When is a bicycle wheel a gyroscope? When you put a new "spin" on it. Give our bicycle wheel a spin, then try to tilt or deflect it. Our student-sized bicycle wheel turns freely on its axis and has large, comfortable handles at each end. Because mass is concentrated at the rim, you can tilt the spinning wheel to feel the force of rotation. With instructions.
When is a bicycle wheel a gyroscope? When you put a new "spin" on it. Give our bicycle wheel a spin, then try to tilt or deflect it. Our student-sized bicycle wheel turns freely on its axis and has large, comfortable handles at each end. Because mass is concentrated at the rim, you can tilt the spinning wheel to feel the force of rotation. With instructions.
A big, durable 8" high magnet. Horseshoe-shaped plastic handle is easy to grip for even the youngest hands. Ages 3 and up.
Penicillium, Coprinus, Spirogyra vegetative and conjugating, Pediastrum, bacteria 3 shapes, Moss male head, Pine life, Onion mitosis, Corn stem, Lilac leaf, pollen, Lily ovary, Paramecium, Amoeba proteus, Grantia spicules, Hydra, Planaria, letter "e", Trichinella, Daphnia, Cartilage hyaline, frog and human blood and skin.
Penicillium, Coprinus, Spirogyra vegetative and conjugating, Pediastrum, bacteria 3 shapes, Moss male head, Pine life, Onion mitosis, Corn stem, Lilac leaf, pollen, Lily ovary, Paramecium, Amoeba proteus, Grantia spicules, Hydra, Planaria, letter "e", Trichinella, Daphnia, Cartilage hyaline, frog and human blood and skin.
24" x 36" full color laminated poster.
This is an especially important poster because it presents the new Sibley-Ahlquist bird classification system. Based on recent DNA studies, this system uses cladistics to reconstruct the evolutionary family tree. Who would have thought that birds as diverse as flamingos, eagles, and penguins would end up in the same clade? However, this revolutionary new system has been widely accepted by North American ornithologists and has made the previous bird classification system obsolete. Although this poster shows true clades, the scientific community continues to use the order names, which are cited.
This is a truly beautiful poster, one greatly appreciated by bird lovers. It certainly enhances the decor of their home or office, yet it presents information that has even greater value. All the bird clades are explored, and all of the many classification changes resulting from the transition from orders to clades are explained. This information has never before been published in such a concise and convenient form, making this poster an essential reference for anyone seriously interested in birds.
24" x 36" full color laminated poster. This is an especially important poster because it presents the new Sibley-Ahlquist bird classification system. Based on recent DNA studies, this system uses cladistics to reconstruct the evolutionary family tree. Who would have thought that birds as diverse as flamingos, eagles, and penguins would end up in the same clade? However, this revolutionary new system has been widely accepted by North American ornithologists and has made the previous bird classification system obsolete. Although this poster shows true clades, the scientific community continues to use the order names, which are cited. This is a truly beautiful poster, one greatly appreciated by bird lovers. It certainly enhances the decor of their home or office, yet it presents information that has even greater value. All the bird clades are explored, and all of the many classification changes resulting from the transition from orders to clades are explained. This information has never before been published in such a concise and convenient form, making this poster an essential reference for anyone seriously interested in birds.
• 100% polyester 300D oxford with PU coating.
• Zipper closure with snapped storm flap.
• 100% black polyester fleece liner.
• Left interior chest pocket.
• Two exterior slash pockets with rain guard.
• Detachable and stowable hood.
• Mic tabs on both shoulders.
• Adjustable cuffs.
ANSI Class 3. Polyester 300D oxford with PU coating. 100% Black polyester fleece lining. Zipper & snap front closure. Detachable and stowable hood. 2 exterior slash pockets with rain guard, 1 interior chest pocket. Mic tabs on both sides. Waterproof. Conforms to ANSI/ISEA 107 for design, color & reflectivity.
Acid resisting sheeting, very flexible and lightweight. Accepted as a standard lab apron for years. Cut to provide ample comfort and protection from laboratory reagents. Reinforced at points of strain. Cotton tapes at waist and neck. 27" x 36".
Acid resisting sheeting, very flexible and lightweight. Accepted as a standard lab apron for years. Cut to provide ample comfort and protection from laboratory reagents. Reinforced at points of strain. Cotton tapes at waist and neck. 27" x 36".
• iCards are 8-1/2" x 11", double sided dry erase board
• Designed specifically to work with iCard Holders
• Sold in a set of 6
• iCard Holders sold Separately
Index of refraction plate, made from acrylic. Polished surfaces.
This acrylic 115 x 65 x 20mm rectangular block is designed for use as an index of refraction plate, and has a polished surface.
Index of refraction plate, made from acrylic. Polished surfaces.
