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Area Template, Fold-up, 1 Square Meter
| High school scientists need scientific data on which to base their conclusions. Now it’s easy to quantify the results of a field study with our folding sampling square. |
| High school scientists need scientific data on which to base their conclusions. Now it’s easy to quantify the results of a field study with our folding sampling square. |
| The folding sampling square cleanly and quickly marks off a quarter or half meter squared. Place it in front of a large kick net when you’re sampling for macrobenthos in a stream. Kick up the stream bed in the area marked out. When you know how many “critters” can be found in an area - you can extrapolate for the length of the stream. |
| The sampling square “explodes” open due to the use of a durable shock cord inside the PVC pipe legs. Connects are made with T-connectors which allow the frame to sink. Includes: two-dimensional square formed connected with two T-connectors; shock cord inside pipe legs; instructions. |
Where We Are in Space and Time; Activity Book
Activity Book: Where We Are in Space and Time Twenty-one hands-on activities are included in this 176-page spiral-bound book. Students can write answers or do calculations right in the book. Some pages can be cut out. Each activity has a list of required materials, most of which are available in this catalog. Includes a glossary and a key to identifying objects on the photographic plates. The activities are spanided into 3 units: |
| Observing and Measuring Astronomical Time Measuring Astronomical Distances using Triangles Measuring Astronomical Distances using Apparent Brightness |
| This 48-page addendum to Where We Are in Space and Time, gives answers to the homework questions and problems, and offers suggestions on how to approach each activity. Black and white prints are included to be used as masters. |
2D Magnetic Field Demonstrator
Wow your students with this handy magnetic field demonstration! Shake the unit so that the iron filings are distributed throughout the unit. This transparent acrylic case holds iron filings in such a way as to maximize the visible lines of force from a magnet placed either on top of or underneath the case. Note: Magnets not included.
3-D Constellation Kit
| 3-D Constellation Kit Explore the stars of the Big Dipper and Orion! These photographic plates — six different views of the celestial sphere — were taken with a telescope that has a focal length of 22 inches so they should be viewed from 22 inches away to appear the same size as they look in the sky. Fluorescent orange beads are strung to the plates at their proper distance to simulate the stars, demonstrating to students that not all of the stars in a constellation are the same distance from earth. Constellations include Orion, Ursa Major, Taurus, Cassiopeia, Gemini, and Sagittarius. One to six students can simultaneously complete one portion of the sky (each using one plate). The kit includes: 250 beads (1/8") |
| • 1 spool of black thread • 6 photo plates of constellations • 10 washers • 1 set of instructions & activities. |
Accent Air Pressure Kit
Finally! Everything you need to teach air pressure all in one kit. Comes with Magdeburg Hemispheres, Weight of Air Apparatus, Vacuum Lifter, Pressure Cups, Breaking Board Apparatus, Hand Vacuum Pump, and instructions.
Accent Water Cycle Lab
Each complete kit helps teach all parts of the water cycle-solid, liquid, and gas. The kit is meant for up to 32 students (8 groups of 4). Included in the kit are: teacher pages, student instruction pages, and student journal pages. The kit is tied into Benchmarks for Science Literacy and National Science Education Standards. Grades K-8.
The kit includes the following materials:
16 thermometers, 8 aluminum cans, 16 sample containers, 8 plastic plates, sponge, and spoon.
Accent What is Density? Kit
What is Density, anyway? With this colorful kit, you can easily help your students grasp this concept in a non-mathematical way. By constructing cubes made from magic dough, toothpicks and blue foam floats, you can show how changing the "compactness" of the design influences the cubes' "floatability" when placed in a tray full of water.
Kit includes:
(12) cans of magic dough, (1) box of toothpicks, (300) blue foam squares, (12) clear plastic containers, (1) Density Identification Kit, and instructions
Air Convection Kit
This metal box houses two plastic candle chimneys. When the candle is lit and placed beneath one of the chimneys, a piece of touch or smoke paper will clearly show convection currents. Air heated by a candle moves up one chimney while cooler air moves down the other chimney to replace the lost air. A transparent front panel allows the entire demonstration to be seen.
