Crystals are fascinating creations of natural beauty. Diamonds, gemstones, rose quartz, snowflakes, sugar grains, and table salt are all crystals. Grow your own crystals and explore these exquisitely ordered structures in a fun, creative way with six crafty experiments. This kit includes five different chemicals and other tools for growing crystals. Grow a crystal cloud inside a rainbow. Watch pink iridescent crystals form from a translucent solution. Grow long needle-shaped crystals. Mold plaster hearts and flowers and then grow a layer of pink crystals on them. Create the perfect solution to get crystals to form on a granite rock. A specially designed experiment station provides molds and growing basins for your crystal creations. After you have grown your crystals, store them safely in three clear, locking display boxes. Learn how and why crystals form, and tips and tricks for getting the biggest, most beautiful crystals. Full-color, 16-page experiment manual.
Light weight but strong. Soft nylon net attached to a metal frame 10" (250mm) dia. The net is about 11" (280mm) deep. Telescopic handle 0.85" (22mm) thick, extends from 18" (460mm) to 30" (770mm), twist of the handle locks and unlocks the handle at varying lengths.
Serves to demonstrate Boyle's Law. Shows what happens when gases are subjected to increased pressure. The plastic syringe, with solid wood base and platen, is constructed so that the calibrations denoting interior volume read right side up. As masses of bricks, books, or other heavy objects are increased, the gas in the syringe is compressed to smaller and smaller volume. The kit includes: 1 Syringe Cylinder w/ Cap, 1 Syringe Piston, 1 Base, 1 Platen.
Serves to demonstrate Boyle's Law. Shows what happens when gases are subjected to increased pressure. The plastic syringe, with solid wood base and platen, is constructed so that the calibrations denoting interior volume read right side up. As masses of bricks, books, or other heavy objects are increased, the gas in the syringe is compressed to smaller and smaller volume. The kit includes: 1 Syringe Cylinder w/ Cap, 1 Syringe Piston, 1 Base, 1 Platen.
To demonstrate convection of heat in liquids. Rectangular glass tube 200 x 150mm sides and 22mm in diameter with a built in funnel for easy pouring in of the liquid. Made from Borosilicate Glass. Instructions included.
To demonstrate convection of heat in liquids. Rectangular glass tube 200 x 150mm sides and 22mm in diameter with a built in funnel for easy pouring in of the liquid. Made from Borosilicate Glass. Instructions included.
Perfect for counting, measuring and patterning. Plastic 1 cm cubes in 10 colors come in a storage tub with Activity Guide. Grades 1 +
This set of 500 Centimeter cubes is perfect for counting, measuring and patterning. Plastic 1 cm cubes in 10 colors come in a storage tub with Activity Guide. Grades 1 +
For 22mm-25mm tubes. Holds 30 tubes. 44 drying pins Great visibility and very compact. Constructed of polyethylene, is autoclavable and extremely stable. Size is about 10" x 4" x 3".
A creative way for children to learn astronomy concepts. Players toss the 24" ball to each other and call out the answers to the problem found under their left thumb. Many variations of play! Includes a list of game suggestions with directions and answers! For grades 4-8.
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.
For introducing the concept that friction depends on the nature and smoothness of materials. The kit consists of three wooden blocks, L x W, 100mm x 70mm, with hooks. One with a highly polished side, second with a sandpaper side and third with an aluminum side. Complete with a polished wooden base about, L x W, 355mm x 70mm. Instructions included.
For introducing the concept that friction depends on the nature and smoothness of materials. The kit consists of three wooden blocks, L x W, 100mm x 70mm, with hooks. One with a highly polished side, second with a sandpaper side and third with an aluminum side. Complete with a polished wooden base about, L x W, 355mm x 70mm. Instructions included.
Illustrates linear and spherical expansion by heating and contraction by cooling. Mild steel bar 110x12.5mm, length x diameter. Mounted on a rod with wooden handle and a brass gauge 150x38mm with a cutout mounted on a separate wooden handle which just admits the bar lengthways and a hole into which the bar passes endways when cold.
Illustrates linear and spherical expansion by heating and contraction by cooling. Mild steel bar 110x12.5mm, length x diameter. Mounted on a rod with wooden handle and a brass gauge 150x38mm with a cutout mounted on a separate wooden handle which just admits the bar lengthways and a hole into which the bar passes endways when cold.
Metal construction. With sliding plate glass front. Two glass chimneys. Candle holder is mounted in the box.
Metal construction. With sliding plate glass front. Two glass chimneys. Candle holder is mounted in the box.
Demonstrates expansion of metals with heat.
Demonstrates expansion of metals with heat.