This acrylic 125 x 65 x 20mm rectangular block is designed for use as an index of refraction plate, and has a polished surface.
ANSI Compliant, High Visibility Insulated Jacket with Removable Liner
The removable quilted liner system provides warmth, comfort and versatility for varying weather and work conditions.
Ideal Applications: For use in environments where high visibility and warmth are desired for wearer safety and comfort.
• ANSI/ISEA 107 Type R Class 3 compliant, 100% waterproof, jacket for high visibility.
• Fluorescent yellow-green background material for excellent daytime visibility.
• 2 inch silver reflective tape reflects light for 360º nighttime conspicuity.
• 140 gram removable black quilted polyester liner provides warmth, and can be worn as a stand alone work jacket.
• Shell is made of 210 denier polyester for great wear.
• There are 5 exterior and 3 interior pockets in the shell, while the liner jacket has 2 exterior pockets for added convenience.
• Overhead shoulder design for complete freedom of movement.
• Storm fly front and zipper front closure seal out wind and rain.
• Roll-a-way hood in collar for your convenience.
• Front hand warmer pockets with closure.
• Left breast radio pocket with flap closure.
• Elasticized cuffs and waist for comfortable fit.
• Dark colored front helps conceal dirt.
• Stitched and taped seams for 100% waterproof protection.
• 2 Mic Tabs
ANSI Compliant High Visibility Insulated Jacket.
A highly visible insulated winter wear jacket designed to provide warmth, comfort and safety at an affordable price.
Ideal Applications: For use in environments where high visibility and warmth are desired for wearer safety and comfort.
• ANSI/ISEA 107 Type R Class 3 compliant, 100% waterproof, jacket for high visibility.
• Loaded with premium features for multipurpose applications.
• Fluorescent yellow-green background material for excellent daytime visibility.
• Quilted polyester lining provides warmth and comfort.
• 210 denier polyester shell for great wear.
• 2 inch silver reflective tape reflects light for 360° nighttime conspicuity.
• 5 exterior and 3 interior pockets for added convenience.
• Overhead shoulder design for complete freedom of movement.
• Storm fly front and zipper front closure seal out wind and rain.
• Roll-a-way hood in collar for your convenience.
• Slash front pockets with closure.
• Left breast radio pocket with flap closure.
• Elasticized cuffs and waist for comfortable fit.
• Dark colored front helps conceal dirt.
• Stitched and taped seams for 100% waterproof protection.
ANSI Compliant High Visibility Insulated Jacket
A highly visible insulated winter wear jacket designed to provide warmth, comfort and safety at an affordable price.
Ideal Applications: For use in environments where high visibility and warmth are desired for wearer safety and comfort.
• ANSI/ISEA 107 Type R Class 3 compliant, 100% waterproof, jacket for high visibility.
• Loaded with premium features for multipurpose applications.
• Fluorescent orange-red background material for excellent daytime visibility.
• Quilted polyester lining provides warmth and comfort.
• 210 denier polyester shell for great wear.
• 2 inch silver reflective tape reflects light for 360° nighttime conspicuity.
• 5 exterior and 3 interior pockets for added convenience.
• Overhead shoulder design for complete freedom of movement.
• Storm fly front and zipper front closure seal out wind and rain.
• Roll-a-way hood in collar for your convenience.
• Slash front pockets with closure.
• Left breast radio pocket with flap closure.
• Elasticized cuffs and waist for comfortable fit.
• Dark colored front helps conceal dirt.
• Stitched and taped seams for 100% waterproof protection.
Premium ANSI Compliant High Visibility Insulated Jacket. Made to provide superior warmth, comfort, and safety in the harshest conditions.
Ideal Applications: For use in environments where high visibility and warmth are desired for wearer safety and comfort.
Made to provide superior warmth, comfort, and safety in the harshest conditions
Ideal Applications: For use in environments where high visibility and warmth are desired for wearer safety and comfort.
• ANSI/ISEA 107 Type R Class 3 compliant, 100% waterproof, jacket for high visibility.
• Loaded with premium features for multipurpose applications.
• Fluorescent yellow-green background material for excellent daytime visibility.
• Fleece body lining and quilted polyester sleeve lining provide warmth and comfort.
• 300 denier polyester shell for excellent durability and performance.
• 2 inch silver reflective tape reflects light for 360° nighttime conspicuity.
• 5 exterior and 3 interior pockets for added convenience.
• Overhead shoulder design for complete freedom of movement.
• Storm fly front and zipper front closure seal out wind and rain.
• Roll-a-way hood in collar for your convenience.
• Front hand warmer pockets with closure.
• Left breast radio pocket with flap closure.
• Heavy duty stretch knit cuffs and waist for comfortable fit.
• Dark colored front helps conceal dirt.
• Stitched and taped seams for 100% waterproof protection.