Aluminum Sinker
| What fits a graduated cylinder like a hand in a glove? Our aluminum sinker with hook. This aluminum rod is the perfect size to fit your graduated cylinder. We include a handy brass hook to raise and lower it, when heated, with tongs. Good price - many uses in lab. |
Aquatic Invertebrate Lab Kit Class Set/12
| Everything you need to sort through the samples you collect from the bottom of streams, lakes, and ponds. Use in the field to measure and identify the organisms you collect and return them to their habitat, or bring your pre-rinsed samples back to the lab for sorting. |
| Sampling Kit contains: |
| •Twelve (12) Small white "critter pickin (TM)" pans (182-F20) |
| •Twelve (12) Forceps (7905-T10) |
| •Sink sieves (184-A15), pack of 6 |
| •Plastic vials (7912-P50), quantity of 48 |
| •Twelve (12) Clear plastic rulers (039030) for measuring specimens |
| •Twelve (12) Hand Lenses (78-520) |
| •Teasing needles (7905-T24), pack of 12 |
| •Set of comprehensive teacher instructions |
| •Twelve (12) Insect ID sheet (039020) with instructions |
Base with Stand
Our ring stand features a 4 x 6" base (10 x 15 cm) with an 11" rod (28 cm) that screws securely into it. The base and the support rod are made from steel. The support rod is a standard 3/8" diameter (9.5 mm). The base is powder coated black and the support rod is chrome plated to resist rust.
Basic Orienteering Kit
| This basic orienteering kit is perfect for an introduction to compasses and directions. The kit allows a teacher to demonstrate using an oversize display compass, while the students have accurate liquid filled compasses.. The detailed teacher instructions include many activities including: learning the parts of a compass, learning directions, finding your way, string course, finding a landmark, using maps, and hidden treasure games. |
| Equipment is provided for 12 students (or 24 student pairs).The following items are included in the Orienteering Kit: (1) Teacher Demonstration Compass (12) Student Compasses (1) Card Set (N,S,E,W) (1) Detailed Teacher Instructions The large Teacher Demonstration Compass is non-functional so that the needle and dial stay in place when it is held up for the group to see. It is clear so it can be used on an overhead projector. The Student Compasses are for use in the Northern Hemisphere. They come with a lanyard and are graduated 0 to 360 degrees in 2 degree intervals. Each has a liquid-filled capsule, declination correction scale, luminous points, and an acrylic base. The base has a 4x magnifier. Additional compasses may be ordered. |
Bell in Vacuum
Nature, of course, abhors a vacuum - and sound waves won't travel through one. Prove it with a ringing bell inside a sealed glass jar. As air is gradually pumped out of the jar, the bell becomes faint, then dies. Includes jar, vacuum plate with valve, rubber seal, bell system, and instructions. You need a vacuum pump and 2 AA batteries, not included. Bell may be removed for other vacuum experiments. The inside height is 8 inches, and the diameter is 8 inches.
Bourdon Gauge
The Bourdon Gauge is used for vacuum experiments. It features a 100 mm dial and pressure readings can be taken from 0 - 140 kPa.
Breaking Board Apparatus
Don't know your own strength? It's entirely possible. Lay our thin slab of wood on a smooth surface with newsprint over half of it. When you strike the slab, what happens? Due to its large surface area, the inertia of the air is sufficient to hold the board in place. The board breaks rather than sliding away. Includes enough wood for 10 experiments; instructions. You need newsprint.
Calibrated Transect Line
Handy, sturdy 20 m line, calibrated every meter.
Celestial Globe
| Our transparent, four color Celestial Globe is perfect for identifying stars and constellations. A 75mm earth globe is mounted within the center of the 300mm sky globe and can be rotated to align a position on the ground with a position in the sky. |
| The 3D format allows students to conceptualize their position from the outside in, giving a greater understanding of the movements of the earth relative to the starfield. Perfect for grades 4-12. |
Celestial Globe, 16
| This 16" diameter clear acrylic celestial globe is unique in many features that place it far above other such globes. All of the stars are printed on the inside of the globe so that your eyes are drawn to the yellow dots (representing the stars) on the far side of the globe. This unique feature enables the viewer to see the stars, constellations, and other celestial objects in the same left right orientation that they appear in the night sky. Clear printing in four colors is helpful in reading the information on the globe. Star dots were specifically designed to be significantly different in size so that they are easily determined without the aid of measurements. |
| A 5-3/4" transparent acrylic Earth ball inside the sphere assists in orienting the viewer who is located on the Earth. A yellow sun ball moves 360° along the ecliptic to set the date when using the globe. The blue horizon ring is large enough and close enough to the celestial sphere to assist in delineating the area of the star field that can be seen from any location on the earth on any date and any time. |
| The Explorer Celestial Globe is not only highly educational, but also an attractive display piece for any home or office. This globe has been in production by Trippensee for over 30 years. An extensive instruction book, Trippensee Transparent Celestial Globes, is included with this model. Shipping weight 30lbs (oversize). |
Celestial Sphere Kits
| Recommended for astronomy and earth science at the junior high school through college level. Celestial Sphere Kit With the celestial sphere, students are able to model the apparent daily motions of the stars and the sun for a variety of latitudes and for any day of the year. The activity includes data that the students can use to see that the seasons are not caused by the distance between the earth and the sun. The activities and sphere will help with using the sky for navigation and explaining the cause of seasons on the earth. They can experiment with the sky in the laboratory and at home. The kit includes (10 of each unless noted): 20 clear plastic hemispheres |
| • star charts with the 500 brightest stars for north and south hemispheres • pens to mark stars on the inside surface of each hemisphere • earth space globes (1-inch diameter) • pins to represent the sun • Styrofoam bases • wooden dowels for the axis • plastic straws for support • 1 set of instructions & activities. |
Clear Overflow Can
Our new 480 mL clear overflow can is a great addition to your lab bench. It is a lightweight, clear plastic displacement vessel with an angled spout to prevent spillback.
