Will adapt to blade sizes 20-23, Forged steel, comes with one blade (No. 22).
Weather project worksheets. For individual student use with wall chart. Pad of 50 sheets, 8 1/2" x 11".
Weather project worksheets. For individual student use with wall chart. Pad of 50 sheets, 8 1/2" x 11".
Expand student's understanding of energy costs with this model of a passive solar house. The 11" x 11" x 8" model comes with a detailed Teacher's Guide containing activities in basic science, solar energy, and energy conservation. Grades 3-9.
Expand student's understanding of energy costs with this model of a passive solar house. The 11" x 11" x 8" model comes with a detailed Teacher's Guide containing activities in basic science, solar energy, and energy conservation. Grades 3-9.
All you need is water, a little sunshine and imagination for hours of fun making photographic type prints, available in 2 sizes. 4" x 4", 10 sheets, 1 acrylic plate and instructions in a lightproof envelope.
Contains 4" x 4" sheets of sunprint paper and an acrylic overlay. This acrylic overlay helps press objects such as leaves flat in contact with the paper to insure a good print.
Developed by educators at the Lawrence Hall of Science, Sunprints encourage an interest in the photographic process using only sun, water, and a bit of imagination.
Place a leaf, flower, or other object on the special paper and set it in the sun briefly.
Then rinse the paper in water and watch as a beautiful long-lasting image appears.
Super Stripe Traffic Paint is heavy-duty and lays miles of lines so you get more stripes per dollar. One case will give you about 2,400 linear feet of bright crisp 3" lines. Perfect for parking lots, floors and safety zones. 12 cans/case.
50 specimens approximately 1-1/2". Includes industrial minerals, gem-type minerals, rock-forming minerals and igneous, sedimentary and metamorphic rocks plus Study Guide. Grades 5-12. Ages 10-18.
50 specimens approximately 1-1/2". Includes industrial minerals, gem-type minerals, rock-forming minerals and igneous, sedimentary and metamorphic rocks plus Study Guide. Grades 5-12. Ages 10-18.
The surface mounted Fixed Base is designed for permanent applications, and secures the upright with cap screws and washers. The bases can be mechanically fixed to surfaces with the SS212P Anchor Kit (See below).
Dimensions: 8” x 8” x 1”
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.
• Measures 32” x 42” and includes:
• 2-sided 24” x 36” white Write-On/Wash-Off™ sign face
• Set of 4 markers (red, blue, green, black).
The Swinger Sidewalk Changeable Sign is the ultimate outdoor sign offering versatility, affordability, portability and easy assembly - all with sleek, contemporary design that commands attention with it’s gentle swinging motion. Swinger sidewalk signs are made from rust-proof technopolymers with internal steel supports for durability and stability in rainy or windy conditions. It’s narrow 24” profile easily fits through any door.
Automatically turns on at 30 degrees, 60 degrees, or 90 degrees angles. Never needs calibration. 3 second update. Range: -50 degrees to 150 degrees Celsius
• Rapidly removes Graffiti and Tagging Obscenities!
• Safe, Bio-degradable, Non-toxic, Non-Caustic and Non-Flammable!
• Will Not Run Off Vertical Surface!
• Originally developed for Public Works Departments and State DOT’S
Works on:
• Street Safety Signs
• Bridges
• Restroom Privacy Panels
• Tile
• Metal, Brick, and Sided Buildings
• Plastic Playground Equipment
• Concrete Walls
• Railroad Cars
• Trees
• Rocks
First Impressions are lasting Impressions! If you are responsible for removing graffiti, you know how frustrating and expensive this task can be. Whether you are a governmental agency, a facility manager or a maintenance supervisor and you need to remove a simple declaration of love or a gang symbol, using TAGSTER will solve your problem. TAGSTER is extremely versatile and can be used on variety of different surfaces like metal, concrete, wood, and plastic. TAGSTER was originally developed for Public Works Departments and State DOT’S who have been plagued for years by vandals that spray paint, obscenities, crude language and declarations of love on buildings, equipment, traffic signs, restrooms, playground equipment and bridge embankments.
Pulley is high-quality impact-resistant, chip-proof injection molded, balanced wheel. Smooth, clean V-groove. Wheel diameter 2", 360 degrees swivel hooks-top and bottom. All steel blocks.
This apparatus is used to demonstrate and teach the basic principle of an electric meter. Apparatus consists of a 3.75" (90mm) dia. air coil wound on an acrylic tube with an acrylic plate in the center to hold a compass. The coil has multiple tappings of 50, 100 and 200 turns, and also has a built-in potentiometer for varying the current, these features allow multiple readings. Operates on one "AA" battery (not included). Includes one compass. Base 7.34" (195mm) x 4.75" (120mm) x 0.5" (12mm). Total height 4.25" (110mm).
