COSI Connects is COSI's Digital Doorway for fun at-home science discovery and learning.
We provide exciting and engaging science through COSI videos and hands-on science you can try with your family at home.

Exploring Insulation
Participants will learn that sharks have a skeleton made of cartilage and a liver filled with oil, which helps sharks to thrive in their environment. They will build a model to demonstrate the buoyancy of sharks.


Added On: 05/29/2020
Age Ranges: High School, Middle
Subjects: Fossil Friday, Physics, Paleontology, Biology, Zoololgy
Bernoulli's Principle in Action

See Bernoulli's principle in action as you supply some fast-moving air to levitate a ping pong ball.


Added On: 05/28/2020
Age Ranges: Elementary, Middle
Subjects: Educator Workshops, Physics
Art with Science: Marbling
In this activity, use science to create beautiful marbled artwork with just a few household supplies.


Added On: 05/27/2020
Age Ranges: High School, Family, Elementary, Early Childhood, Adult, Middle
Subjects: Art, Physics, Other
Candy Camouflage
In this activity, participants will learn about camouflage. They will use candy to show how camouflage can be used by prey to avoid being caught by predators.


Added On: 05/26/2020
Age Ranges: Elementary
Subjects: Nature, Biology, Zoololgy, Educator Workshops
Beak Buffet
Have you ever noticed that different species of birds have very different types of beaks? In this activity, learn about adaptation and how a bird's beak shape helps them to find food and survive in their environment.


Added On: 05/22/2020
Age Ranges: Elementary
Subjects: Fossil Friday, Biology, Paleontology
Ice Balloons
Make your own ice balloons, then design and perform your own experiments using basic household supplies.


Added On: 05/21/2020
Age Ranges: Early Childhood
Subjects: Educator Workshops, Experimental Design, Physics
Make your own Slime!
Learners will create their own slimy kitchen science substances!


Added On: 05/20/2020
Age Ranges: Elementary, Middle
Subjects: Chemistry, Physics, Other
Start a Sourdough Culture
The scientific process of fermentation, the breakdown of a substance by microorganisms like bacteria and yeast, is used in both brewing beer and making bread. In today's activity, learn how to use wild yeast and fermentation to create a sourdough starter - the first step towards baking delicious sourdough bread.


Added On: 05/19/2020
Age Ranges: Adult, Family
Subjects: Biology, Hockey Science
Float Your Boat
Learn about the Titanic, then try experimenting with different objects to see which ones are buoyant.


Added On: 05/18/2020
Age Ranges: Early Childhood, Elementary
Subjects: History, Engineering, Physics, Other
Cookie Excavation: Paleontological Field Techniques
Use some kitchen tools and cookies to practice excavation. See if paleontology or archaeology might just be a good future career path for you!


Added On: 05/15/2020
Age Ranges: Middle
Subjects: Fossil Friday, Careers, Archaeology, Paleontology
Balloon-Powered Pinwheel
Newton's Third Law states that for every action, there is an equal and opposite reaction. In this activity, you will use that principle to make a balloon powered pinwheel!


Added On: 05/14/2020
Age Ranges: Elementary, Middle
Subjects: Hockey Science, Engineering, Physics
Stay Active!
Staying active is an important part of your overall health. The key is to find activities that both raise your heart rate and that you enjoy doing.In this activity, you will get active while practicing experimental design and data analysis!


Added On: 05/13/2020
Age Ranges: Family, Middle
Subjects: Hockey Science, Biology, Health
Make a Cotton Ball Launcher
How can you practice energy transfer at home? Try making your own cotton ball launcher!


Added On: 05/12/2020
Age Ranges: All
Subjects: Hockey Science, Engineering, Physics
Pulse Pick
Have you ever taken your heart rate? In this activity, learn how to measure a pulse and construct a simple tool to help you to take that measurement.


Added On: 05/11/2020
Age Ranges: Elementary
Subjects: Educator Workshops, Biology, Health
Make a Wind Cannon
Wind is a noticeable movement of a gas like air. We can perceive it, or feel it, when we walk outside on a rainy day. In this activity, make your own wind cannon and try your hand at "throwing" small puffs of air!


