Wednesday, September 22, 2010

Food Analysis Lab

We've been testing for Carbohydrates, Proteins, and Fats in lab this week.  These are the compounds that make up our food and us!  Compounds are made up of elements and elements are made up of atoms.  Do you remember what atoms are made up of?  What is the lightest element?  What one element do all living things share? 

15 Must-Know Elements for Biology: H, C, O, N, Na, Ca, K, Cu, Fe, He, Zn, Al, Au, S, P

Testing for Starch

Testing for Protein




Testing for Lipids



Friday, September 17, 2010

Scientific Method

1. Question/Purpose
2. Form a Hypothesis (Educated guess)
3. Test your hypothesis (experiment...after writing the steps to the procedure)
4. Make observations (record data)
5. Analyze your data (put into graphs and charts...what did your experiment show?)
6. Draw a conclusion (Was your hypothesis correct?)
7. Share your results

The 7th graders hypothesized that these sponge critters (pictured below) would come out faster in hot water.  They reviewed and used the steps of the Scientific Method to prove it!

Monday, September 13, 2010

Having a Metric "Ball"


King Henry Died Drinking Chocolate Milk!
1000, 100, 10, .10, .01, .001
Base units are meters, liters, grams
We do NOT use inches, feet, ounces, gallons, etc in Science!

Saturday, September 11, 2010

We Now Know How to Measure Up!

Just say "NO" to inches, feet, pounds, fahrenheit, ounces, and gallons in biology class!  Scientists use the metric system to measure! 

Friday, September 3, 2010

Microscopic Stuff!

We've got the procedure for using microscopes down to a science! Ha ha! We checked out protists like amoebas, paramecium, and euglenas, and also the living animal specimens hydra, daphnia, and planarian flatworms!  It was cool!