Activity
Science Buddies

Science Buddies: Measure Photosynthesis With Floating Leaves

For Students 3rd - 5th
In this activity, you will be able to observe the oxygen production in leaves by doing a floating leaf disk experiment. You can also find out how quickly plants produce oxygen, and what variables affect photosynthesis.
Article
History of Computing Science

History of Computing Science: Edvac

For Students 9th - 10th
EDVAC (Electronic Discrete Variable Automatic Computer) was an early computer that was one of the first to use the binary number system to represent information. This lecture is a brief presentation of the EDVAC.
Handout
Wyzant

Wyzant: Chem Tutor: Gases

For Students 9th - 10th
A lengthy page covering most all the gas laws. Each law is described in words and stated as an equation. The use of each law in solving problems is demonstrated. Some problem-solving tips are provided. There are 23 practice problems with...
Interactive
NASA

Sci Jinks: Rainbow Simulation

For Students 3rd - 8th
Play around with the variables involved in rainbows. We know we usually see rainbows following a rain shower. What's the science behind it? Find out with this interactive.

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