It is constructed in one piece to eliminate leakage. This unit is used for accurate measurements of density, specific gravity and volume . It measures 10 cm tall x 9 cm diameter.
Current Balance PSSC
Show the force a magnetic field exerts on a current carrying wire. Use this effect to measure the strength of the magnetic field at the center of a solenoid.
This accessory can be added to the Air Core Solenoid to measure the force experience by a conducting loop carrying an electric current when it is placed in a magnetic field.
The kit consists of the following items:
16.5 cm balanced, printed conductive blade, bounded by a conducting loop, that is wired to two conducting axles and two alligator clips which are used to connect the device to the Air Core Solenoid.
Deluxe Air Track, 1.5M
Here's a great value in a student air track. Study one-dimensional motion, collisions, and the conservation of momentum at low friction. Our sturdy triangular aluminum extrusion track is lightweight yet durable and can be used without a support stand. 1.5 meters in length, it has a smooth surface and high linearity due to precision machining. Two rows of air holes are spaced 2.4 cm apart. Full length metric tape is placed on the track with a guide groove for spark paper.
Includes: Two 300 g gliders and one 150 g gliders, assembled and calibrated to 1 gram rubber band glider launcher and end pulley (for acceleration with constant force experiments) Coil springs (for harmonic motion experiments) Bumper springs (for elastic collision experiments) Velcro connectors (for inelastic collision experiments) Photogate triggers Mountable masses Instruction manual Accessory carry case and more!
Deluxe Loop de Loop
This high quality Loop de Loop apparatus easily demonstrates the transformation of potential energy to kinetic energy. Use the built in ruler to measure the distance the ball has dropped from its starting point at the top. Measurements are in centimeters. Device comes with two balls and a sturdy wooden base. Also, the Loop de Loop features a two-sided back drop plastic disk that allows for measurements in degrees or cm when the ball traverses the loop.
Density Ball
Our 30-166 density ball is used demonstrate the effects of temperature and mineral content on density. The metal ball will float in cold water, and sink in hot!
The density of water is not constant but depends upon several factors. The effects of salinity and temperature play a large role in the flow of earth's ocean currents. The 30-166 Denstity Ball can be used by varying salt content as well as temperature, to show the effects on density.
Density Cube Sets
| Here are handy, low-cost sets of one-inch cubes that can be used in many experiments. What makes them unusual? They offer an array of materials we actually use today. Learn about density, mass, volume, buoynacy, specific gravity and flotation while experimenting with real-world building materials. Grades 6-8 and up. Our Density Cube Sets have long been popular because they meet curriculum standards. At a teacher's suggestion, we've just improved upon our largest set. We've added two new cubes (for a total of twelve): polypropylene and lignum vitae (ironwood).The twelve piece set also includes a handy storage case. Polypropylene floats in water, although because it is dense plastic, your students would expect it to sink. Lignum Vitae sinks in water, but because it is wood, your students would expect it to float. Lignum Vitae is three times harder than oak. One of the hardest and heaviest woods in the world, it has a specific gravity of 1.05 and a density of 77-82 lbs/ft3. |
| 30-152 Density Cubes Set of 12 includes: Lignum Vitae, Polypropylene, Aluminum, Oak, Steel, Nylon, Brass, Pine, Copper, Poplar, Acrylic, PVC, Instructions, and Storage Case. |
| 30-161 Density Cubes Set of 10 includes: Aluminum, Oak, Steel, Nylon, Brass, Pine, Copper, Poplar, Acrylic, PVC, Instructions. |
| 30-020 Density Cubes Set of 4 with Hooks includes: Aluminum, Steel, Zinc, Brass, Instructions. |
| 30-005 Density Cubes Set of 4 without Hooks includes: Aluminum, Steel, Copper, Brass, Instructions. |
Density Experimentation Kit
Density Experimentation Kit
Our density lab kit contains 3 different density sample cylinders, an overflow can, a catchbucket, a spring scale, and instructions.
