This durable traffic sign is constructed of baked enamel nonrusting heavy gauge aluminum and is designed to provide many years of outdoor use. Sign measure 12" x 18".
Loved by kids for more than 20 years, this best seller got better! Perform astounding feats of magnetism as you playfully explor magnetic forces, motion, and stability. Integrates geometry and art too discuss shapes, positions, planes, symmetry, and more. Fourth edition includes additional coins plus a whopping 44 activities. Ages 8+/Grades 3+. Set includes: 2 super strong magnets encased in stainless steel, 32 newly-minted British pennies plus a bonus US penny, and an activity booklet packed with magnet facts, penny history, and 44 activities.
Dowling Magnets Electromagnet science kit is ideal for ages 10 - 14 and is used to teach the kids about the magnetic effects. Kit is ideal to build a doorbell and a telegraph system.. - Helps in building a doorbell, telegraph system and even a catapult all using a true electromagnet. - Includes disc, latch and neodymium magnets, compass, straws, wires, sandpaper, switch plates, wood screws, nails, light bulbs, battery holders, iron filings, pre-drilled wood blocks, LED, instruction book. - Electromagnet science kit for grade 5th - 8th helps in building a doorbell, telegraph system and even a catapult all using a true electromagnet.
Built to withstand the demands of the toughest environments, the ChainBoss can be used both indoors and outdoors. Made in the United States, the ChainBoss is equipped with features perfect for safely controlling crowds, directing the flow of foot traffic, or protecting a closed area for construction or cleaning. The ChainBoss features patented Integrated Chain Storage system so chain is stored inside the post when not in use for incredible convenience. Then, easily pull the chain out of the post using the twist-lock top which allows for easy chain disbursement. Each 37.88-inch tall post includes 10 feet of all-weather molded, high-tensile strength 2-inch black plastic chain. The ChainBoss features a durable, scratch-resistant high-density polyethylene base that can be user filled with sand or gravel. On the bottom of the base are no-skid, non-marking rubber feet keeping the post in place even during rough use. No tools are required for assembly. The Easy Connect snap together construction between the post and base takes less than 5 seconds and is easy as 1, 2, 3.
• Durable, crowd-control barrier for outdoor/indoor use
• Feature SunShield 10 Year UV protection
• 3-inch diameter post features patented Integrated Chain Storage system
• Each post can hold 10 feet of all-weather, high tensile strength 2-inch plastic chain
• Made in the USA
• High density polyethylene base can be user filled with sand or gravel
• Fast assembly and no tools required with Easy Connect snap together connection
Huge, metal construction. Baked shoving hammertone finish. Shows that pressure of a liquid depends on the depth/height.
Huge, metal construction. Baked shoving hammertone finish. Shows that pressure of a liquid depends on the depth/height.
Bourdon type mounted on brass pillar with nozzles for in and out connections 3/8" O.D. Heavy cast iron base for stability. Calibrated 0-30 inches of Hg / 0-750mm of Hg. Used for Vacuum Experiments.
Bourdon type mounted on brass pillar with nozzles for in and out connections 3/8" O.D. Heavy cast iron base for stability. Calibrated 0-30 inches of Hg / 0-750mm of Hg. Used for Vacuum Experiments.
This pump features a painted steel barrel, steel valve assembly, and a wooden handle. Both in and out ports are equipped with hose connectors, for use with vacuum experiments as well as to generate pressure. Length 14", barrel diameter 1", shipping weight 1 lb.
This pump features a painted steel barrel, steel valve assembly, and a wooden handle. Both in and out ports are equipped with hose connectors, for use with vacuum experiments as well as to generate pressure. Length 14", barrel diameter 1", shipping weight 1 lb.
Heavy duty glass bell jar, ideal for studying the properties of matter under a vacuum or for isolating experiments from outside interference. The wall thickness is approximately 6mm.The dome's measurements are taken from the inside. Fixed Knob.
Heavy duty glass bell jar, ideal for studying the properties of matter under a vacuum or for isolating experiments from outside interference. The wall thickness is approximately 6mm.The dome's measurements are taken from the inside. Fixed Knob.
Set includes two helical springs and a length of cotton string. The long narrow spring measures 3/4" x 72", and can be extended to 5 meters. Larger spring measures 3" x 4". Can be extended many times its length without distortion. Includes activity guide. Shipping weight: 2.5 lbs.
Set includes two helical springs and a length of cotton string. The long narrow spring measures 3/4" x 72", and can be extended to 5 meters. Larger spring measures 3" x 4". Can be extended many times its length without distortion. Includes activity guide. Shipping weight: 2.5 lbs.
