable, and how does it disappear again? In this activity, you will blow some bubbles to investigate how a specific medicine can help you feel better, so next time your tummy hurts because you are bloated, you will know how to cure… Read more

How Warm is Just Sweet Enough?

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Can you recall how a piece of warm apple pie or a cup of hot chocolate milk tastes when you let it cool? Maybe you even prefer to have these treats at room temperature. Why is this? Can flavor change even when you are not adding ingredients, cook or bake it? Try this activity and discover how temperature influences flavor! Read more

Model How R naught (R₀) Shapes an Epidemic

Science Fair Project Idea

Scientific Method

Even during a global pandemic like COVID-19, there are differences in how the epidemic unfolds within communities. Some communities see early, large waves of infected individuals, while others see smaller numbers of infections over a longer period of time, and others may not appear to have an epidemic at all. Could R₀ (pronounced R naught), account for some of this variation? R₀, the basic reproduction number of a disease, quantifies how many people, on average, an infected… Read more

First Grade, Human Biology & Health Science Experiments (137 results)

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