Added On: 05/05/2020
Age Ranges: Elementary, Middle
Subjects: Educator Workshops, Environment, Engineering, Physics
BioBlitz Educator Guide
A BioBlitz is a way for our community to work together to find as many species as possible in Ohio during the four days of the Science Festival. You can participate by simply snapping photos of plants and animals in the wild and uploading them to the free app iNaturalist. Observations will be made available to naturalists and researchers. Let's explore Ohio's biodiversity!


Added On: 05/04/2020
Age Ranges: All
Subjects: Other, Environment, Conservation, Nature
Erosion and Weathering
Participants will learn about the forces that contribute to erosion and weathering, and create a model that shows how erosion and weathering can expose buried fossils to paleontologists.


Added On: 05/01/2020
Age Ranges: Elementary
Subjects: Paleontology, Nature, Environment, Fossil Friday
Can you identify birds that you see outside? With this activity and our handy list of birds of Ohio, you'll be on your way to identifying birds in your backyard in no time!


Added On: 04/30/2020
Age Ranges: All
Subjects: Paleontology, Nature, Environment, Biology, Fossil Friday
Seeing Color
Explore how our cones - the photoreceptor cells on our retinas that help us to see color - become fatigued. Use a simple optical illusion to experience the result of that fatigue!


Added On: 04/29/2020
Age Ranges: Middle, Elementary
Subjects: Paleontology, Neuroscience, Biology, 5 Senses, Fossil Friday
Surface Tension Exploration
Explore surface tension in three different ways in this activity. First, see how many drops of water fit on the surface of a penny, then, create your own "water bug" out of a paperclip. Lastly, see if you can power a tiny boat with nothing but soap and water!


Added On: 04/28/2020
Age Ranges: Middle, Family, Elementary
Subjects: Educator Workshops, Physics, Chemistry
Make Oobleck!
In this lesson, we will explore the properties of "Oobleck" - a simple mixture of cornstarch and water. Oobleck is unique because it is a non-Newtonian fluid. At room temperature, it can behave as both a solid and a liquid.


Added On: 04/27/2020
Age Ranges: Middle, Family, Elementary, Early Childhood
Subjects: Physics, Chemistry, Other
Designing DNA
Participants will understand what DNA is made of and be able to make a model of the DNA double helix. Then, learners will have the opportunity to use household items to extract DNA from a strawberry.


Added On: 04/24/2020
Age Ranges: Middle, High School, Family
Subjects: Paleontology, Biology, Fossil Friday
The Chair Challenge
Have you seen the chair challenge? It turns out that this challenge is a fun way to discuss scientific concepts. In this activity, complete a series of challenges and discuss them in terms of gravity and center of gravity.


Added On: 04/23/2020
Age Ranges: Middle, High School, Family, Adult
Subjects: Physics, Other
Have you ever wondered, "how does nature do it?" In this activity, learners will investigate examples of biomimicry. Then, they will take a moment to step into nature and observe, looking for and appreciating the incredible structures and processes utilized by organisms every day.


Added On: 04/22/2020
Age Ranges: High School, Family, Elementary, Adult, Middle
Subjects: Science Now, Engineering, Biomimicry, Environment
Sound Waves
Investigate sound waves at home using nothing more than a coat hanger and some string! This activity will help you to explore and understand sound energy and how it moves. Then, use what you learned to make simple string telephones.


Added On: 04/21/2020
Age Ranges: Elementary, Middle
Subjects: Oceanography, Science Now, Physics
Egg Drop - Be An Engineer!
Become a packaging engineer! You will design a protective package for a raw egg to allow the egg to withstand a fall without cracking. To test your design, the egg will be dropped from a height with the help of an adult.


Added On: 04/20/2020
Age Ranges: Elementary, Family
Subjects: Other, Biology, Engineering
Forensics is the use of science and technology to investigate and establish facts, especially in criminal and civil courts of law. In this activity, learn how fingerprints are analyzed by forensic scientists. Then use what you learned to analyze your own fingerprints.


Added On: 04/17/2020
Age Ranges: Family, Elementary, Middle
Subjects: Educator Workshops, Forensic Science
This set of activities provide effective ways to demonstrate and talk about germs and how they spread with young children. In Part 2, learn about the importance of hand washing by monitoring mold growing on potatoes in closed containers over a 3-week period.


Added On: 04/16/2020
Age Ranges: All
Subjects: Science Now, Biology, Health
3D Modeling
Have you heard of or tried 3D printing before? In this activity, you will learn a bit about the first part of 3D printing: using a computer to create your 3D design. This is called 3D modeling, or CAD: Computer-Aided Design.


