
Newton would have killed for this, but you can have it in your classroom for a song. Our high-quality composition-of-light unit is designed to demonstrate the nature of light wavelengths. A trio of tubes with red, green and blue LEDs inside have converging lenses, in turn mounted in swiveling holders. Sturdy, heavy-duty plastic construction through-out. It's powered by an included 4 "D" cell battery pack (Batteries, not included.). Has individual switches and brightness controls for each color, plus a 6-1/2" x 7-1/2" mounted white screen for display, plus a handy instruction sheet.
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93487 RED, GREEN AND BLUE LED LIGHT DEMONSTRATOR |
Periodic table of the elements nicely presented as a 3-hole-punched 8-1/4" x 11" insert for a looseleaf notebook. It's a double-sided trifold with peripheral information, including instructions on how to read the chart. A brightly colored and useful reference for everyone from teachers to chemists.
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88638 PERIODIC TABLE |
Good across the occupational spectrum, from visual artists to physics teachers-this full-service color paddle set comes with red, blue, green, cyan, magenta, and yellow gels; (2) diffraction grating gels-(1) at 13.5 lines/inch, double axis, and (1) 500 lines/mm; (2) polarizing filters; and (1) translucent white diffusing filter with 63% transmission. All gels and filters are 2-1/8" x 2-5/8" in cardboard frames 5-7/8" long, and there's a built-in spectral transmission chart for primary and secondary colors. Made in the USA.
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92683 COLOR PADDLE |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Yes, you already make your own molecules, but these will be large enough to see with the naked eye from the back of the class. Our EduSci molecular demo set has (35) atoms (20mm/.78-inch plastic balls in 7 assorted colors) and (30) little steel springs (1", 1-1/8" and 1-1/2" long) to bond the atoms together, just like the real thing, all in a compact wooden storage box. Includes an experiment guide.
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94321 EDUSCI MOLECULAR DEMONSTRATION KIT |
Way inside? Try our human X-rays. These are from Roylco® and are very useful for biology teachers, but with lots of other applications. Make a very easy oversized jigsaw puzzle or, with some super glue, a great shower curtain. But the real possibilities are for artists and designers: fold ’em into lampshades, blow them up or shrink them on a copier, or scan them and have fun in Photoshop™. You get the human skeletal system, a complete skeleton when assembled, in (18) sheets of various sizes, reprinted on transparencies which work with overhead projectors. Info sheets in English and French.
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92654 HUMAN X-RAYS |
Our little white-plastic balance pan measures 3-1/4" ID x 1-3/8" at its deepest and comes with a 4-1/8" x 3" clear plastic hanger with a 1-3/8" S-hook. You provide the fulcrum and lever.
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40568 3-1/4" PLASTIC BALANCE PAN |
And extremely detailed. These classroom anatomical posters from Lippincot Williams and Wilkins are full color on heavy coated stock, and of very high quality. They're all 26" high x 20" wide.
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88402 POSTER, BRAIN | |
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88405 POSTER, DIGESTIVE | |
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88407 POSTER, EAR | |
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88404 POSTER, EYE | |
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88401 POSTER, HEART | |
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88398 POSTER, MUSCULAR | |
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88400 POSTER, NERVES | |
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88397 POSTER, SKELETAL | |
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88403 POSTER, TEETH | |
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88399 POSTER, VASCULAR |
Learn geometry, or learn to build the world’s coolest sand castles. Our each is a set of (4) geometric shapes in brightly colored transparent plastic. The set of (4) includes a 3–7/8” cube, a 3–7/8” x 3–7/8” x 1–15/16” rectangular box, a 3-7/8" dia x 3-7/8" cone and a pyramid with a 3–7/8” sq base. All shapes are open on the bottom, the better to get the sand into them. And out of them.
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31712 SET OF 4 SHAPES |
Even the person who has everything doesn't have full-color posters of ulcers and cancers! Then again, some people don't throw anything away. The 20" x 29" ulcer poster illustrates different types, while the 20" x 26" cancer poster illustrates different treatments. Both are from 1985. Great gift idea.
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90179 CANCER POSTER | |
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90165 ULCER POSTER |
Bunsen-Dibdin photometer box for mounting on a meter stick. Normally used in a physics lab together with light sources that also mount on the stick, you could rig up your own lights and have a complete lab experiment set. Cenco #86445, it is often sold as a replacement item. No instructions.
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30287 PHOTOMETER BOX |
Y columna vertebral. Y the bones, fractures and dislocations associated with them. All the text on these 26” x 20” slightly glossy anatomical charts featuring the shoulder, elbow and spinal column is in Spanish. If you want them for a classroom or a doctor’s office, better get them fast, before they sell out as funky wall art.
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31715 SPANISH CHART, ARM | |
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31716 SPANISH CHART, BACK |
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