When students learn about cell biology, they learn all about the nucleus, DNA, RNA, and ribosomes. In other words they learn about how the cell works and how DNA is the blueprint for all the proteins. The proteins do all the work for the cell. Unfortunately the DNA is contained in the […]
Archive for June, 2006
Displays everything from boiling points to electron orbitals. Completely customizable coloring. Each element links to wikipedia. Almost as good as my favorite online periodic table, WebElements, which is run by the University of Sheffield.read more | digg story
Every chemical has its unique characteristic properties. These properties can include hardness, density, melting point, boiling point, color, taste, texture etc. No matter what sample you have of a pure substance they will display its characteristic properties. This is how a an unknown chemical can be identified. The properties of the unknown chemical can be […]
Muscle Pair Demonstrations
Published by June 30th, 2006 in Education, Demos, Video and Lessons. 0 CommentsSeventh graders in the state of California are required to learn how bones move. Of course bones move because skeletal muscles are attached to bones, and when they contract, they make a bone move in one direction. Muscle work in pairs and when one muscle contracts, the other relaxes. Below are two […]
This is a very popular demo in science classes around the country. You need a coffee can with lid, candle, and irrigation tubing (slide 1). You can use cake flour, corn starch, or lycopodium powder. Put some of the substance into a petri dish. Light a match and place the flame next to the substance. […]
This is not so much a lesson but rather a demo. This is kind of a “Wow!” demo. The chemical composition of the penny has varied greatly through the years. From 1793 to 1837 it was actually pure carbon. It went through many changes since then. From 1864 to 1962 it was bronze (95 percent […]
Solar System Scale Model Tour
Published by June 24th, 2006 in Education, Demos and Lessons. 0 CommentsWhen students learn about the Solar System they have a difficult time visualizing or comprehending what the distances are like between the planets and the sizes of the planets and the Sun. Most textbooks show pictures of the planet on one scale and the distances between the planets on another scale. They never have them […]
When students learn about the structure of an atom, they have a hard time understanding that the space between the outer electrons and the nucleus is vast. This graphical scale model has a nucleus the size of a small Frisbee and 11 miles to the right is the 1 pixel size electron. Truly […]
In teaching the solar system, it is important for students to understand the the sizes of the planets and the stars, since size affects their properties.Â? Scale models are an important method of conveying extremely large sizes to students.Â? There are many types of scale models of the solar system.Â? This is […]
This is from a terrific site, Steve Spangler Science. I do many density demos and lessons and I am going to try this one this year.
“ProjectsFizz, Bubble, Erupt! Learn how to make an inexpensive science toy that will be a guaranteed hit with the kids! Ok, so everyone knows that oil and water don’t […]
