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Yeasts and bacteria come in all shapes and sizes. They also have an optimal temperature range at which they can grow and reproduce. Most yeasts and bacteria cannot multiply at very high or very low temperatures, but there are exceptions. In this weeks Science Corner we are going to test how sensitive yeast is to temperature. A Hot Yeast Experiment You will need 3 clear bottles or glasses, 3 … [Read more...]
Science Corner: In Search of Animal Scat
Animals are present in many of the places you go, but you seldom see them because they are afraid of people. However, there are many signs of the presence of animals in a habitat. You may see tufts of hair on a fence post or tree branch. You may see crushed grass or leaves from where the animals have bedded down for the night. And, if your really lucky, you might even see some scat! Scat … [Read more...]
What is the Scientific Method?
So what is the scientific method? Well in a nutshell, the scientific method trains the brain to examine and observe before making a statement of fact. It is the main method scientists use when asking and answering questions. And using the scientific method will teach your students to look at all the evidence before making a factual statement. In today's science corner, I wanted to explain … [Read more...]
Science Corner: Sending a Secret Message
With Valentine's Day just around the corner, I thought it was a perfect time to share with you an experiment that you can use to send secret messages to your loved one ;). This experiment is probably familiar to most of you, but the science behind it is probably not. Sending a Secret Messages This is one of my daughter's favorite things to do. There's nothing like getting a blank piece of … [Read more...]
Science Corner: Kitchen Acid Test
Acid test are always fun because of the color changes. In addition, it's a great way to show your kids that science is all around us, even in the kitchen! Kitchen Acid Test: For this experiment you will need to make your own indicator, which will need to cool before you can use it. You will need a head a red cabbage and a variety of foods from your kitchen to test, such as lemon juice, … [Read more...]
More Winter Science Fun – Salt vs. Snow
Winter is a great time to explore the principles of chemistry through experimentation. In other words, winter provides an awesome opportunity for some hands-on winter science fun! Last month I share an experiment about snowflake crystals. This month I'm sharing with you an experiment that is very cool :). Which one freezes first? In this experiment, you students will learn about the … [Read more...]