November 20, 2009 by Mark Goldner
Check out this website which shows a great perspective on size and scale of things.
(I’ve had some trouble using this site in Firefox; I’ve had better luck in Safari.)
Here’s a little extra credit assignment:
1. How many times bigger is a human red blood cell than a water molecule?
2. How much bigger is a typical human being than a red blood cell? Than a carbon atom?
3. How many um, nm, and pm are in an inch?
(0.001 meter = 1 millimeter =1000 microns = 1,000,000 nanometers = 1,000,000,000 picometers)
Show your work for extra credit.

Posted in science | Tagged cells, size | No Comments »
October 12, 2009 by Mark Goldner
Have you ever stopped to observe the natural world around you? I mean, really look, listen, smell, etc.? A good scientist has developed the skills to make very very careful observations about her/his environment and can use those observations to infer connections that exist in that environment.
How can we “get in tune” with our world. When you spend time outside, what do you observe? What do you see? Feel? Hear?
Continue Reading »
Posted in science | Tagged ecology, Homework, observing, OYE | No Comments »
November 15, 2009 by joshuash
Observations
Some things that I observed during my 20 minutes of OTE were that I noticed that the some squirrels were already collecting acorns and digging holes for them to put into. When it was raining, I saw some earthworms come out of the soil, go onto the cement, and get drowned by rain. Continue Reading »
Posted in science | Tagged ecology, OYE | 3 Comments »
October 31, 2009 by heathscience
As we wrapped up our “Little Jars of Crud” Experiment, we had an excellent session where each group shared their work with the rest of the class. What impressed me was the very high level of participation and respect that each of you showed during this Scientific Discourse.
I’d like you to reflect on why this process was so successful, Continue Reading »
Posted in science | Comments Off
October 26, 2009 by Mark Goldner
What happens if you push an object (say, a car) at a constant force? Well, in our Car Push Investigation, we explored that question by pushing Mr. Goldner’s wicked cool grey Prius.
We use bathroom scales to measure the force of our pushers, and we create a record of where the car was at constant time intervals using orange cones.
We can observe the motion of the car by looking at how Continue Reading »
Posted in science | Tagged acceleration, car_push_lab, physics | No Comments »