Density of Solids Cylinders Set
| Use this set to determine the specific gravity of a material by graphical methods. |
| • The set consists of four (4) samples of each of eight different materials, arranged in a binary weighting sequence, with each weight double its predecessor (1/8, 1/4, 1/2 and 1” long). This means that 15 inspanidual determinations of specific gravity can be made. These results are plotted on a graph, the slope of which is the specific gravity of the material. |
| • Includes: Eight (8) different materials in sets of four (4) masses; sturdy weight hanger that can be used for all samples; instructions with worksheets by Dr. A.Z.M. Ismail, PhD. Materials include aluminum, copper, delrin (black), bronze, brass, teflon (white), PVC (grey) and stainless steel. |
Density Rod Kits
| 30-160 Density Rod: What floats in cold water, sinks in hot? Our precisely calibrated cylinder - that's what! It demonstrates the differing density of a liquid at different temperatures. Illustrated instructions. Consists of a durable hollow aluminum cylinder (6.5 cm long and 1.9 cm in diameter) that fits most graduated cylinders. Instructions with experiments. Good for middle school. Wt: 3 oz. |
| 30-162 Reverse Density Rod: Everyone knows water gets less dense as it gets warmer. Then why does this rod sink in cold yet float in less dense hot water? The answer lies in the fact that the density of the rod also changes with temperature. The rod becomes much less dense at higher temperatures. It wins the “race” against the heated water and floats, whereas the aluminum rod sinks.Contains: High-density polyethylene plastic rod, 1/2” in diameter, weighted and tested; instructions with theory. |
dice set of 60 30 six sided and 30 ten sided
Diving Bell
Underwater exploration has fascinated us since we first started sailing the seas. The spaning bell in one form or another has allowed us to breathe under water. Used by such notables as Alexander the Great, Bernoulli and Pascal, it is essentially a submerged container filled with air, the air pressure holding the water at bay. Our simplified demo contains a bell, syringe, connecting tube and instructions. First draw the air out with the syringe; then place the ball in water and watch it sink. When you inject air slowly back into the ball, it rises.
Double Cone & Plane
Defy gravity as our cone appears to roll upward. This visual demonstrator of the center of gravity consists of a wooden frame with spanerging rails and a double-ended cone. The cone appears to roll upward; in actuality, it is the center of mass that is moving downward.
Drinking Bird
Demonstrate the relationship between pressure and temperature with our classic 15-070 Drinking Bird!
The laws of physics come alive when our low pressure glass bird dips his head for another drink. He will keep on drinking until he can no longer wet his beak. As the water evaporates from his head, the cooler part of his glass body draws the liquid up to his head. This makes him tip down for another drink.
MSDS available upon request, contains dichloromethane.
Dynamic Microphone
Unidirectional microphone, features include: 9 foot cord, 1/4? (6.3mm) adaptor, 1/8? (3.5mm) adaptor and on-off switch.
Dynamics Carts Three-Wheel
Demonstrate basic acceleration, conservation of momentum, and elastic and inelastic collisions. Carts are 600 grams each and have three low friction wheels. The carts are stackable and include "no slip" top and velcro for illustrating non-elastic collisions. The carts can be loaded with bricks or other weights to change the cart's mass or two or three carts can be stacked together.
Kit consists of: (2) dynamics carts fully assembled and ready for use and instructions.
For safety in the classroom and during storage, the firing shaft can be locked to make firing impossible.