Added On: 04/15/2020
Age Ranges: High School, Middle
Subjects: Science Now, Engineering
Citizen Science at Home
Did you know that you don't have to be a trained scientist to participate in cutting-edge scientific research? Learn about citizen scientists who have made valuable contributions to research projects and begin your own citizen science journey!


Added On: 04/14/2020
Age Ranges: Family, Adult, High School
Subjects: Science Now, Research
Start a Compost Pile
Start your own compost pile! This activity is aimed at adults and families. Learn how to use decomposition to your advantage, reduce the waste you're sending to a landfill, and create valuable compost that will add nutrients to your garden.


Added On: 04/13/2020
Age Ranges: Adult, Family
Subjects: Other, Environment, Gardening
How do we Name Things?
Have you ever thought about how plants are named? In this activity, you'll get to flex your creativity muscles as you try to come up with names for plants based on how they look. Then, try matching them with their actual common names.


Added On: 04/10/2020
Age Ranges: All
Subjects: Gardening, Biology, Behind the Gadgets Stage, History
What is a habitat? In this activity designed for early childhood learners, create a habitat for a stuffed animal or toy out of materials around the house! Discuss what sorts of things the animal needs in its habitat to survive.


Added On: 04/09/2020
Age Ranges: Family, Early Childhood
Subjects: Gardening, Environment, Biology, Educator Workshops, Zoololgy
Starting a Garden
Springtime is a great time to plant seeds! In this activity designed for early childhood learners, explore topics related to the garden! Plant seeds, discuss emotions while creating grass heads, and make a rain gauge for your garden.


Added On: 04/08/2020
Age Ranges: Early Childhood, Family
Subjects: Biology, Other, Gardening
Technology: Past, Present, and Future
In this activity, you will discuss the meaning of the word, "technology." Then, you will have the opportunity to make a technology that has been around during all of our lifetimes - paper! After making your paper at home, continue to Part 2 to start thinking about future technologies.


Added On: 04/07/2020
Age Ranges: Family, Middle
Subjects: Science Now, History, Writing
Nature's Zoom Lens
In this exploratory activity, see if you can create a water lens. Explore refraction with water in a ziplock bag. Then see if you can make a convex droplet of water that will magnify an image.


Added On: 04/06/2020
Age Ranges: Elementary, Early Childhood, Family
Subjects: Educator Workshops, Physics
Make Frost!
In this activity, learners explore why frost forms. They will then create their own frost using a solution of ice water and salt in a glass.


Added On: 04/05/2020
Age Ranges: Elementary
Subjects: Physics, Environment, Hockey Science
The "Magic" Wand of Static Electricity
Learn how to do a few "magic" tricks that are really just using the science of static electricity. Then, use what you have learned to put on a "Magic Show" for your household!


Added On: 04/04/2020
Age Ranges: Elementary, Early Childhood
Subjects: Theater, Physics, Behind the Gadgets Stage
Dinosaur Footprints and Fossils
This activity is best for young learners. Learn about how scientists study fossil footprints and make your own.


Added On: 04/03/2020
Age Ranges: Early Childhood, Elementary
Subjects: Fossil Friday, Paleontology
Clean up Litter!
Have you seen litter around your community? Plan a trip with members of your household to go out and clean up the community! You can clean up a neighborhood, local park, or hiking trail. Find tips, safety instructions, and best practices in the activity.


Added On: 04/02/2020
Age Ranges: Family
Subjects: Other, Environment
Estimation and Educated Guesses
Estimating is an important skill for all of us to learn and practice. Test your estimating skills in Part 1. Then if you want more of a challenge, move on to Part 2 to try some back-of-the-envelope estimates. Don't be afraid of wrong answers - the idea is to come up with a reasonable educated guess.


Added On: 04/01/2020
Age Ranges: All
Subjects: Science Now, Mathematics
Make a Rainbow
White light is made up of all the colors of the rainbow. In this activity, use water, a mirror, a flashlight, and a shallow pan or bowl to make a rainbow!


Added On: 03/31/2020
Age Ranges: Elementary
Subjects: Behind the Gadgets Stage, Physics
Ice Cream Shake
Explore liquids, solids, and physical changes while you make a sweet treat. It just takes a little bit of work and a little bit of science to make homemade ice cream!


