Science is for Kids

This video discusses the six levels of organization in ecology: species, populations, communities, ecosystem, biome and biosphere. I was focusing on Minnesota ecology when I recorded this video I hope this was helpful!

Answer: Enzymes are protein molecules which serve as catalysts for chemical reactions. A catalyst is a substance which will decrease the activation energy for a reaction. So why is this important? Enzymes will make reactions occur much more easily, quickly and more efficiently than they ever would without the enzyme. Here is a video of an enzyme demonstration I like to share with my students. The video shows how an enzyme present in our saliva (spit) can aid in the process of digestion by acting on starches present in the foods we eat. I hope this was helpful!

This video shows a chromatography experiment used to separate the different color pigments that are found in a black wet erase marker. This is an experiment that could easily be done at home.  Paper towel could be used instead of the chromatography paper I used to make this video.  You just need to use paper that is absorbent. It would also be fun to try this experiment using different types of markers or pens.  You could also try different liquids, rubbing alcohol would be an interesting choice. NGSS Connection: HS-LS1-1 3.Reasoning a. Students use reasoning to connect evidence, along with the assumption that theories and laws that describe the natural world operate today as they did in the past and will continue to do so in the future, to construct the explanation. Students describe* the following chain of reasoning in their explanation iii. Proper function of many proteins is necessary for the proper functioning of the cells. I have used this...

This video discusses how osmosis can change the appearance of red onion cells by adding or removing water from the cells. I hope this was helpful!