This concise introduction to the life of the past as revealed through fossils, is an invaluable and enjoyable guide which includes:
• Descriptions of the typical plants and animals of major geological eras
• Maps showing where fossils can be found
• The history of the development of life on earth
• Full-color illustrations
Life of the past as revealed through fossils. 481 illustrations.
This guide describes and illustrates, in full color, the plants and animals that live in or near ponds, lakes, streams, and wetlands. It includes surface-dwelling creatures as well as those of open water, the bottom, and the shore and tells how various animals and plants live together in a community.
Plus suggestions for:
• Where and when to look
• Observing and collecting specimens
• Making exciting discoveries
Maximum clarity, unsurpassed quality and corrosion resistant. Thickness No. 0. There are approx 125 22mm x 22mm coverslips per ounce.
Maximum clarity, unsurpassed quality and corrosion resistant. Thickness No. 0. There are approx 125 22mm x 22mm coverslips per ounce.
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.
Blood typing has always been and important biology exercise introducing a variety of key areas including immunology. Mainly genetics, blood banking, and forensics. Concern over Aids along with a general trend away from invasive" laboratory work has, for many schools, resulted in the elimination of this vital exercise. The ABO Blood Simutype Kit solves all of these problems. Using artificial bloods and sera that simulate actual blood typing, students follow exactly the procedure that would be used to type a blood specimen and obtain results that closely approximate real blood typing. Each student determines the type of one blood sample, A,B,O, and AB types are all included. From their results, students use genetic consideration to settle paternity questions. They also determine possible blood doners for each blood type.
Blood typing has always been and important biology exercise introducing a variety of key areas including immunology. Mainly genetics, blood banking, and forensics. Concern over Aids along with a general trend away from invasive" laboratory work has, for many schools, resulted in the elimination of this vital exercise. The ABO Blood Simutype Kit solves all of these problems. Using artificial bloods and sera that simulate actual blood typing, students follow exactly the procedure that would be used to type a blood specimen and obtain results that closely approximate real blood typing. Each student determines the type of one blood sample, A,B,O, and AB types are all included. From their results, students use genetic consideration to settle paternity questions. They also determine possible blood doners for each blood type.
A dependable manometer designed for regular blood pressure checks. 300mm dial. Complete with self closing Velcro cuff inflation system. In zipper pouch. Requires separate stethoscope.
A dependable manometer designed for regular blood pressure checks. 300mm dial. Complete with self closing Velcro cuff inflation system. In zipper pouch. Requires separate stethoscope.
This is the Traditional Scale of Hardness Collection and a Test Kit. Includes Streak Plate, Penny, Glass Plates, Nail and nine specimens 1" x 1.5" number coded. Grades 6-12. Ages 11-18.
This is the Traditional Scale of Hardness Collection and a Test Kit. Includes Streak Plate, Penny, Glass Plates, Nail and nine specimens 1" x 1.5" number coded. Grades 6-12. Ages 11-18.
Compare and contrast the physical properties of streak and color in this 8 specimen mineral collection. Numbered specimens are approximately 1 x 1.5". Streak plate and key sheet included. Grades 5-12. Ages 10-18. Ages 10-18.
Compare and contrast the physical properties of streak and color in this 8 specimen mineral collection. Numbered specimens are approximately 1 x 1.5". Streak plate and key sheet included. Grades 5-12. Ages 10-18. Ages 10-18.
The specimens in this collection represent minerals rare and beautiful enough to be prized as gemstones. Included are specimens of study grade beryl, topaz, rose quartz, turquoise, olivine, corundum, garnet, tourmaline and more. 15 specimens approximately 1" x 1" in a compartmented tray. Grades 6-12. Ages 11-18.
Contains 15 representative metamorphic rock specimens, each approximately 1.5" x 1.5", number-coded in a compartmented container. Grades 5-12. Ages 10-18.
Washington Student Collection Designed to accompany the Washington School Collection. 40 unlabeled chips in a zip-lock storage bag.
Washington Student Collection Designed to accompany the Washington School Collection. 40 unlabeled chips in a zip-lock storage bag.
The 21 plastic fossils and detailed Laboratory Manual in this kit will let your students become practicing paleontologists. Kit conveys importance of fossil study to investigations in geology, history, mapping, and stratigraphic correlation. Grades 7-12.
Study of the chemical composition of toothpastes. Students evaluate several toothpastes for percent of solids, pH, foam formation, abrasive action, specific substances. They use this data to make judgments about their effectiveness. Materials for 12 pairs of students. Grades 7-12.
Limewater solution is commonly used for testing the presence of carbon dioxide in gaseous samples in school laboratories, and refining of sugar in a process called carbonatation. 4 liters.
Limewater solution is commonly used for testing the presence of carbon dioxide in gaseous samples in school laboratories, and refining of sugar in a process called carbonatation. 1 liter.
2,6-Dichloroindophenol Sodium salt (indophenol), reagent - 1g
Non-nutrient agar powder is typically used in classrooms for microbiology experiments, such as studying slime molds, observing fungal growth, or culturing environmental samples. Since it lacks nutrients, it does not support the growth of most bacteria or fungi on its own, making it ideal for experiments where a nutrient source is added selectively to encourage the growth of specific organisms. It's often used to highlight the effects of environmental factors on microbial growth, demonstrate the role of external nutrient sources, or as a base for investigating other biological processes.
An economy model planetarium. Moon, Earth and Venus globes are rotated, revolved separately by hand. The twilight zone ring enables young students to better understand the nature of dawn and dusk. Underarm chain drive keeps the North Pole pointing to Polaris, the North Star. Durable, colorful plastic with brass and steel parts. Complete quality planetarium at a low price.