10 Best
Stem Machines
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Product Highlights
- Each segment of track teaches a different lesson in mechanical physics, exploring topics such as simple machines, force, motion, momentum, gravity, newton's laws, energy transfer, and more.
- Build your own gumball machine with this science kit that's part marble run, part roller coaster, part pinball machine!
- Track segments are modular and can be easily moved around to create an almost limitless number of different gumball machines.
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Product Highlights
- Durable, modular construction system is compatible with building pieces in other construction, physics, and engineering kits from thames & kosmos
- Through 26 model-building exercise, gain hands-on experience with gears and all six classic simple machines: wheels and axles, levers, pulleys, inclined planes, screws, and wedges
- Learn how simple machines are all around us (the flagpole at school, the wheelbarrow in your backyard, the seesaw at the playground!) and how they're used to make complex tasks easier to do
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Product Highlights
- Ultimate smart polishing: this ingenious stone tumbler automatically adjusts speed according to the barrel load. this ensures optimal efficiency at all times, and with the added memory function that resumes gemstone polishing work after power outages, you can expect high-quality stone polishing results every time!
- User-friendly design: the newly upgraded hobby rock tumbler barrel lid is easy to twist without getting hurt, and the whole operation is highly sealed without worrying about water leakage. the barrel base's groove handle helps you hold the machine easily. the anti-skid pads on the bottom four corners ensure stable operation without shifting.
- Beltless grinding: indulge in a luxurious stone polishing experience with the patented dual-axis motor of the vevor rock tumbler kit! its 60db low noise and overload protection promise long-lasting rock polishing performance while relieving you from the wear and tear of tumbler belts and bringing you endless fun.
- 10 kinds gemstones: bring your creative vision to life with 10 stunning rare gemstones included in the kit. with ample polishing grits and jewelry fasteners that can be added at any grinding stage, you can turn everyday rocks into dazzling gems. the possibilities are endless!
- Fun for parent-child interaction: strengthen your bond with your child through this engaging and educational rock grinder toy that's fun for all ages. comes with an easy-to-follow manual, 4-speed gears, and a 9-day timer, making it ideal for novice stone crafters and gem collectors alike. don't wait - get your rotary rock tumbler today and discover the joy of stone craf...
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Product Highlights
- Interactive: a great birthday or holiday gift best fit for a boy or girl ages 4, 5, 6, 7, 8 +
- Great size: 10" h x 8" w x 6" d boy or girl ages 4 years old (or older) will love this money counter
- Electronic piggy bank atm machine: talks, calculates, and totals your real account balance for kids
- Includes: bank card, coin slot, lights, manual bill feeder, and combination safe. so cool!
- Works with usa and canadian money
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Product Highlights
- Develop: critical thinking, cause and effect and problem solving skills
- Set includes lever board, wedge, pulley with rope and hook, cart with removable wheels, archimedes screw, 4 barrel weights, 10 double-sided activity cards, and comprehensive activity guide with reproducible materials
- Discover engineering wonders through scientific exploration with engaging tools and hands-on activities! a great way to introduce young children to science, technology, engineering, and math
- Explore 6 simple machines and how they make lives easier with hands-on activities designed to teach kids how to solve real-world problems
- Ages 5+
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Product Highlights
- Experiment with three different types of claws (pincher, scoop, and three-pronged) to pick up lollipops and decoy candy boxes (both included!).
- No batteries or electricity required; it uses only the power of your hand and the mechanical advantage of the machines built into the device.
- For ages 8+ with help; 12+ "i got this!"
- Important: download and read the instruction before use. we recommend using the step-by-step assembly and troubleshooting videos available online.
- The toy association's 2022 steam toy of the year finalist!
- Build & engineer your own arcade-style claw machine!.ideal for ages:6 years and up
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Product Highlights
- Tens pads with upgrade gel. the low impedance solid gel has been upgraded to the industry leading adhesive, which can provide much better self-stick performance and easy clean up after maximum 45 uses for longer lifespan. you may also find it quite easy to find compatible electrodes (2mm pigtail tens unit pads) on the market for you to choose from.
- Rechargeable lithium battery. no worries about treatment interruption for dead aa batteries any more! it can give you continuous use up to 10 hours! the power indicator would keep you aware of the remaining battery life (turn on the unit firstly, then recharge it with the wall charger; fully-recharged in 1 hour)
- Professional tens machine. the auvon electric massager can excite / stimulate the sensory nerves and muscles, activate specific natural pain gate mechanism, relax your body and have pain management anytime you feel the need with our medical grade tens electrotherapy pulse massager and accessories.
- Upgrade 24 choices for pain relief. auvon electronic tens device has as many as 24 user-friendly pre-promgrammed massage modes and adjustable timing, making it much easier to use than other traditional electric therapy products which may need you to set the pulse frequency and duration of each pulse manually. (the 24 sub-mode choices selection is under the 6 massage mod...
- What you receive:1 x auvon tens muscle relaxer, 8 x square electrode pads, 2 x lead wires (1/2 wire), 1 x pads holder, 1 x usb cable, 1 x pouch, 1 x professional user manual, our 12-month warranty, and friendly customer service
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Product Highlights
- Up to 20 modes. pre-set modes offer you hammering, kneading, shiatsu and more choices to help relieve pain associated with aching and fatigue muscles in the shoulder, low back, knee from exercise, normal household or work activities.
- Industry-leading tens pads. the included electrode pads can provide excellent self-stick performance for up to 45 uses. the shaped 2" tens electrodes are recommended for more compact pain areas like the knees or elbows. meanwhile, the bigger 2"x4" reusable patches are perfect for larger areas such as the back for tens pain relief.
- Pain relief machine. the rechargeable electric muscle massager can stimulate the sensory nerves and muscles, activate specific natural pain gate mechanism, relax your body and have pain management anytime you feel the need.
- Independent mode control. you can set separate modes and intensities for channel a and channel b. for example, you could choose acupuncture mode in channel a with an intensity level of 5 for your shoulder. while in channel b, the tapping mode is being run with the intensity set to level 12 on your lower back as a back electric stimulator.
- What you receive: 1 x dual channel tens machine, 4 x 2" square electrode pads, 4 x large rectangle 2"x4" pads, 2 x lead wires, 1 x usb cable, 1 x usb charger,1 x user manual, 1 x pad holder, 1 x pouch, our 12-month warranty and friendly customer service. (4pcs 2x2 pads are in a pack while 2pcs 2x4 pads are in a pack. please open the sealed bag firstly and unfold each pa...
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Product Highlights
- Builds 8 fully-functioning replicas of real-world machines, one at a time
- Building instructions and comprehensive teacher's guide cd included
- Adheres to many common core standards, found below
- Great for learning
- Introduces students to the scientific concepts associated with levers and pulleys
- Includes 178 k'nex pieces packaged in a strong storage tub with snap-on lid
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