Earth Globe Ornament
| Holiday Special! Display the Planet Earth; turn your tree into a planetarium. |
| Give the world this Christmas with our holiday globe ornament. This little plastic globe displays the world at a 1 : 150,000,000 scale! The complete modern world is portrayed on a 3.5 inch hanging ornament. This planet earth features labels of country names, latitudinal lines, longitudinal lines, continents, oceans, and more. The features are set against a blue backdrop to increase clarity. |
| Order yours while quantities last. |
Electric Calorimeter
Our simple electric calorimeter helps you to determine the electrical equivalent of heat. It features a removable spring heating element that operates on 0 to 6 V DC. The unit consists of an aluminum outer can, a 1.7 cm thick styrofoam lining, plastic insulator ring and aluminum heat reservoir designed to control heat loss. The lid accepts heating element, stirrer and thermometer. Cover cap included.
Electric Field Apparatus
Our Electric Field Apparatus is designed to show the lines of an electric field produced by a large electrostatic charge, such as the one generated by a Van de Graaf Generator or Wimshurst Machine.
The cost effective apparatus is great for classroom use because it can be placed on an overhead projector for viewing by an entire class.
Included:
(1) electric field apparatus (plastic petri dish on acrylic base with feet and terminal pillars), (1) bottle of castor oil, (1) packet of iron filings, (2) point charges, (2) charged plates and instructions
Energy Transformation Kit
| Have a "smashing" good time converting mechanical energy to heat. |
| Bet you never knew converting mechanical energy to heat energy could be so - in a word - entertaining. Merely striking our two precision machined balls together will create enough heat at the point of contact to burn a hole in a sheet of paper. You'll see no flame, but a charred hole appears instantly along with a smell of burning paper. Why? The First Law of Thermodynamics states, "Energy can neither be created nor destroyed." In other words, it merely changes its form - in this case, from mechanical energy (striking two balls together) to heat (evidenced by the hole burned in the paper). |
| How to use: 1. Put on safety glasses. 2. Have a helper hold a piece of paper in the air. 3. Hold a ball in each hand. From opposite directions, strike the paper with both balls. The balls should collide head-on with enough force to burn a hole in the paper. 4. If no burn hole appears, try again. The balls must move quickly and must hit each other squarely. |
| Kit includes: |
| •Two precision machined 454 gram balls, hardened with chrome-plated steel. |
| •Instructions with historical perspective. |
| Meets National Science Education Standards and Benchmarks for Science Literacy! |
Equal Mass Set
This convenient 5-piece set demonstrates the inverse relationship between density and length for cylinders of the same mass and diameter. Includes: 5 machine-turned specimens with the same diameter (12 mm) but varying lengths. Also includes instructions with lab activities.
Equal Volume Mixed Materials
Experiment with volume and density with our set of spanerse materials.
Our four cylinders of aluminum, glass, nylon and wood each have the same volume. 13mm x 7.5cm.
Exploring Mystery of Tower
| Make the center of gravity the center of attention with this complete and intriguing class kit! |
| You can't bring the Leaning Tower of Pisa into your classroom. But you can determine what keeps it from falling! With the help of this comprehensive kit, the mathematical concept of the "center of gravity" can be observed, moved, and measured. Since its construction in 1173 AD, the Leaning Tower of Pisa has been a graphic symbol of unstable structure. Now you can build your own leaning tower and study what exactly makes it topple - when. This kit consists of six (6) Leaning Tower of Pisa sets and six (6) protractors, enough for an entire classroom. Each set contains a center shaft and four cylinders to stack on top of each other. Each cylinder has a different density - two are metal, two are plastic. How far do you need to tilt the tower before it collapses? Which combinations are most stable? |
| Meets National Science Educational Standards and Benchmarks for Science Literacy. |
| • Experimentally determine the center of gravity of a structure |
| • Observe how the location of the center of gravity changes with changing mass distribution |
| • Explore how the location of the center of gravity affects structure stability |
Fire Syringe
| Our 15-110 Science First Fire Syringe is a classic example of the Ideal Gas Law (PV=nRT). By compressing air into a smaller volume, we are also increasing the temperature. Looking at the formula, a large increase in P, a small decrease in V, with n and R being constant, leads to a large increase in T. |
| • Kit includes: aluminum piston, lexan piston chamber, and 2 custom made o-rings. You will also need to supply tiny pieces of non-moisturized tissue paper. |
| • Setup: The setup is quick and easy. Pull out the syringe, drop in 3-4 tiny 5 mm or so tissue pieces. Then re-insert the aluminum piston gently so that it just enters the mouth of the piston chamber. Holding the unit flat on a non-slip surface, push down the aluminum piston with some force and speed. You will see a quick flask of fire, which will last until all available oxygen is used up. |
| • How it works: Air gets very hot when compressed under high pressure. If you have ever pumped up a bicycle tire, you have noticed the heat generated. When the air in the fire syringe is compressed, it is done so fast and efficiently, so that it can reach a temperature of over 260 degrees C (500 degrees F). As paper burns at 235 dgrees C (454 degrees F), the small pieces of tissue paper ignite. |
| • Maintenance: Your syringe has been pre-lubricated and should not need any more. After each use, blow out the carbon dust from the small fire you just made and it is good to use again. |
Foam Insect Spreading Board
This styrofoam spreading board is ideal for butterflies and other specimen sizes because it features five grooves ranging in width from 1/8" to 5/8". The deep grooves allow for accurate positioning of specimens using any length of pins.