Added On: 03/30/2020
Age Ranges: All
Subjects: Hockey Science, Cooking, Physics
Make a Glider
Engineer your own hoop glider! See if you can create a simple glider that will fly when you throw it. Learn about the physical forces involved in making your glider fly.


Added On: 03/29/2020
Age Ranges: Family, Elementary
Subjects: Behind the Gadgets Stage, Engineering, Physics
Glow in the Dark Jello
Use tonic water, which contains the fluorescent substance quinine, to make Jello that glows under a fluorescent blacklight!


Added On: 03/28/2020
Age Ranges: All
Subjects: Science Now, Chemistry, Cooking
Baffling Body
Proprioception is a body's sense of its place and position in space - sometimes thought of as a "sixth sense." In this activity, try some experiments that explore the unique functions of the body and brain.


Added On: 03/27/2020
Age Ranges: Elementary, Family
Subjects: Educator Workshops, 5 Senses, Neuroscience
Crash Landing!
In October of 2019, NASA unveiled new spacesuits intended for the Artemis program, a mission to land humans on the moon as a stepping stone for future missions to Mars. In this activity, you will be challenged to think about the future of space travel and what it might take to survive for a long period of time on the moon.


Added On: 03/26/2020
Age Ranges: All
Subjects: Space, Science Now
Make a Timeline
Scientists use timelines to record important events in the Earth's history, just like we can make a timeline of a day in our life. Explore the history of the earth by making a timeline of events in your own life.


Added On: 03/25/2020
Age Ranges: Elementary, Family
Subjects: Fossil Friday, History, Paleontology
One Million Stars?
How much is one million? In this activity, learners will estimate the distance they'd need to walk to take one million steps.


Added On: 03/24/2020
Age Ranges: Family, Elementary, Middle
Subjects: Educator Workshops, Mathematics, Paleontology
Marker Chromatography Flowers
What colors are hidden in markers? Learners will use chromatography to discover the different pigments hidden in markers. Then, use that chromatography to create beautiful flowers out of coffee filters.


Added On: 03/23/2020
Age Ranges: Family, Elementary, Middle
Subjects: Science Now, Art, Chemistry
Found Fossils: A Biostratigraphy Challenge
Calling all future micropaleontologists! In this in-depth activity, practice biostratigraphy techniques used to assign an age to deep ocean core samples.


Added On: 03/22/2020
Age Ranges: High School, Middle
Subjects: Science Now, Oceanography
Continents and Currents
Demonstrate the flowing currents of Earth's oceans with a fun and colorful demonstration.


Added On: 03/21/2020
Age Ranges: Elementary
Subjects: Science Now, Oceanography
Soap: How does It Work?
In this activity, explore the mechanism behind how soap works with three different demonstrations. First, a simple demonstration with pepper, water, and dishwashing soap will demonstrate to young children the concept that soap gets rid of germs. For a more elaborate and artistic demonstration, see what soap does to food dye in whole milk in Part 2. For those wanting to really understand what's happening on a molecular level, model what's going on in Part 3.


Added On: 03/20/2020
Age Ranges: High School, Family, Elementary, Early Childhood, Middle
Subjects: Science Now, Experimental Design, Chemistry, Biology, Health
Tiny Superheroes of the Sea
Plankton are incredibly numerous and diverse: from tiny, microscopic viruses and bacteria, to the phytoplankton that are responsible for well over 50% of the oxygen we breathe, to the larvae of larger sea creatures, this is a diverse and fascinating group of organisms! In this activity, explore plankton virtually while practicing your online research skills.


Added On: 03/19/2020
Age Ranges: High School, Middle
Subjects: Science Now, Oceanography, Biology, Research
Why Are Whales So Big?
Learn about producers, consumers, and decomposers as you discuss the flow of energy through a food chain. Then, use some yarn and paper plates to create a food web. This is a great way to discuss impacts that occur when a link in the food web is missing.


Added On: 03/18/2020
Age Ranges: Family, Elementary, Middle
Subjects: Fossil Friday, Biology, Paleontology
Chocolate Crystals
Grab some chocolate and explore the science behind it! First, observe different kinds of chocolate and see what differences you notice. Then, try your hand at tempering chocolate to see if you can achieve the most desirable crystal structure - form V!


Added On: 03/17/2020
Age Ranges: All
Subjects: Science Now, Cooking, Chemistry, Physics
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