Aluminum with 1/2" steel thumbscrews. Swivels and locks to any angle. For rods up to 5/8" diameter.
Aluminum with 1/2" steel thumbscrews. Swivels and locks to any angle. For rods up to 5/8" diameter.
Ingenious, easy-filling models prove different geometric shapes hold the same volume. The set includes six clear plastic solids: cone, sphere, cylinder, cube, pyramid and rectangular prism. Grades 3+.
U.S. and Metric scale, 6" and 150mm. Graphics may vary.
Superior, all purpose laboratory tubing. Flexible transparent, PVC.
This clear PVC laboratory bottle features a compact, square design that provides excellent visibility of contents while making efficient use of storage space. The wide-mouth opening makes filling, pouring, and removing samples easy, while the secure screw-on closure helps protect contents during storage. Lightweight yet durable, the transparent PVC construction offers good chemical resistance and makes this bottle well suited for a variety of laboratory, classroom, sampling, and general storage applications. Features: - 50 mL (1.7 oz.) capacity - Clear PVC construction - Wide-mouth opening for easy filling and dispensing - Space-saving square design - Black screw-on closure - Good chemical resistance - Lightweight and durable - Approximately 60 mm high × 38 mm wide × 38 mm deep - Approximately 25 mm neck I.D.
This program looks at the wide range of climates in North America and around the world, and examines how factors such as the sun, wind, temperature, precipitation and position of Earth determine the weather for a particular region. Live footage, vivid graphics and a hands-on experiment help to clearly illustrate these concepts. One of six volumes in the Weather Fundamentals DVD Series in the Schlessinger Science Library. Part of the Schlessinger Science Library in Action Collection. This title correlates to the National Science Education Standards for Earth and Space Science -- structure of Earth's system, Earth's history and Earth in the solar system. A Teacher's Guide is included and available online that features additional information on the topic, vocabulary words, discussion questions, follow-up activities and lists of recommended books and Internet resources. 23 minutes. Grades 4 to 7.
Pre-cleaned glass, premium quality, 1mm thick, 3" x 1" colored frosted end slides. Packaged in boxes of 72 slides.
Pre-cleaned glass, premium quality, 1mm thick, 3" x 1" colored frosted end slides. Packaged in boxes of 72 slides.
Pre-cleaned glass, premium quality, 1mm thick, 3" x 1" colored frosted end slides. Packaged in boxes of 72 slides.
Economical 2" official's whistles. Made of high impact plastic with cork "pea" & stainless steel split ring. Available in 11 school colors.
Features 3 1/2 digit, 2,000 count display, transistor test, audible continuity, diode test, signal injector, overload protection, pocket-size, low cost. Dimensions: 5" X 2 29/32" W X 1"D. Weight 4.5 oz.
Features 3 1/2 digit, 2,000 count display, transistor test, audible continuity, diode test, signal injector, overload protection, pocket-size, low cost. Dimensions: 5" X 2 29/32" W X 1"D. Weight 4.5 oz.
This is the True and Correct Compound Bar, in which 2 metals of unequal co-efficient of expansion are used to show unequal expansion. Consists of 2 strips, brass and steel riveted together from end to end fitted to a wooden handle. On heating, the joined strips bend in a particular direction thereby showing unequal expansion. Instructions included.
This is the True and Correct Compound Bar, in which 2 metals of unequal co-efficient of expansion are used to show unequal expansion. Consists of 2 strips, brass and steel riveted together from end to end fitted to a wooden handle. On heating, the joined strips bend in a particular direction thereby showing unequal expansion. Instructions included.
ANSI Class 2 lime vest. 100% polyester mesh. Hook & loop front closure. Tape backed contrasting trim. 3 interior pockets - 2 open and 1 pen compartment. Conforms to ANSI/ISEA 107 standard for design, color and reflectivity. Available in 3XL only.
ANSI Class 2 lime vest. 100% polyester mesh. Hook & loop front closure. Tape backed contrasting trim. 3 interior pockets - 2 open and 1 pen compartment. Conforms to ANSI/ISEA 107 standard for design, color and reflectivity. Available in Large only.
ANSI Class 2 orange vest. 100% polyester mesh. Hook & loop front closure. Tape backed contrasting trim. 3 interior pockets - 2 open and 1 pen compartment. Conforms to ANSI/ISEA 107 standard for design, color and reflectivity.
Made of polypropylene and can hold 10 standard 1" x 3" microscope slides back to back. The interior is grooved in a way to hold the slides in an erect position. Jar features domed and shallow thread screw cap.
Battery charged electro-magnetic mobile with perpetually moving forms. 9 1/4" high. One 9V battery required.
Battery charged electro-magnetic mobile with perpetually moving forms. 9 1/4" high. One 9V battery required.
Designed to allow specimens to remain in the tray between dissecting periods. The clear plastic cover snaps firmly to the pan to prevent excessive moisture loss. Cover specimens up to 3" high.
The clear plastic covers snap firmly to the pans to prevent excessive moisture loss. Covers specimens up to 3" high.
The clear plastic covers snap firmly to the pans to prevent excessive moisture loss. Covers specimens up to 3" high.
This model of a plant cell splits in half to provide a cross-section view and make learning the parts of a plant cell easy. One half of the colorful foam model is labeled with the parts of the cell, and the other is labeled with letters only. Included Activity Guide provides detailed information on plant cells. Ages 7-11.