Sntieecr 276PCS DC Motor Kit, Mini Electric Circuit Kit for DIY Science Projects with Motors, LED Light, Vanes Propeller, AA Battery Holder, Plastic Gears, Gift for Kids

Perfect, engaging Christmas gift. Great quality and is exactly as it was described.

So far very pleased especially in variety of gears & pulleys... Worm gear, Right angle combos, 2x2mm shafts, I've checked 1 of each major item and a couple of quick combos of gears etc all in good working order. With a little imagination and some work anyone could build no end of projects. Incandescent bulbs are 2.5 volt 0.3 amp =0.75 watts... Works fine with 2xAAs Updates later possibly...happying experimenting\inventing etc...

None of the bulbs worked, nor the fan. But the noise maker and the clock both worked! Maybe the fan didn't work bc it required more voltage, and if so it would've been nice if they included a lower powered fan. That would've been fun for my boy to watch. It was a great experiment though! Easy to assemble and use. I would've liked more wires to test more potatoes, but this kit was sufficient enough!

Me and 5 year old grandson had fun with this kid. Not the best quality but everything worked and the price was good.

This is one of nine different sets of electrical educational kits that are sold as different "styles" with reviews that are apparently grouped together as if they were all the same product. I am writing only about the set of 6 motors, motor mounts and propellers. Very little power is required. A single 1.5 V L44 button cell was sufficient to power a motor with an attached propeller. The propeller/fan blade takes some force to push onto the shaft and stays securely on. Attaching the positive terminal of the battery to the read lead and negative to black, results is CCW rotation and proper fan airflow from the motor through the propeller. If the leads of two motors are connected red to black, a strong puf of air by mouth will cause the propeller receiving the air to turn the attached shaft thus generating enough electrical power to turn the other mootor. If the leads of a motor are connected to an LED with no series resistor, black to anode (plus) and red to cathode (minus) a strong puff of air by mouth will cause the motor to generate sufficient poower to briefly light the LED. A small 2x2 inch solar cell illuminated by a 1500 lumen bulb held very close to the cell was able to operate a motor - propeller combination. I can not locate the solar cell specifications. It is not from this seller. All combinations of driving propeller and driven propellers styles (4 blade & 3 blade) resulted in sufficient power to light an LED from the power generated by the driven propeller motor/generator combination. The driving motors were powered by 12 volts. Unfortunately operating the motors at 12 volts resulted in two destroyed motors even though the sellers information seems to indicate that is an acceptable voltage. This motor and propeller kit is a good way to demonstrate several aspects of electric energy generation and use.

My son used it for his science project on windmills, all accessories came in handy for the project.

A little smaller than I expected but seems to be adequate quality for demonstration purposes. The round magnets are very strong. The little cars are pretty flimsy but still adequate for demonstration.

We were hoping for a fun science project for the kids but these materials were flimsy and cheap.

Kit divertente e ben fatto

would have rathered it be in a bettr quality - the iron case broke on day 2 and the magnet looks cheap - served its purpose of education

Es un kit de imanes muy completo, con distintos imanes (de distintas formas). Además de los imanes artificiales, contiene una pequeña cajita con polvo de magnetita, el mineral a partir del cual se fabrican los imanes. Lo que me gusta es que todos los imanes tienen el polo positivo y negativo pintado para poder diferenciarlos.

We absolutely loved this kit. My son has really enjoyed creating with it. Perfect for STEM

Neat little set, does the job and more. Different shapes of magnets, the compass is quite nice and effective too. The shavings/filings could be better, but aren't too bad. You can teach your kids a lot about magnetism with this kit. Poles, magnetic field, how magnetism may work through various surfaces, how the earth is a giant magnet etc. If accompanied with the right book on magnetism, this is enough for understanding the basics.