Modern science curricula and standards no longer require-or even refer to-animal dissection. Kind teachers know that animals are not ours to use for science and that classroom dissection is indefensible. Now is the time to stop dissecting animals. MCGRAW HILL VIRTUAL LAB FROG DISSECTION HOW TOTalk about a horror film come to life! The halls are filled with the smell of formaldehyde, and kids are understandably upset-and really, what are they learning beyond how to mutilate an animal killed for dissection who wanted to live? Is this not the 21 st century? We can and must do better-for animals and students. You can try out the demo here and the App.We can’t believe we have to say this, but some teachers still buy dead animals in pails or bags filled with chemicals, use pins to splay them on a tray, and-get this-ask impressionable and naturally compassionate students to cut them apart. MCGRAW HILL VIRTUAL LAB FROG DISSECTION FREEHowever, Froguts isn't free for homeschoolers. We've heard a number of people recommend Froguts as the most precise (at times, tedious and annoying). Students receive comprehensive explanations and analysis of the following systems:Ī very precise and realistic dissection tool?įor the kinesthetic and hands-on learners that won't appreciate the McGraw-Hill interface, there are more challenging and precise tools available. No need to worry about mistakes! Although the explanations are solid, the interactive features are definitely lacking. This process can be repeated multiple times. There are interactive features that teach students how to make the actual incisions. Students will see a mix of real video footage and images. I like that you can break the steps up over multiple days. This is a step-by-step narrated audio and video program. If you know, or use, another tool we missed, please comment below and we'll add it! Virtual Lab from McGraw-Hill Here is a list of some great online tools for virtual frog dissection. Some are incredibly realistic while others come with built-in quizzes. No mess, no smells, no "gross," frog dissection labs.Įach tool will have strengths and weaknesses. Mistakes in online labs can be "redone." No second guessing which organ is what. How can an online program provide a better learning environment than a hands-on lab?ĭigital images are often higher quality. There is also the question, " Is it humane?" This question is especially pertinent now that there are comparable alternatives.Īrguably, there are online/digital programs and tools that provide an even better environment and educational experience. But there are many reasons why schools and homeschools have stopped performing the "classic" frog dissection. Some educators might disagree with me, saying that queasiness isn't an excuse for skipping a hands-on dissection lab. And then I started exploring digital options for my youngest who has a "sensitive stomach" when it comes to hard science. However, after my oldest completed an online conceptual physics lab, I realized that technology has far surpassed my expectations. Back in "my day" there was no such thing as "virtual labs," much less "virtual dissections." Like it or not, grossed out or engaged, we all had to suffer through the process (and smells, ugh!).
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Face lovingly hand-animated monsters and enjoy the great taste of beautiful, individually rendered items on top of a sea of gorgeous, potent tile-work. And even more things, when improving the game using at least one of the expansion packs.Randomly generated dungeons entice you with the sweet, sweet promises of treasure and … things.No longer must you press CTRL-ALT-SHIFT-x to drink a potion. Classic Roguelike gameplay with the sweet, refreshing taste of point-and-click interfaces.In hideous, screaming pain that makes you throw your keyboard out the window. Wield shoes decorated by the Dwarven Glittersmiths, all of whom have now committed suicide because of their shame, and embrace the joys of destroying giant moustache-wielding brick demons with a mace decorated with tawdry, delicious bacon. Cast powerful magic learned from the dark business warlocks of the school of Necronomiconomics, or summon the Viking Runes of your ancestors to blast your foes with thunder and lightning! 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The table and amalgam barrel can be utilized in cleaning the concentrates from the riffles, but the coarse gangue should be removed by screening prior to tabling.