"weather"

What causes rocks to change over time? This hands-on kit lets students use igneous, sedimentary and metamorphic specimens to examine processes such as weathering, lithification, metamorphism and magmatic assimilation.

Kit includes:
• Samples and study charts for 30 student groups
• Large specimens for easy examination
• Chart with mounted specimens
• Detailed study guide with physical properties and descriptions of more than 50 rocks, minerals, and ores.

Four to six adults of each sex (including virgin females) have been carefully selected for the parent generation. Larvae will be visible within a week of receipt. Please order 7-10 days in advance.

We fully guarantee the purity and viability of our Drosophila melanogaster cultures. A large, vigorous culture is shipped in a shatterproof plastic vial. To ship Drosophila cultures with living larvae we require 10 days' notice prior to use date. During very cold weather, adult flies may die but eggs and larvae usually survive. Allow cultures to come to room temperature before checking under low magnification for eggs and live larvae. Complete instructions are always included.

Combine 'Write-On/Wipe-Off' activities with interactive, multimedia coverage of key NGSS topics.

Its five stage switch provides red, blue, red/blue alternating, red/blue blend and a flashlight selection

Medical transporter totes for on-site collection, storage, and transportation of temperature-sensitive specimens, organs, medications, and medical devices.

Monitor outdoor temperature with a compact window thermometer that stores daily high and low records.

BOX 1 WEATHER...ACROSS THE CURRICULUM

Measure humidity and temperature with this psychrometer kit.

A Helpful Addition to Meteorology Lessons

A Must Have For the Classroom

Observe the sky and identify various cloud types with this simple device.

What are the reasons for the seasons? Students read and find out that it all begins with the Sun.

A Game Your Students Will Want to Play

Dynamically explore The Earth on a web browser!

Drosophila melanogaster, the common fruit fly, is widely used in genetic studies. They express a number of mutations such as eye, wing, and body mutations.

Drosophila melanogaster, the common fruit fly, is widely used in genetic studies. They express a number of mutations such as eye, wing, and body mutations.