Easy wind-up tapes are marked in inches and feet on one side and mm and cm on the other. Durable casing for years of use.
Our stethoscopes have adjustable, chrome plated binaurals, and PVC Y-tubing. Good quality, and economical.
A unique hands-on science teaching aid that is visually exciting to students. Students are able to watch what they see and read in a science book happen right before their eyes. The Teaching Tank is approximately 12" x 12" x 1/2" and can be easily dismantled and cleaned with mild soap and water.
This expansion kit will allow teachers, parents, and students the opportunity to turn their original Teaching Tank into a small aquarium in about two minutes. With this wider tank, a whole new variety of experiments can now be completed.
Made of polypropylene, this autoclavable, unbreakable and non-corrosive basket is ideal for rinsing and draining glassware. It's also useful for storage of test tubes or culture tubes during sterilization or incubation. Dimensions 160mm x 160mm x 160mm.
White nylon test tube brush. Radial end. 9" long.
White nylon test tube brush. Radial end. 9" long.
Self-closing with rectangular jaw made of brass wire. 5" long. Will hold up to 1" diameter tubes (25mm)
Self-closing with rectangular jaw made of brass wire. 5" long. Will hold up to 1" diameter tubes (25mm)
• Set up your lab and learn how to safely handle lab equipment and chemicals
• Professional quality equipment helps you make the most of your experiments
• Learn about indicators with litmus solution and write a message in invisible ink.
• Experiment with air pressure, surface tension, and physical properties of fluids
• Get exposure to a broad range of chemical phenomena
• Provides clear instructions, explanations, and asks and answers questions
• Thorough safety precautions and instructions ensure safe experimentation.
• 80-page, full-color experiment manual
• 125 diverse experiments.
• Ages 10 and up.
Enroll in CHEM C1000 and prepare for a lifetime of fascination with this essential science through 125 diverse experiments. Start with an introduction to the field of chemistry and famous chemists. Set up your lab space and learn how to safely handle the lab equipment and chemicals. Learn about indicators with litmus solution and write a secret message in invisible ink. Test the inks from your colored markers on the chromatography racetrack to reveal their different color components. Experiment with air pressure, surface tension, and the physical properties of fluids. Experiment with two well-known metals, iron and copper. Investigate carbon dioxide. Dissolve metals with electrochemical reactions. Explore water and its elements, saturated and unsaturated solutions, and crystals. Split water into hydrogen and oxygen with electrolysis, and form oxygen from hydrogen peroxide. Experiment with soaps, detergents, and emulsions of water and oil. Investigate chemistry in the kitchen by experimenting with sugar, honey, starch, eggs and proteins, fatty acids, and calcium. Begin to build a strong foundation in chemistry with exposure to a broad range of chemical phenomena and hands-on laboratory experiences. This kit provides clear instructions for preparing and performing the experiments, offers safety advice, offers explanations for the observed occurrences, and asks and answers questions about the results. Thorough safety precautions and instructions ensure safe experimentation. Professional quality equipment helps you make the most of your chemistry experiments. The 80-page, full-color experiment manual guides aspiring young chemists through each of the 125 experiments. Ages 10 and up.
• Understand the remarkable reactions behind ordinary occurrences.
• Professional quality equipment helps you make the most of your chemistry experiments.
• This kit introduces you to the alcohol burner for experiments that require heat.
• The 128-page, full-color manual
• 250 experiments
• Provides clear instructions for preparing and performing the experiments and explains the results.
• Ages 11 and up.
Discover how fascinating the world is when you understand the remarkable reactions behind ordinary occurrences. CHEM C2000 includes everything in CHEM C1000 and more — with twice the tools and materials, and more than three times the experiments. Most notably, this kit introduces you to the alcohol burner for experiments that require heat, greatly expanding the number of experiments you can conduct. Experiment with filtering and separating mixtures, combustion, and electrochemical reactions. Learn how to work with indicators and stronger acids and bases. Explore elements and compounds, including the chemical and physical properties of water, carbon dioxide, oxygen, hydrogen, and carbon. Discover atoms and molecules. Inspect soaps and household cleaners. Experiment with various foods from the kitchen to learn about sugars, fats, and proteins. Investigate metals such as iron, copper, and aluminum. Learn about how chemistry is used in environmental protection and industry. After completing CHEM C2000, you will have experienced firsthand the most important topics in chemistry, creating an excellent foundation for later study of chemical equations and atomic structure. The 128-page, full-color manual guides aspiring young chemists through 250 experiments. The manual provides clear instructions for preparing and performing the experiments and explains the results. Thorough safety precautions and instructions ensure safe experimentation. Professional quality equipment helps you make the most of your chemistry experiments. Ages 11 and up.