Ī separate water pump is required for furnishing the water to the plant. If this procedure is used, the black sands should be removed by the table so as to not be recirculated and ultimately build up to an excessive extent in the concentration units. This product can be discarded as waste, or recirculated to the initial feed box preceding the trommel and used for wash water. The water overflowing the dewatering classifier together with the water and rejected sands from the cleaning table all flow into a 2″ Vertical Sand Pump. If any valuable minerals are contained in the black sand, the table can be used to produce a separate black sand concentrate for direct marketing or further beneficiation. The quantity of jig concentrate is reduced by the table and is ideal for charging to the Amalgam Barrel. The Mineral Jig concentrates are discharged to a 12″ Dewatering Screw Classifier and then fed to the number 12-S Wilfley Concentrating Table for cleaning. The sluices are lined with cocoa matting. The riffles used in the three stages of sluice boxes are of the Hungarian type. This product is usually impounded to prevent stream polution. The tailing from the jig passes through a tertiary sluice box and then to waste. The ¼-inch undersize from the trommel screen passes over the secondary riffles and then to a 24″ x 36″ Duplex Mineral Jig. This gives maximum disposal in any given location. #Gravity circuit tsw portableThe trommel oversize discharges to a portable conveyor which can be pivoted in a 90° arc. The scrubbing section of the trommel screen provides intense washing of the gravels to disintegrate all clay prior to screening and rejection of the oversize gravels. The primary riffles act essentially as a nugget trap to prevent loss of occasional pieces of gold that might be larger than the ¼-inch opening on the trommel screen. This unit could also be adapted to a pontoon-type floating boat.Īs the gravels are discharged to the feed box, water is added and the gravels flow over primary riffles to the washing and scrubbing trommel screen. It is designed to mount on a structural steel frame equipped with crawler type forged tracks for moving from one location to another. This is a compact unit (about 15′ x 30′) utilizing the washing and concentrating equipment shown on the flowsheet. The feed hopper and conveyor are of portable design for moving as the mining progresses. The gravels are transported to the washing and concentrating plant by means of a belt conveyor. Large boulders are rejected by a heavy 8″ grizzly located on top of the feed hopper. In this study, however, the deposit is mined using a dragline which dumps directly into the feed hopper. The method of mining or excavating will depend on the local conditions such as thickness of gold-bearing gravels, amount of overburden, quantities of large boulders, water table, topography, etc. The above flowsheet was developed to meet the foregoing requirements and has a capacity of approximately 50 cubic yards of bank-run gravel per hour. Extracting Gold from Placer Deposits The Placer Deposit Gold Recovery Process Flowsheet A second consideration is the necessity of providing a means for discarding the tailings. This is an important consideration because the washing and recovery plant should be close to the mining area at all times to minimize the distance that the gravels must be transported. In addition to providing efficient washing and recovery methods, the placer plant should be constructed as a compact unit that can be readily moved. The handling of large quantities of gold-bearing gravels is of utmost importance for most successful placer operations. #DMCA PROTECTED MEANING REGISTRATION#In addition to being mandatory before filing a copyright infringement lawsuit, a copyright registration provides the following advantages: A copyright registration application is relatively inexpensive and affords numerous benefits. While copyright protection extends as soon as the jewelry is created, to file a lawsuit and to receive statutory damages awards and attorney’s fees, you must have a copyright registration certificate. To qualify for copyright protection, the jewelry design must be original, meaning independently created by the designer and not copied from another’s design, and the level of creativity required to qualify for protection is minimal. The manufacturer’s name should be searched at the US Copyright Office to find a list of copyright registrations that may cover the jewelry designs.īecause jewelry designs are protected by copyright law, jewelers and designers need to protect their valuable creations to prevent copying and knockoffs. To reduce the risk of copyright infringement, jewelers and jewelry designers should conduct reverse image searches on designs used for inspiration. Heidi Klum was sued for copyright infringement by Van Cleef & Arpels for allegedly copying the Alhambra jewelry design, Drake was accused of copying a diamond adorned owl pendant given to him by a jeweler, and Nasty Gal’s jewelry designs are accused of infringing Pamela Love’s copyrights. Just ask Drake, Heidi Klum, and Nasty Gal who were all sued for copyright infringement by jewelry designers! Copyright law protects jewelry designs and copyright registrations are used to takedown infringing jewelry from Amazon and other platforms. |
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