Jacqueline K. Barton

Barton discovered that DNA conducts electric current but not as well — or not at all — when its tight organization is disrupted by damage from certain chemicals or mutations. That finding should allow researchers to look for mutations, using chips made of strands of DNA attached to gold on silicon wafers. Barton is investigating […]

SaH: Wildlife at Home

Wherever you live, you can find other living things occupying the same space. Birds, insects, mammals and more can be found in rural areas, in cities, and in suburbs. Take a look around your home and make observations! Share your findings in the comments below!   Question What wildlife is sharing your habitat?   Materials […]

SaH: Stratigraphy Demo

What is stratigraphy? Stratigraphy is the study of strata – or layers. When we look at things that have been layered, such as the stories of a building, which layer had to be built first? Was it the top floor or the basement? The same is true for soil layers!   Question How does Sand […]

SaH: Slime

A polymer is a chemical compound consisting of repeating structural units. In this experiment, we will create a polymer (slime) from different ingredients to see which slime is the best!   Question Which ingredients make the best slime?   Materials Borax Slime 1 tablespoon of borax per ½ cup of warm water ½ cup glue […]

SaH: Scaled Solar System

Have you ever tried to imagine how vast our Solar System is? The Solar System we live in consists of the Sun, eight major planets, and hundreds of moons. We can make a scaled model that is a fraction of the size of our real solar system using toilet paper and markers! Send us pictures […]

SaH: Light Sensors

Have you ever taken a close look at your eyes? Let’s explore how changes in light change our eyes!   Question How does the amount of light in a room change your eyes?   Materials Mirror Colored pencils, markers, or crayons Paper   What to Do Use the mirror to make a drawing of your […]

SaH: Fruit & Veggie Classification

Investigate fruits and vegetables you know very well and begin to take a closer look at ones you’ve never tried before. In this experiment, you may find some new fruits and vegetables you love to add to your meals!   Question How do new fruits and vegetables compare with the ones you are more familiar […]

SaH: Elephant Toothpaste

Chemical reactions can be a lot of fun! In this experiment, while it is not as big as some of the ones you can find on the internet, we will be making elephant toothpaste with ingredients you might be able to find around your house.   Materials Eye protection – you can use glasses or […]

SaH: Chromatography

Discover the science behind an art project. When we use markers, as intended, we only see one color in the ink. Using a technique called chromatography, we can separate the individual colors within a marker that give it its color.   Question Which marker has the most colors hidden inside it?   Materials Coffee filter […]

SaH: Chocolate Density

This activity explores the density of different fun sized candy bars. Can you figure out which is more dense? Have fun with this tasty science lesson!   Question Which piece of chocolate is more dense?   Materials Two or more different fun sized chocolate candy – with and without nuts. 3 Musketeers and Snickers work […]