Strong all metal construction, can be mounted on a table up to 2" (50mm) thick. Aluminum Pulley, 1.125" (300m) diameter, mounted on a vertically height adjustable bracket, which can slide up and down, and can be tightened at any point, from being parallel to the clamping surface, up to 2" (50mm) higher to the clamping surface.
Strong all metal construction, can be mounted on a table up to 2" (50mm) thick. Aluminum Pulley, 1.125" (300m) diameter, mounted on a vertically height adjustable bracket, which can slide up and down, and can be tightened at any point, from being parallel to the clamping surface, up to 2" (50mm) higher to the clamping surface.
6 cm in diameter. Supplied with supported base with socket at top end for holding the gyroscope and demonstrating various principles.
6 cm in diameter. Supplied with supported base with socket at top end for holding the gyroscope and demonstrating various principles.
This robustly constructed inertia demonstrator works reliably every time and is a great improvement on traditional versions of this classic experiment. A steel ball rests on a thin metal card on top of a pillar, and a spring-loaded catch is mounted next to the pillar. When the catch is released, a piston strikes the edge of the metal card sharply. The card flies out from under the ball, which remains in place on top of the pillar due to its large inertial mass. The card is tethered to the aluminum base for easy recovery after the experiment.
This robustly constructed inertia demonstrator works reliably every time and is a great improvement on traditional versions of this classic experiment. A steel ball rests on a thin metal card on top of a pillar, and a spring-loaded catch is mounted next to the pillar. When the catch is released, a piston strikes the edge of the metal card sharply. The card flies out from under the ball, which remains in place on top of the pillar due to its large inertial mass. The card is tethered to the aluminum base for easy recovery after the experiment.
The design of the Spillnot uses the principles of Newtonian physics to keep the liquid in the container. The flexible handle and location of the suspension point above the center of the tray ensure that the forces on the liquid are always directed toward the supporting tray, even when the tray is in motion. Sideways forces usually responsible for spills are not transmitted to the tray by the flexible handle. Radial forces generated during swinging motion only force the liquid into the container more firmly. An inexpensive demonstration to intrigue students and challenge their analytical powers! Includes activity guide. 5" x 5" x 9". Weight: .25 lbs.
The design of the Spillnot uses the principles of Newtonian physics to keep the liquid in the container. The flexible handle and location of the suspension point above the center of the tray ensure that the forces on the liquid are always directed toward the supporting tray, even when the tray is in motion. Sideways forces usually responsible for spills are not transmitted to the tray by the flexible handle. Radial forces generated during swinging motion only force the liquid into the container more firmly. An inexpensive demonstration to intrigue students and challenge their analytical powers! Includes activity guide. 5" x 5" x 9". Weight: .25 lbs.
For demonstrating Hooke's Law and for studying simple harmonic motion of vibrating weight suspended from spring and potential energy. It consists of a heavy base with an adjustable mirror millimeter scale, a spiral spring with indicator and weight hanger. Complete with four 50g slotted weights. Instructions included.
For demonstrating Hooke's Law and for studying simple harmonic motion of vibrating weight suspended from spring and potential energy. It consists of a heavy base with an adjustable mirror millimeter scale, a spiral spring with indicator and weight hanger. Complete with four 50g slotted weights. Instructions included.
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.
Newton's Second Law of Motion. Demonstrates inertia.
Newton's Second Law of Motion. Demonstrates inertia.
Demonstrates the principle of Archimedes. Consists of two pieces: cylinder and close fitting bucket. All brass construction. 50mm long.
Demonstrates the principle of Archimedes. Consists of two pieces: cylinder and close fitting bucket. All brass construction. 50mm long.
Aluminum, brass, copper, and steel. 50mm x 12.5 mm.
Aluminum, brass, copper, and steel. 50mm x 12.5 mm.
Strong wooden frame, with hinged cover. Slides fit into numbered beveled slots. Printed index lines the cover.
Strong wooden frame, with hinged cover. Slides fit into numbered beveled slots. Printed index lines the cover.
Strong wooden frame, with hinged cover. Slides fit into numbered beveled slots. Printed index lines the cover.
Strong wooden frame, with hinged cover. Slides fit into numbered beveled slots. Printed index lines the cover.
Bacteria (bacillus) gram - (negative) Bacteria (bacillus) gram + (positive) Chromosome (female) in Giemsa Chromosome (male) in Giemsa Mitosis; stages of plant Mitosis
Bacteria (bacillus) gram - (negative) Bacteria (bacillus) gram + (positive) Chromosome (female) in Giemsa Chromosome (male) in Giemsa Mitosis; stages of plant Mitosis