Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 1 ounce, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
For suspending pulleys, balances, etc. from support rods, or cross members.
Plated steel collar clamps feature thumbscrews and hooks for suspending pulleys, balances, etc. from support rods or crossbars. For suspending pulleys, balances, etc. from 3/4 inch support rods, or cross members.
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 50 gram, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 200 gram, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
Includes 1 each of 1, 5, 10, 50 and 500 mg weights; 2 each of 2, 20 and 200 mg weights. Comes in rectangular plastic box with rider and forceps
Includes 1 each of 1, 5, 10, 50 and 500 mg weights; 2 each of 2, 20 and 200 mg weights. Comes in rectangular plastic box with rider and forceps
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 1/2 pound, non-rolling hexagonal mass is made of steel, and feature a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
For one funnel. Attaches to ring stand to support funnel.
Magnetic, polytetrafluorethylene coated. For use with magnetic stirrers.
Two optically ground 1" double convex polished lenses fitted into black plastic threaded lens mount. Screw-in metal tripod stand. Black finish. Magnifies approximately 10 times.
Two optically ground 1" double convex polished lenses fitted into black plastic threaded lens mount. Screw-in metal tripod stand. Black finish. Magnifies approximately 10 times.
Flexible stainless steel blade with rounded end, mounted in a polished wood handle.
6 inch flexible stainless steel blade with rounded end, mounted in a polished wood handle.
Flexible stainless steel blade with rounded end, mounted in a polished wood handle.
4 inch flexible stainless steel blade with rounded end, mounted in a polished wood handle.
Easy wind-up tapes are marked in inches and feet on one side and mm and cm on the other. Durable casing for years of use.
Easy wind-up tapes are marked in inches and feet on one side and mm and cm on the other. Durable casing for years of use.
Flexible stainless steel blade with rounded end, mounted in a polished wood handle.
3 inch flexible stainless steel blade with rounded end, mounted in a polished wood handle.
• Build your own simple solar thermal updraft towers
• Collect the sun’s energy and use it to spin five colorful turbines
• Learn about thermal updrafts and solar thermal energy.
Solar thermal energy refers to the technology of collecting solar energy in the form of heat and making it useful, for example, by converting it into electricity or heating homes. Huge solar thermal towers are being installed in sunny places around the world to convert the sun's heat into electricity via turbines powered by hot air. With this kit, you can build your own simple solar thermal updraft towers to collect the sun's energy and use it to spin colorful turbines. Test the solar turbines in various configurations and compare the results from two different towers. Learn about thermal updrafts and solar thermal energy.
The manual contains detailed illustrations and explanations of 24 hands-on experiments that can be conducted using the GENECON and the GENECON Kit. Concepts covered range from circuit types to principles of electromagnetism. This is a must-have manual for every science curriculum.
Dense wood cube 1" sides. Average weight 16 grams/cube. Wood block: 2" x 2" x 1/8" soft wood. Steel block: 2" x 2" x 1/8". Aluminum block: 2" x 2" x 1/8"
Dense wood cube 1" sides. Average weight 16 grams/cube. Wood block: 2" x 2" x 1/8" soft wood. Steel block: 2" x 2" x 1/8". Aluminum block: 2" x 2" x 1/8"
This fascinating Golden Guide from St. Martin's Press covers the entire spectrum of space exploration. Learn about:
- The history of space travel
- Rockets and launchers, spy satellites, space stations, sky labs, and more
- Ways in which space explorers live and work-and how they survive
Full-color illustrations and accurate information make this a must-have for every space enthusiast.
This guide features information gathered by the Voyager space probe in 1989 and other exciting discoveries about the solar system.
Discover the Red-bellied Turtle, which is nearly extinct. Uncover a Garter Snake in your backyard. Locate an Alligator Lizard--or a Legless one. Identifying reptiles is fascinating and fun with this classic Golden Field Guide. Abundant illustrations and the Key Characteristic system, preferred by professionals, make this single-volume reference an outstanding choice for nature projects, collectors of all ages, and scientific study.
• All of North America in one volume
• 278 species and 500 subspecies in 22 families...plus 18 exotics
• Illustrations include juveniles and adults, body forms, undersides, scales, and more!
• Text, range maps, and illustrations seen together at a glance
• Common and scientific names
• Convenient measuring rules
• Plus first aid information for snakebites.
Grow a marvelous crystal garden with these fast-growing crystals. The centers of four flower cards bloom into delicate crystal structures in just a few hours. You can practically see the crystals form before your eyes on the branches of filter-paper trees. Learn about how and why crystals form, and experiment with different colored flowers.
For use with Fossil Chart 16785.
25" x 38" Designed in Germany by a well-reputed chemistry teacher, our full-color, illustrated Periodic Table of the Elements features the natural look of the elements or their most usual application. Our poster and wall-sized editions will fit well on your office or classroom wall.
Look in the box and see the lunar phases in three dimensions! Each hole shows a different lunar phase! Comes with 5 stickers, full moon, new moon, waning moon, crescent moon, and quarter moon. 7.5" x 7.5" x 3.1".
• Instant identification of staff and aides.
• Required in many states for emergency use
• Constructed of nylon reinforced vinyl
• Elastic straps to enable the band to fit most size arm
• Includes 1 each - Security, Emergency, Teacher, Staff & Monitor
The I.D. arm bands are required in many states for emergency use for instant identification of staff and aides. These arm bands are constructed of nylon reinforced vinyl with elastic straps to enable the band to fit most size arm. 1 each - Security, Emergency, Teacher, Staff and Monitor