The board size is as follows: 11"L x 17"W x 1 3/4" thick.
Friction Box / Mass Holder
Use this wood box to determine the coefficient of friction with loads. High quality wood box features an open top, ring at one end and a non-slip bottom. 15 x 9 x 8 cm in size.
Friction Cube
Show how different frictional characteristics affect the force required to move a stationary body. The friction cube includes 4 different surfaces on a two inch wood cube. The friction cube comes with a hook on one side for towing against inclined panes and other surfaces.
The four surfaces are:
Sandpaper
Vinyl
Paper
Wood
Gas Law Demonstrator
| New! The discovery of the Gas Laws goes back aways - to 1662, to be exact. But it needn’t take a few centuries to understand the concepts. Despite the deceptive simplicity of our design, you can verify both Boyles’ Law and Charles Law to a high degree of accuracy. To prove it, we’ve provided sample data in our instructions. |
| This set contains a syringe; two wood blocks for Boyles Law experiments; one wood block with two holes for performing Charles Law experiment. |
Gaussian Linear Accelerator
What happens when you align powerful neodymium magnets on a linear rail and arrange steel balls in a sequence? A fun and intriguing demonstration of Newtonian physics. When properly arranged, a slow moving steel ball will be accelerated to 3-4 times its original speed by the pull of magnets and Newton's Third Law of Motion. How is this possible? As a ball approaches the powerful magnet, it is accelerated into that magnet, but on the other side of the magnet there are two balls in a row. The impact of that ball kicks off the farthest ball on the other side just like Newton's Cradle. The released ball however has the energy of the magnetic acceleration propelling it faster than the original ball. This is possible because it begins its journey already a ball away from the original magnet. When this motion happens four times in a row, there is enough velocity built up to shoot a ball across a room!
The 40-165 comes with 4 neodymium magnets, 4 magnet holders which allow the user to move the magnets and reverse their polarity towards one another. Ten 3/4" steel balls, and a low friction track with an open end for launching the balls. This device can be used to teach magnetism, motion, Newton's Laws, and can be used as a fun ball launcher for other experiments and demonstrations.
Gay-Lussac's Law and Absolute Zero
Extrapolate to Absolute Zero using this handy apparatus. The bulb can be submerged in boiling water, ice water, and liquid nitrogen--to give three widely spread points on a temperature versus pressure graph, which can be extrapolated to give an indication of Absolute Zero. Thermometer and beaker not included.
Genetic Dice Kit
| Simulate the color of pea plants in Gregor Mendel's garden to investigate recessive genes. |
| An Austrian monk named Gregor Mendel was watching his garden grow in the mid-1800s. He became intrigued by diffences in traits of his pea plants, such as shapes of pods, color of the peas, color of the pods and heights of the plants. Some traits seemed to occur more frequently in the ten years he observed his plants. His discovery can be called the "Law of Independent Assortment" - the nature of dominant and recessive genes. |
| In sexual reproduction - be it in plants or people - each parent passes on half their genes to their offspring. Which half is a chance occurrence and had lead to all the spanersity we can see around us. Whether you're tall or short - or yellow or green in color - can seem like a roll of the dice, for instance. |
| With our unique kit, it is a roll of the dice. Dice that you construct, label, color and roll. |
| Kit contains: |
| • Two perforated four-sided dice diagrams on sturdy card stock with interlocking tabs |
| • Green and yellow colored pencils |
| • Comprehensive instructions including Student Journal pages |
| Applications: |
| •Create Punnett sqaures for one-trait crosses •Discover the ratios for dominant versus recessive traits •Make predictions based on these ratios |
| Meets National science Education Standards and Benchmarks for Science Literacy |