• For 70 years, made in the U.S.A. with over 300 million sold worldwide
• Stretches like an accordion, bounces and walks down steps
• Made of metal for long lasting wiggly jiggly fun
• Comes boxed and perfect for presents, party favors, Easter baskets, grab bags, prizes and stocking stuffers
• Recommended for children 5 years of age and older
For 70 years, made in the U.S.A. with over 300 million sold worldwide. Stretches like an accordion, bounces and walks down steps. Made of metal for long lasting wiggly jiggly fun. Comes boxed and perfect for presents, party favors, Easter baskets, grab bags, prizes and stocking stuffers. Recommended for children 5 years of age and older
For demonstrating longitudinal and transverse wave motion. Consists of a number of eccentric aluminum discs supporting a series of metal rods, joined to a handle. On revolving the handle, simulation of waves can be obtained on the rods running in a metal guide. Mounted on a nicely polished wooden case.
For demonstrating longitudinal and transverse wave motion. Consists of a number of eccentric aluminum discs supporting a series of metal rods, joined to a handle. On revolving the handle, simulation of waves can be obtained on the rods running in a metal guide. Mounted on a nicely polished wooden case.
Encased in a transparent acrylic case which allows full view of the movement. The action can be demonstrated with the help of a rubber bellow which increases the pressure when squeezed. Supplied complete with rubber bellow.
Consists of a large "U" shape tube 50 cm in length, with both ends long enough to connect to rubber tubing, mounted on a sturdy wooden base. Large enough for classroom demonstration. Entire unit mounted on heavy metal base.
Consists of a large "U" shape tube 50 cm in length, with both ends long enough to connect to rubber tubing, mounted on a sturdy wooden base. Large enough for classroom demonstration. Entire unit mounted on heavy metal base.
Consists of four glass tubes of different shapes projecting vertically from a common horizontal tube, mounted on a stand. To demonstrate the principle that in connected vessels, the liquid rises to the same level irrespective of the shape of the vessel. All glass parts are made from Borosilicate Glass.
Consists of four glass tubes of different shapes projecting vertically from a common horizontal tube, mounted on a stand. To demonstrate the principle that in connected vessels, the liquid rises to the same level irrespective of the shape of the vessel. All glass parts are made from Borosilicate Glass.
Just attach a discarded plastic soda bottle to each end of the Tornado Tube, one with water, one empty. Stand the empty bottle on a flat surface, as the water begins to flow down from the full bottle, a vortex will descend from the top with an amazing similarity to a tornado. Bottles not included.
Economical, great for students. Consists of two 3 inch Diameter rubber suction cups. No vacuum pump needed. To demonstrate Atmospheric Pressure.
Economical, great for students. Consists of two 3 inch Diameter rubber suction cups. No vacuum pump needed. To demonstrate Atmospheric Pressure.
Discover basic pneumatic/hydraulic principles using syringes, tubing, valves, and a variety of found materials. The Teacher's guide provides several design-and-make activities including a pump, car jack, extension grabbing arm, and dual hinged arm. All of the materials needed to build these models are provided, including corroplast, JAX clips, tuning, and syringes.
Discover basic pneumatic/hydraulic principles using syringes, tubing, valves, and a variety of found materials. The Teacher's guide provides several design-and-make activities including a pump, car jack, extension grabbing arm, and dual hinged arm. All of the materials needed to build these models are provided, including corroplast, JAX clips, tuning, and syringes.
The Intro Kit is ideal for introducing students to the concepts of changing force by levers and pulleys, and the notion of mechanical advantage. The manual describes experiments with three types of levers, single and double pulley systems, and shows the characteristics of each machine. Set includes: 1 lever with centimeter scale, 2 pulleys, 1 spring scale, 2 weight hangers, 1 slotted weight set, 1 base and support rod, 1 support rod with clamp, 2 hook collars, 1 pulley cord, 1 manual and disc.
The Intro Kit is ideal for introducing students to the concepts of changing force by levers and pulleys, and the notion of mechanical advantage. The manual describes experiments with three types of levers, single and double pulley systems, and shows the characteristics of each machine. Set includes: 1 lever with centimeter scale, 2 pulleys, 1 spring scale, 2 weight hangers, 1 slotted weight set, 1 base and support rod, 1 support rod with clamp, 2 hook collars, 1 pulley cord, 1 manual and disc.
Neodymium (NdFeB) is the most powerful magnet material in the world. Neodymium is classified as an element in the lanthanides section of the Periodic Table. These are the super strong magnets you have heard about that can attract through your hand.
Neodymium (NdFeB) is the most powerful magnet material in the world. Neodymium is classified as an element in the lanthanides section of the Periodic Table. These are the super strong magnets you have heard about that can attract through your hand.
Same as 16260, but does not include the Multimeters.
Same as 16260, but does not include the Multimeters.
Neodymium (NdFeB) is the most powerful magnet material in the world. Neodymium is classified as an element in the lanthanides section of the Periodic Table. These are the super strong magnets you have heard about that can attract through your hand.
Strong Alnico 1 Cylindrical Magnets, shipped in pairs, with separators and keepers. North pole marked with a dot.