• Waterproof underarm zipper vents to help reduce heat and moisture.
• 2 Mic Tabs.
This model shows the remarkable process by which a seed turns into a plant. Your students can learn more about plants by using the Roots model, also in this series. Grades K-8.
These colorful teaching models are designed specifically for hands-on use with young children. Made of resilient, non-toxic, EVA foam, the removable pieces stimulate problem-solving skills and develop small motor skills. Every model is accompanied by a reproducible activity card containing background information and extension ideas. teachers can cut out the task card and use it in learning center or as a group activity. This model shows the remarkable process by which a seed turns into a plant. Your students can learn more about plants by using the Roots model, also in this series. Grades K-8.
These colorful teaching models are designed specifically for hands-on use with young children. Made of resilient, non-toxic, EVA foam, the removable pieces stimulate problem-solving skills and develop small motor skills. Every model is accompanied by a reproducible activity card containing background information and extension ideas. teachers can cut out the task card and use it in learning center or as a group activity. This teaching model is designed to introduce students to the "life and times" of the ant. It illustrates the major stages of the life cycle and the ants extensive social life. Grades K-6.
These colorful teaching models are designed specifically for hands-on use with young children. Made of resilient, non-toxic, EVA foam, the removable pieces stimulate problem-solving skills and develop small motor skills. Every model is accompanied by a reproducible activity card containing background information and extension ideas. teachers can cut out the task card and use it in learning center or as a group activity. This teaching model is designed to introduce students to what happens inside a chicken egg. It illustrates three major stages of the chick's development, and encourages students to explore how chicks change as they grow. Grades K-8.
These colorful teaching models are designed specifically for hands-on use with young children. Made of resilient, non-toxic, EVA foam, the removable pieces stimulate problem-solving skills and develop small motor skills. Every model is accompanied by a reproducible activity card containing background information and extension ideas. teachers can cut out the task card and use it in learning center or as a group activity. These teaching models are designed to introduce students to lifecycles. The models illustrate the major stages of the life cycle, and encourage students to explore how these living things change as they grow. Grades K-8.
The Earth Science Book Plus Series provides colorful teaching models and reproducible activity cards that teach children about earth science. The models are made of resilient, non-toxic, EVA foam, with removable pieces that stimulate problem-solving skills and develop small motor skills. The book covers contain background information, activities and extension ideas. Teachers can cut out the task card and use it in a learning center or as a group activity. The models are 10" x 14.5" x 3/4" thick.The Water Cycle model illustrates precipitation, evaporation, condensation and runoff. It shows that water is constantly reused and recycled and also illustrates how clouds are formed. Available in French. Grades K 6.
Borosilicate glass. Uniform thickness.
This is a standard borosilicate glass funnel with uniform thickness. The top outer diameter measures 54mm and the stem measures 50mm. Glass funnels are mostly inert and make it easier to pour without making a mess.
Glassware is manufactured from low alkali Type 3.3 borosilicate glass. It is virtually free of magnesia-lime-zinc group and is completely free of arsenic and other heavy metals.
• Made with 0.35mm thick PVC and polyester fabric
• Detachable hood with drawstring
• Storm flap front with snap closure
• 2 flapped front pockets with snap closures to secure valuables
• Cape vented back
• Corduroy collar for comfort
• Adjustable suspenders for with triangular buckles for a perfect fit
• Front fly opening with snap
• Light to medium duty.
• Applications: Crossing guards, survey crews, law enforcement, ranching, and forestry.
• Available with or without CROSSING GUARD emblem on back
Heavy duty .35mm PVC on polyester broadloom fabric offers long term durability. Complete 3-piece suit includes jacket (with corduroy collar and cape vented back), detachable hood and bib pants. Available in 4 sizes with or without CROSSING GUARD Emblem on back.
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.
Standard large diaphragm. Used for blood pressure readings and to detect heart and chest sounds.
Standard large diaphragm. Used for blood pressure readings and to detect heart and chest sounds.
Set of 8 related 35mm images photographed through a microscope called photomicrographs. Arrows and call outs help the student locate important features. The film is mounted in a clear plastic holder that protects it on both sides. Each Microslide is accompanied by a detailed lesson plan designed to stimulate, inform and question students about the topic under study. Each lesson plan has a pocket in which the Microslide is stored. Lesson plans are printed on heavy tag stock and will serve for repeated use. Box of 10 Microslides.
Set of 8 related 35mm images photographed through a microscope called photomicrographs. Arrows and call outs help the student locate important features. The film is mounted in a clear plastic holder that protects it on both sides. Each Microslide is accompanied by a detailed lesson plan designed to stimulate, inform and question students about the topic under study. Each lesson plan has a pocket in which the Microslide is stored. Lesson plans are printed on heavy tag stock and will serve for repeated use. Box of 10 Microslides.